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topic: Ocean Crisis
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As plastic talks wrap up in Canada, fishers in Indonesia count the costs
- Fishers in the Thousand Islands archipelago off the Jakarta coast have reported extensive economic losses due to the scale of plastic waste littering their seas.
- Declining catch volume and costly repairs to boat engines are cited as drags on productivity, with one fisher telling Mongabay that his family now earns less than a decade earlier.
- Negotiators convened by the U.N. hope to conclude an international agreement in November that would limit the hundreds of millions of tons of plastic produced around the world each year.
‘Our life support system is at risk’: Interview with ‘Her Deepness’ Sylvia Earle
- At the 9th Our Ocean Conference in Athens, Mongabay’s Elizabeth Claire Alberts interviewed oceanographer and marine biologist Sylvia Earle about the pressures facing our oceans, actions needed to turn things around, and how to find hope for the future.
- Earle has been a trailblazer in her career as a scientist, with more than 225 publications to her name, leading more than 100 expeditions, and breaking records as the first woman to venture into the deep ocean in a submersible and also to perform the deepest untethered sea walk.
- She’s currently president and chair of the NGO Mission Blue and an explorer-in-residence at the National Geographic Society.
- Now in her late 80s, she still spends most of her time traveling the world to inspire action to protect the ocean.
No answers for Ghanaian fishery observer’s family months after suspected death
- Samuel Abayateye, a 38-year-old father of two, was working as a fisheries observer when he was reported missing from his assigned vessel in October 2023.
- After a body missing its head, forearms and feet that Abayateye’s family says closely resembled him washed ashore in December, the Ghana Police Service opened an investigation.
- Five months later, Abayateye’s family said they still haven’t received any information from the authorities investigating the case, or the results of a DNA test to confirm the identity of the body.
- A fisheries observer told Mongabay the case has sown fear among observers appointed to monitor and report on illegal fishing in fleets operating in Ghana. Fishing industry experts say the case highlights the dangers faced by observers, whose job is critical to ensuring fishing vessels comply with the law.
Fewer fish and more rules lead to illegal catches, Italian fishers say
- The line between legal and illegal fishing in the waters off Italy’s Calabria region is often blurred, with fishers blaming stringent top-down regulations for constricting their traditional practices.
- The issue is further muddied by the presence here of the ‘ndrangheta or Calabrian mafia, which investigations have shown is involved in the fish trade and also uses it as cover for illicit activities such as drug smuggling.
- The Mediterranean Sea is experiencing a decline in fish stocks, ranging from 60-90% depending on the species, with the NGO Sea Shepherd Italia blaming illegal fishing for environmental damage.
Fishing by dodgy fleets hurts economies, jobs in developing countries: Report
- A recent report gauged the economic damage done by fishing fleets with shady track records in five vulnerable countries: Ecuador, Ghana, Peru, the Philippines, and Senegal.
- It found that these fleets’ activities could be costing the five countries 0.26% of their combined GDP, leaving some 30,000 people jobless and pushing around 142,000 deeper into poverty.
- “The report emphasizes that the uncontrolled growth in global fishing has led to overfishing, stressing fish stocks and impacting communities and the oceans’ well-being,” one of the authors told Mongabay.
No protection from bottom trawling for seamount chain in northern Pacific
- A recent meeting of the intergovernmental body that manages fisheries in the North Pacific Ocean failed to confer new protections for the Emperor Seamount Chain, a massive and richly biodiverse set of underwater mountains south of the Aleutian Islands.
- Bottom trawlers plied the Emperors aggressively in the past, decimating deep-sea coral communities and fish stocks.
- A proposal by the U.S. and Canadian delegations at the meeting of the North Pacific Fisheries Commission (NPFC) would have temporarily paused the limited trawling that continues there today, but failed to reach a vote.
- The NPFC did pass a separate proposal to regulate fishing of the Pacific saury (Cololabis saira), a severely depleted silvery fish that Japanese people traditionally eat in the fall.
Annual ocean conference raises $11.3b in pledges for marine conservation
- The 9th Our Ocean Conference (OOC) took place in Athens from April 15-17.
- Government, NGO and philanthropic delegates made 469 new commitments worth more than $11.3 billion to help protect the oceans, which was lower than in previous years.
- While some conference hosts and attendees celebrated the many successes of the OOC, there was also a shared concern that decision-makers aren’t moving fast enough to secure a sustainable future for the global ocean.
Panama delays promised relocation of sinking island community
- The government of Panama continues to delay the process of relocating almost 1,300 Indigenous Guna inhabitants from an island experiencing rising sea levels due to climate change.
- The lack of space on the tiny Caribbean island of Gardi Sugdub means there’s no room to relocate, and a new site on the mainland for the community has been in the works since 2019.
- But plans for the relocation have been repeatedly delayed due to administrative issues, previous COVID-19 restrictions and poor budgeting, leaving residents skeptical that government promises will be upheld.
- Members of this fishing community have also expressed concern about the relocation site, which is a 30-minute walk from the coast, and about the design of the new homes, for which the government didn’t seek Guna input.
Caribbean startups are turning excess seaweed into an agroecology solution
- Sargassum, a type of brown macroalgae, has been inundating beaches across the Caribbean since 2011. It comes from the Sargasso Sea in the Atlantic Ocean.
- The seaweed has harmed Caribbean economies and human health, making it a national emergency in some island-nations.
- Over the past decade, entrepreneurs and scientists have found ways to turn sargassum into nutrient-rich biofertilizers, biostimulants and other organic products to boost agricultural yields while cutting back on chemicals.
- But there are hurdles to scaling the industry, including sargassum’s inconsistent arrival, heavy metal content and fast decomposition rates.
Global coral bleaching now underway looks set to be largest on record
- Scientists say that coral reefs are currently undergoing a global bleaching event, with more than 54% of the world’s coral reef areas in the territorial waters of over 50 countries experiencing heat stress. According to one scientist, the percentage of areas dealing with bleaching-level heat stress “has been increasing by roughly 1% per week.”
- To assess the current bleaching event, scientists drew on satellite-derived sea surface temperature data and in-water measurements.
- Experts say the current El Niño, a phase in the El Niño–Southern Oscillation (ENSO) climate pattern, in combination with rising global sea temperatures, is responsible for the extensive coral bleaching.
- Mongabay interviewed scientists most familiar with coral reef bleaching data, and experts attending the 9th Our Ocean Conference in Athens, taking place from April 15-17.
Deep-sea mining’s future still murky as negotiations end on mixed note
- Between March 18 and 29, members of the International Seabed Authority (ISA), the U.N.-affiliated regulator of deep-sea mining activities in international waters, met for talks in Kingston, Jamaica.
- One focus of discussion was the ongoing revision of the regulations governing exploitation, which are still in draft form, but which member states are aiming to finalize by July 2025. Seabed mining activities could begin before then, as early as next year.
- ISA officials said “good progress” was made on the regulations. However, one NGO observer pointed out that there were “many areas where these negotiations have not progressed.”
- Delegates to the meetings also didn’t adopt either of two proposals to limit the ability of Greenpeace International to protest deep-sea mining activities at sea.
Japan prepares to mine its deep seabed by decade’s end
- Japan is one among just a handful of nations actively pursuing deep-sea mining within its own waters.
- The country aims to be ready to mine by the late 2020s and could be among the first nations to exploit the deep sea.
- The country has completed multiple small-scale mining tests that it claims are world firsts, and it positions itself as a global leader in the “sustainable development” of deep-sea mining.
- However, concerns about the environmental impacts of deep-sea mining have prompted widespread opposition to the practice, and one critic notes that Japan’s momentum may be too great to stop for any warning signs its research might raise.
Communities worry anew as PNG revives seabed mining plans
- Coastal communities in Papua New Guinea’s New Ireland province rely on the sea for their livelihoods and culture.
- But Solwara 1, a resurgent deep-sea mining project aimed at sourcing metals from the ocean floor, could threaten their way of life, community leaders and activists say.
- They also say they haven’t been properly consulted about the potential pros and cons of Solwara 1, and government and company leaders have provided little information to the public about their plans.
- A coalition of leaders, activists and faith-based organizations called the Alliance of Solwara Warriors is opposing the project in Papua New Guinea and abroad, and calling for a permanent ban on seabed mining in the country’s waters.
Huge new no-fishing zones give Antarctic marine predators and their prey a break
- The government of the South Georgia and South Sandwich Islands (SGSSI), which operates as a British overseas territory, recently announced that it had established new no-fishing zones over 166,000 km² (64,100 mi²) of its existing marine protected area, and prohibited krill fishing in an additional 17,000 km² (6,600 mi²) of the MPA.
- These new no-fishing zones were established to protect krill-dependent marine wildlife, including baleen whales and penguins, while also considering the fisheries operating in the area, which target krill and other species.
- While conservationists initially pushed for further protections, they ultimately accepted the decision, with one calling it a “positive and good outcome.”
- However, Argentina, which claims the South Georgia and South Sandwich Islands as part of its Tierra del Fuego province, has expressed its dissatisfaction with the SGSSI government’s decision.
Fears of marine disaster loom after fertilizer-laden ship sinks in Red Sea
- The MV Rubymar, a cargo ship carrying about 21,000 metric tons of ammonium phosphate sulfate fertilizer, has sunk in the Red Sea following an attack by Yemen’s Houthi rebels, raising fears of an environmental disaster.
- In addition to the fertilizer potentially entering the ocean, the vessel is also leaking heavy fuel, which experts say will impact the marine environment.
- The Red Sea is known to harbor some of the world’s most heat-resistant coral reefs, which makes the sinking of the Rubymar particularly concerning.
‘Corals dying’ as yet more bleaching hits heat-stressed Great Barrier Reef
- Both aerial and in-water surveys have shown that the southern section of the Great Barrier Reef is undergoing extensive coral bleaching.
- Surveys have also shown “limited bleaching” in the northern part of the Great Barrier Reef.
- However, scientists and reef managers plan to conduct more air and in-water surveys to further assess the coral bleaching across all parts of the Great Barrier Reef.
- Scientists suspect but have not yet confirmed that a seventh mass bleaching event since 1998 is currently underway; the last mass bleaching event on the Great Barrier Reef happened in 2022.
PNG communities resist seabed mining: Interview with activist Jonathan Mesulam
- The government of Papua New Guinea appears poised to approve Solwara 1, a long-in-development deep-sea mining project in the country’s waters.
- However, PNG has signed onto several seabed mining moratoria, and scientists have urged caution until more research can determine what the effects of this practice will be.
- Proponents say the seafloor holds a wealth of minerals needed for batteries, especially for electric vehicles, and thus are vital for the transition away from fossil fuels.
- But coastal communities in PNG’s New Ireland province have mounted a fierce resistance to Solwara 1, arguing that it could damage or destroy the ecosystems that provide them with food and are the foundation of their cultures.
Summit on migratory species sides with science, throws shade on deep-sea mining
- Representatives from 133 member states of the Convention on the Conservation of Migratory Species of Wild Animals (CMS) met in Samarkand, Uzbekistan, from Feb. 12-17 to discuss measures to protect migratory species on a global scale.
- Many decisions at the meeting, known as COP14, focused on the protection of marine species, including the listing of several species in the convention’s appendices, a draft decision on vessel strikes, and an updated resolution on climate change that urges parties to take measures to protect species from future threats.
- The convention also adopted a resolution urging parties not to engage with or support deep-sea mining until more scientific evidence is acquired. This resolution garnered criticism from the secretary-general of the International Seabed Authority (ISA), the U.N.-mandated body that governs deep-sea mining in international waters.
- While attendees say COP14 had many successes, some experts say that more action and resources are required to keeping species from sliding toward extinction.
Annual South Pacific fisheries meeting nets bottom trawling controversy
- The annual conference of the South Pacific Regional Fisheries Management Organisation (SPRFMO), an intergovernmental body, took place in Manta, Ecuador, between Jan. 29 and Feb. 2.
- SPRFMO, which manages fisheries across the vast international waters of the South Pacific Ocean, made key decisions on bottom trawling, labor rights, observation of squid-fishing vessels and transshipment at sea, a practice that can obscure the origin of illegally caught seafood.
- In what was perhaps the most controversial outcome of the meeting, delegates failed to adopt a proposal to complete the implementation of rules passed last year that would have limited bottom trawling of vulnerable marine ecosystems, such as coral communities.
EU parliament expresses disapproval of Norway’s deep-sea mining plans
- On Feb. 7, members of the European Parliament voted in favor of a resolution that raises concerns about Norway’s intentions to begin deep-sea mining activities.
- Although the resolution doesn’t hold any legal power, experts say it sends a strong signal to Norway that it doesn’t have the European support it may be relying on.
- Norway’s foreign ministry said that it has taken note of the resolution, adding that, like its European partners, it is committed to “sustainable ocean management.”
- In January, Norway voted to allow deep-sea mining exploration to commence in its waters.
From exporting coral to restoring reefs, a Madagascar startup rethinks business
- After her father died, Jeimila Donty took over her family’s coral export business and shifted its focus to conservation, creating Koraï.
- Donty is part of a young “pro-climate” generation that’s keen to incorporate the environment into business models.
- Koraï plants corals in Madagascan waters on behalf of other companies as part of their corporate social responsibility (CSR) commitments.
- The business is ambitious and faces challenges, such as recruiting workers and a lack of political support.
Pakistan bucks global trend with 30-year mangrove expansion
- Around the world, mangrove forests have undergone a decades-long decline that is just now slowing to a halt.
- In Pakistan, by contrast, mangroves expanded nearly threefold between 1986 and 2020, according to a 2022 analysis of satellite data.
- Experts attribute this success to massive mangrove planting and conservation, as well as concerted community engagement.
- Many in Pakistan are looking to mangroves to bolster precious fish stocks and defend against the mounting effects of climate change — even as threats to mangroves, such as wood harvesting and camel grazing, continue with no end in sight.
Critics push for more transparency at RFMOs that govern high seas fishing
- Around 17 regional fisheries management organizations (RFMOs) manage fishing in international waters, or the “high seas.”
- Scientists and civil society members have long criticized these international bodies for failing the high seas; many of the stocks they manage are overfished, research shows.
- Critics cite opaque decision-making as a key reason for conservation failures, and they’re making an increasingly vociferous case for RFMOs to become more transparent, citing their oversight of shared public resources.
- RFMO representatives, while citing internal rules as well as a need for privacy to maintain open negotiations among parties, point to recent steps toward transparency.
Ocean heating breaks record, again, with disastrous outcomes for the planet
- New research shows that ocean temperatures are hotter than ever in the modern era due to human-driven global warming.
- High ocean temperatures are placing a strain on marine life and biological processes while also increasing extreme weather events on land.
- The world is also seeing an escalation in the frequency and intensity of marine heat waves, events in which sea temperatures exceed a certain threshold for five days or more.
Palau is the first nation to ratify treaty to protect high seas
- Palau has become the first nation to ratify the high seas treaty, which seeks to protect and manage ocean areas beyond national jurisdiction.
- At least two other nations, Chile and the Maldives, appear to be on the cusp of ratifying the treaty.
- A total of 60 nations must ratify the treaty for it to take effect.
How much carbon does ocean trawling put into the atmosphere?
- New research suggests that bottom trawling stirs up large amounts of carbon from the seabed and releases 55-60% of this carbon into the atmosphere within nine years.
- This amount of carbon is nearly double the annual emissions from the combustion of fuel by the entire global fishing fleet of about 4 million vessels, the study suggests.
- The authors say that the remaining 40-45% of the carbon would remain dissolved in the water, contributing to ocean acidification.
- However, this study has drawn criticism for potentially overestimating the amount of seabed carbon that trawling releases.
2023’s top ocean news stories (commentary)
- Marine scientists from six international research and conservation institutions share their list of the top ocean news stories from 2023.
- Hopeful developments this past year include a monumental global treaty to protect biodiversity on the high seas and the regulation of international trade in 97 species of sharks and rays under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
- At the same time, 2023 was the hottest year on record, with widespread bleaching of corals in the Caribbean and Great Barrier Reef, and many more hot years forecast as humanity’s emissions of greenhouse gases that cause global warming continue.
- This post is a commentary. The views expressed are those of the authors, not necessarily Mongabay.
‘Really a sad day’ as Norway votes to allow deep-sea mining in Arctic waters
- Norway’s parliament has voted to allow deep-sea mining to commence in the Norwegian Sea, a move that has garnered criticism from scientists and environmentalists.
- While the Norwegian government insists that it can conduct deep-sea mining in a sustainable way, critics say these activities will put marine ecosystems and biodiversity at risk.
- Norway will open a 281,000-square-kilometer (108,500-square-mile) area of the ocean for deep-sea mining, which mostly falls along its continental shelf.
Fisheries observer turns up dead in latest incident in Ghana waters
- Ghanaian fisheries observer Samuel Abayateye’s decapitated body was discovered floating in a lagoon nearly six weeks after he was reported missing from the fishing vessel he was assigned to.
- Abayateye’s death follows the 2019 disappearance at sea of another fisheries observer, Emmanuel Essien, whose body has still not been found.
- Police and the Ghana Fisheries Commission say they’re investigating Abayateye’s death, but are yet to share details of an autopsy.
- The incident highlights the vulnerability of observers, who are responsible for monitoring fishing crews’ compliance with regulations, according to the Accra-based Centre for Maritime Law and Security Africa.
Photos: Top species discoveries from 2023
- Scientists described a slew of new species this past year, including an electric blue tarantula, two pygmy squid, a silent frog, and some thumb-sized chameleons.
- Experts estimate less than 20% of Earth’s species have been documented by Western science.
- Although a species may be new to science, it may already be well known to local and Indigenous people and have a common name.
- Many new species of plants, fungi, and animals are assessed as Vulnerable or Critically Endangered with extinction as soon as they are found, and many species may go extinct before they are named, experts say.
Farewell, Java stingaree: Scientist declare the first marine fish extinction
- In December 2023, scientists declared the Java stingaree (Urolophus javanicus), a species of stingray, extinct.
- It’s the first marine fish confirmed to have gone extinct due to human actions.
- Scientists know very little about the species, which they haven’t spotted since a naturalist purchased the specimen from which he described the species at a fish market in Jakarta in 1862.
U.S. auctions off endangered whale habitat for oil and gas drilling
- On Dec. 20, the U.S. Department of the Interior’s Bureau of Ocean Energy Management (BOEM) held a lease sale to auction off oil and gas drilling rights in the Gulf of Mexico.
- Environmental groups and the U.S. Interior Department had tried to postpone this sale due to concerns about protecting the critically endangered Rice’s whale, a species whose key habitat overlaps with the lease sale areas.
- Scientists estimate there are fewer than 50 Rice’s whales left, and that the primary threat to the species is the oil and gas industry.
- While the lease sale went through without any protections for the Rice’s whale, environmental groups continue to explore legal and political avenues to ensure the species’ survival.
Vast new MPAs are PNG’s first to be co-managed by Indigenous communities
- On Nov. 12, the government of Papua New Guinea declared two large new marine protected areas totaling more than 16,000 square kilometers (6,200 square miles) that reportedly triple the country’s marine area under protection.
- The announcement capped a six-year effort led by U.S.-based NGO Wildlife Conservation Society to consult with local communities about how to set up the MPAs to curtail the harvest of threatened species and restore the health of fisheries that people have depended on for generations.
- The NGO called the announcement “one of the first and most ambitious community-led MPA wins” since countries agreed last year to protect 30% of land and sea area by 2030 under the U.N. Convention on Biological Diversity.
- However, some observers note the potential problems that could arise from foreign-led conservation in an area experiencing poverty, conflict, and minimal government support, and there is widespread agreement that the MPAs’ success will depend on securing financing for enforcement.
Did the tides turn for oceans at COP28? Climate summit draws mixed reviews
- The ocean featured in many negotiations around the climate crisis at the U.N. climate summit known as COP28, which took place in Dubai between Nov. 30 and Dec. 13.
- The final version of the global stocktake (GST), which served as the main agreement for COP28, referred to the importance of protecting and preserving the ocean and coastal ecosystems, and called for “ocean-based action.”
- However, experts say the GST does not capture the necessary urgency to curtail fossil fuel emissions and may encourage the launch of controversial and still-untested geoengineering techniques that aim to lock away carbon in the ocean.
- COP28 was also the stage for several large pledges to support the protection of marine and coastal ecosystems.
Philippines oil spill may reverberate long after cleanup declared complete
- On March 1, the MT Princess Empress oil tanker sank in the Philippines, carrying 900,000 liters (237,754 gallons) of industrial fuel oil. A huge oil slick polluted local waters and prompted authorities to impose a ban on fishing that sent local communities into a tailspin.
- The wreck occurred in the Verde Island Passage, between the Philippines’ main islands of Luzon and Mindoro, an area with the highest concentration of marine biodiversity in the world.
- The spill cleanup activities are now finished, and life is returning to normal in many places. However, experts say the effects of the oil spill on the ecosystem could linger over the long term.
- The spill has reinvigorated calls for the Philippine Legislature to pass a law declaring the entire Verde Island Passage a marine protected area.
Jamaica battles relentless plastic pollution in quest to restore mangroves
- In recent decades, mangroves in Jamaica have declined rapidly, from about 15,000 hectares (37,000 acres) in the 1970s to about 9,945 hectares (24,574 acres) now.
- Currently there are several efforts to restore mangroves in the island country, as experts recognize the many ecosystem services they provide, including the protection and stabilization of coastlines as human-induced climate change worsens.
- However, restoration efforts face numerous challenges: Near Kingston, the main one is voluminous tides of plastic waste, which can stunt mangrove growth or kill them.
Is ocean iron fertilization back from the dead as a CO₂ removal tool?
- After a hiatus of more than 10 years, a new round of research into ocean iron fertilization is set to begin, with scientists saying the controversial geoengineering approach has the potential to remove “gigatons per year” of carbon dioxide from Earth’s atmosphere.
- The idea behind ocean iron fertilization is that dumping iron into parts of the ocean where it’s scarce could spark massive blooms of phytoplankton, which, when they die, can sink to the bottom of the sea, carrying the CO₂ absorbed during photosynthesis to be sequestered in the seabed for decades to millennia.
- So far, proof that this could work as a climate-change solution has remained elusive, while questions abound over its potential ecological impacts.
- Scientists with the Woods Hole Oceanographic Institution in Massachusetts, U.S., recently received $2 million in funding from the U.S. government that will enable computer modeling research that could pave the way for eventual in-ocean testing, effectively reviving research into ocean iron fertilization.
‘Very good progress’ but nothing firm as deep-sea mining rules are hashed out
- Between Oct. 30 and Nov. 8, representatives of the 36 member states of the the International Seabed Authority (ISA) council met in Kingston, Jamaica, to work on a set of regulations that would govern how deep-sea mining activities could proceed.
- Previously, at the ISA meetings that took place in July 2023, delegates agreed to try to finalize the regulations by July 2025.
- However, observers say they believe the regulations are far from being complete, despite continued work on the text.
- The Metals Company (TMC), a Canadian firm that could be the first in the world to begin deep-sea mining, has indicated that it intends to submit an application for exploitation following the July 2024 meeting; if this application is approved, mining could start in the near future without regulations to govern this activity.
Not MPAs but OECMs: Can a new designation help conserve the ocean?
- To meet the landmark commitment struck last year to protect 30% of the ocean by 2030, the world’s nations will have to designate many new and large marine protected areas. But there’s also a different, less familiar option for meeting that target: “other effective area-based conservation measures,” or OECMs, areas that are not necessarily designed to protect biodiversity — they just happen to do so.
- Countries are now working to identify areas that meet the criteria and register them as OECMs, including in Africa where a recent webinar highlighted the promises and pitfalls of this relatively new conservation designation.
- Conservationists say OECMs could bring many positives, including the development, recognition or financing of de facto conservation areas led by local communities or Indigenous peoples.
- However, they also warn of the dangers of “bluewashing” or creating so-called paper OECMs that fail to deliver real conservation benefits in the rush to meet the 2030 deadline.
Amid record melting, countries fail again to protect Antarctic waters
- The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), the intergovernmental body charged with protecting marine life and managing fisheries in the Southern Ocean, met from Oct. 16-27 in Hobart, Australia, with 26 member countries and the European Union participating.
- For the seventh year in a row, the CCAMLR declined to establish new marine protected areas (MPAs) around Antarctica, despite having committed to creating “a representative network of MPAs” in 2009.
- Scientists, conservationists and some governments have been pushing for greater protections, concerned that the melting ice in Antarctica has reached alarming levels, jeopardizing some key populations of penguins, krill, whales, seals and other marine animals.
- The stalemate came even as a new threat to wildlife emerged in the region: the discovery last week that a virulent form of avian flu had reached Antarctic bird colonies.
New Caledonia expands strictly protected coverage of its swath of the Pacific
- New Caledonia, an overseas territory of France in the Pacific, recently announced that it would highly protect 10% of its economic exclusive zone (EEZ).
- These new highly protected areas will be off-limits to industrial activities such as fishing, drilling and mining.
- A decade ago, New Caledonia designated its entire EEZ as a marine protected area, the Natural Park of the Coral Sea, but industrial activities were permitted across 97.6% of that area at the time.
Climate refugees? As the sea warms, corals thrive in Japan’s cool waters
- As tropical and subtropical coral reefs succumb to bleaching due to climate change in many parts of the world, the idea that they could take refuge in cooler, temperate seas has offered cause for hope.
- For a while, this is exactly what researchers thought was happening in Japan, where corals are replacing seaweed as the dominant benthos in many places, shaking up both ecosystems and coastal economies.
- But the latest research has tempered those hopes, showing that it’s mainly Japan’s genetically distinct temperate corals that have been expanding their range and edging out seaweed.
- The long-term implications of this shift are unclear, but researchers say it could take tens of thousands of years for these new high-latitude coral communities to evolve the structures, niches and symbioses necessary to support biodiversity on par with the world’s current tropical reefs.
Record North Atlantic heat sees phytoplankton decline, fish shift to Arctic
- Scientists warn that record-high sea surface temperatures in the North Atlantic Ocean this year are having consequences for sea life.
- As marine heat waves there have worsened over the years, populations of phytoplankton, the base of the oceanic food chain, have declined in the Eastern North Atlantic.
- With experts predicting more heat anomalies to come, North Atlantic fish species are moving northward into the Arctic Ocean in search of cooler waters, creating competition risks with Arctic endemic species and possibly destabilizing the entire marine food web in the region.
- Lengthening and intensifying marine heat waves around the globe are becoming a major concern for scientists, who warn that the world will see even greater disruptions to ocean food chains and vital fisheries, unless fossil fuel burning is curtailed.
As oceans warm, marine heat waves push deep beneath the surface, study shows
- A new study found that the ocean experiences the most intense marine heat waves at a depth of between 50 and 250 meters (160 and 820 feet), where a large portion of the ocean’s biodiversity can be found.
- It also found that parts of the ocean between 250 and 2,000 m (6,600 ft) had less intense but longer marine heat waves, with a duration twice as long as at the surface.
- The intensity and duration of marine heat waves could have widespread effects on marine biodiversity, increasing the likelihood of species displacement and mortality, the study suggests.
Microplastics pose risk to ocean plankton, climate, other key Earth systems
- Trillions of microplastic particles in the ocean threaten marine life, from huge filter-feeders to tiny plankton. Although not lethal in the short term, the long-term impacts of microplastics on plankton and marine microbes could disrupt key Earth systems such as ocean carbon storage and nitrogen cycling.
- Oceans represent Earth’s largest natural carbon store and are crucial to mitigate atmospheric CO2 increase. Carbon taken up by plankton and stored in the deep ocean — known as the biological carbon pump — is a major process in ocean carbon storage. Microplastics may “clog” this pump and slow ocean carbon uptake.
- Microplastics in marine sediments alter microbial communities and disrupt nitrogen cycling, potentially magnifying human-caused problems like toxic algal blooms. Changes in plankton communities at the ocean surface could exacerbate deoxygenation driven by climate change, starving marine organisms of oxygen.
- Small plastic particles are impossible to remove from the oceans with current technology, so stopping pollution is a priority. Plastic production continues to soar year-on-year, but a U.N. treaty to address plastic pollution could offer a glimmer of hope that the international community is ready to take action.
‘Totally unsustainable’ sand mining harms marine environments, new data suggest
- New data from the newly launched platform Marine Sand Watch suggest that the dredging industry is extracting about 6 billion tons of sand from the marine environment annually.
- Experts say the extraction of sand can have numerous impacts on the marine environment, such as harming biodiversity, polluting water and making coastlines more vulnerable to sea level rise.
- While the sand mining industry is currently operating at unsustainable levels, experts say there are solutions to mitigate its damage.
Sensing tech used in oil pipelines can also track Arctic sea ice, study shows
- Scientists have used undersea fiber-optic cables in the Arctic to remotely track the presence and extent of sea ice.
- Sea ice is usually monitored with the help of satellites; however, the lack of high-resolution images and the low frequency of data collection makes it difficult to do in-depth analysis.
- Using a method commonly employed to monitor oil pipelines and highways, the scientists looked for changes in signals sent down a fiber-optic cable in the Beaufort Sea that would indicate the presence of sea ice.
- While promising, the method can’t yet be used to measure the thickness of sea ice or to determine how far the ice extends to either side of the cable.
Pacific alliance adopts moratorium on deep-sea mining, halting resurgent PNG project
- The Melanesian Spearhead Group put in place a moratorium on deep-sea mining within its member countries’ territorial water in a declaration signed Aug. 24.
- Leaders from Fiji, Papua New Guinea, the Solomon Islands, Vanuatu and an alliance of pro-independence political parties known as FLNKS from the French territory of New Caledonia said more research is needed to establish whether mining the seabed below 200 meters (660 feet) is possible without damaging ecosystems and fisheries.
- The moratorium ostensibly thwarts the return of Nautilus Minerals, a Canadian company, to Papua New Guinea and its Solwara 1 project in the Bismarck Sea, where it had hoped to mine gold and copper from sulfide deposits on the seafloor.
- Proponents of deep-sea mining say that minerals found deep beneath the ocean are necessary for the production of batteries used in electric vehicles and thus are critical in the global transition away from fossil fuels.
Hope, but no free pass, as Pacific corals show tolerance to warming oceans
- New research suggests that coral reefs in the Pacific islands of Palau are becoming increasingly tolerant to thermal stress brought on by climate change.
- The study found that Palau’s coral reefs appeared to suffer less bleaching over three successive marine heat waves in 1998, 2010 and 2017.
- While the findings provide some hope for coral reefs, one expert says the study has some limitations in providing a clear picture of how corals respond to different heat events.
- Scientists also say that reducing carbon emissions is essential to safeguard coral reefs — and to secure the planet’s future.
Deep-sea mining project in PNG resurfaces despite community opposition
- An embattled deep-sea mining project appears to be moving ahead in Papua New Guinea, according to officials in the Pacific Island nation, despite more than a decade of opposition from local communities on the grounds that it could harm the fisheries on which they rely as well as the broader ecosystem.
- Backers of deep-sea mining say it could help provide the gold, copper and other minerals necessary for the transition to electric vehicles and away from fossil fuels.
- But deep-sea mining has not yet happened anywhere in the world, and scientists, human rights groups and Indigenous communities highlight the lack of evidence demonstrating its safety.
- The Alliance of Solwara Warriors is a group of Indigenous communities and church organizations that have been fighting the Solwara 1 project in Papua New Guinea, which received the world’s first deep-sea mining license from PNG in 2011.
‘All will be well’: Q&A with Kenyan fisher turned coral gardener Katana Ngala
- Once a fisherman, Katana Ngala has been restoring corals near his home in Kuruwitu, Kenya, for more than 20 years.
- Early on, the area’s coral was degraded due to destructive fishing practices and coral bleaching, and he and other fishermen were experiencing diminished catches.
- Now the coral and fish are flourishing in the area, which the local community set aside as a no-fishing zone.
- Ngala spoke about the changes he’s seen in the coral garden over time and how he shares his commitment to the sea with fishers, students, scientists and the wider community in an interview with Mongabay at his seaside coral workshop.
Kenyan fishers put new twists on an age-old marine conservation system
- Over the past two decades Kenyan fishing communities have been setting up no-fishing zones called tengefus, Swahili for “set aside.”
- The idea was inspired by the fishing habits of their forebears, who prior to colonization established seasonal fishing closures to ensure plentiful harvests.
- Today there are 22 tengefus in various stages of development in the country, some more successful than others.
- Successful tengefus have seen fish populations and coral cover increase, and they’ve established tourism enterprises that fund community initiatives. To work, experts say tengefus need support from communities, donors and the government.
Video: Rio de Janeiro’s defender of mangroves
- Guanabara Bay in Rio de Janeiro has suffered for decades from inefficient sewage treatment, oil spills and mangrove deforestation.
- For more than 30 years, biologist Mario Moscatelli has been fighting to reverse this process and revitalize the landscape.
- For denouncing corruption, environmental crimes and government inaction, he faced intimidation and even death threats.
Prickly babies: A Jamaican nursery aims to restore sea urchins felled by disease
- The long-spined sea urchin (Diadema antillarum) is a key algae grazer in the Caribbean. A disease outbreak in the 1980s killed off most of the urchins, resulting in the overgrowth of many Caribbean coral reefs with algae.
- Last year, a recurrence of the disease hampered the species’ slow recovery. This time, scientists were able to discover the culprit, which they revealed in a recent paper.
- The waters of Jamaica’s Oracabessa Bay Fish Sanctuary remained largely unaffected by the disease. Scientists there collected healthy long-spined sea urchins and started an urchin nursery in hopes of restoring the species on reefs around the island.
- This story was produced with support from the Pulitzer Center.
‘The deep sea is vital to protect the ocean’: Q&A with France’s Hervé Berville
- In November, France took a strong position on deep-sea mining by declaring that this future activity should be banned in international waters. The nation has also banned it from its national waters.
- Berville also said he wants to make sure there is a “coalition in favor of a principle of precaution or moratorium.”
- Member states of the International Seabed Authority, the UN-associated mining regulator, recently agreed to push back its timeline for finalizing rules that would enable deep-sea mining to start.
- Mongabay’s Elizabeth Claire Alberts interviewed Berville at the French Embassy in Kingston, Jamaica, during the meeting of the ISA assembly in July.
Plastic ‘Frankenrocks’ pose new pollution threat to coastal environment
- Scientists are finding more evidence of a new, insidious form of plastic pollution: melted plastic that has melded with rocks, coral and other naturally occurring material in coastal areas.
- Samples of these “Frankenrocks” collected from a single beach on a single island in Indonesia were likely formed by the burning of plastic trash.
- They pose a danger to marine life because they can break down into microplastics that then enter the food chain, and can also leach toxic chemicals into the environment.
- Scientists have called for more study into this new and growing phenomenon, saying these Frankenrocks require specialized cleanup management to ward off a “serious problem.”
The endless struggle to clean up Rio de Janeiro’s highly polluted Guanabara Bay
- Once a nursery for marine life, Guanabara Bay in Rio de Janeiro is now dying from the dumping of thousands of liters of sewage into its waters; artisanal fishers now survive by picking up the garbage that floats in the bay.
- Faced with failed promises of de-pollution by the government, civil society organized itself, creating areas of environmental protection and pressuring the companies responsible for basic sanitation in the state, which is still deficient today.
- On the shores of the Rodrigo de Freitas lagoon, a biologist started replanting the mangroves; life returned and the site has become a model of what can be done to save the Guanabara Bay.
Deep-sea mining meetings conclude after stalemate on key agenda items
- Negotiations by member states of the International Seabed Authority (ISA), a U.N.-associated regulator, broke down at a crucial meeting in Kingston, Jamaica, before delegates reached a partial compromise in the final hours.
- The point of contention was whether to discuss two proposals at the meeting: one to conduct a review of the ISA itself and the other to discuss the possible consequences to the marine environment from a rule on deep-sea mining.
- The previous week, member states of the ISA council, the organization’s policymaking body, agreed to aim for July 2025 to finalize rules, regulations and procedures to govern deep-sea mining.
- Deep-sea mining has not yet begun anywhere in the world, but the potential impacts of this activity have stirred controversy.
‘Mud, muck and death’: Cambodia’s plan to obstruct trawlers and revive local fishing
- On Cambodia’s coast, a local NGO is building concrete underwater structures in an effort to deter destructive illegal trawlers that kill most everything in the habitat.
- The structures also serve as artificial reefs that provide small nurseries for fish, sponges, grasses and other species.
- An ambitious government plan will erect the structures near 25 fishing communities along the country’s coastline in a bid to revive Cambodia’s nearshore marine fisheries, besieged by years of destructive illegal fishing and increasing development.
- If successful, the plan could bring an influx of funding to fishing communities hit hard by the destruction of marine habitats and loss of income that have forced many to leave in search of other work.
Deep-sea mining rules delayed two more years; mining start remains unclear
- Member states of the International Seabed Authority (ISA) are currently meeting in Kingston, Jamaica, to discuss the future of deep-sea mining in international waters.
- These current meetings were highly anticipated because they coincided with the expiration of a rule that could have enabled deep-sea mining to start in the near future.
- On July 21, nations intensely negotiated an agreement to finalize regulations for deep-sea mining by July 2025, although this timeline is not legally binding.
- While companies can now technically apply for mining licenses, experts say the new agreement may make it more difficult for these to be approved before the mining regulations are finalized.
Seaweed farmers in eastern Indonesia struggle in a changing climate
- Seaweed farmers in Indonesia are losing out on revenue from their harvests as a result of erratic weather patterns and warming waters — signs of climate change impacts.
- The warming seas encourage the growth of a bacteria that attacks the commercially valuable Eucheuma cottonii species of seaweed.
- To avoid this, farmers are harvesting their crops earlier, before the seaweed grows to the optimal size, giving them a smaller yield and lower revenue at the market.
- The farmers have devised some workarounds to adapt to the situation, but say these solutions can’t be sustained in the face of a changing climate.
Scientists: Fishing boats compete with whales and penguins for Antarctic krill
- Scientists and campaigners recently documented huge krill fishing vessels plowing through pods of whales feeding in Antarctic waters, a permitted practice they say deprives the whales of food.
- As Antarctic waters warm due to climate change, krill numbers are declining, stressing wildlife that rely on the small crustaceans at the bottom of the food chain.
- The intergovernmental body in charge of regulating the krill fishery, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), has taken specific steps to protect penguins and seals but not whales.
- At the same time, CCAMLR has stalled on the establishment of new marine protected areas and the adoption of new conservation measures. A special meeting to advance protected areas concluded June 23 with no progress.
Clean me a river: Southeast Asia chokes on Mekong plastic pollution
- New research shows that the drift of microplastics from the Mekong River to the coastlines of countries around the South China Sea depends on variable factors, including seasonal changes in winds and ocean currents.
- The Philippines is most exposed to plastic waste that mainly drifts from the Mekong River to the sea during the monsoon season, with 47% of the stranded particles ending up on its coast, followed by Indonesia at 24%, Vietnam at 17%, and Malaysia at 8%.
- Environmental advocates say the findings of this study underscore the importance of international cooperation in combating plastic pollution, which harms marine biodiversity and coastal economies.
Calls grow to put the brakes on deep-sea mining as countries discuss rules
- Deep-sea mining is facing growing opposition from various countries, including Canada, Sweden, Ireland and Switzerland, as well as the U.N. human rights chief and a major seafood industry group.
- On July 10, the International Seabed Authority (ISA), the U.N.-associated deep-sea mining regulator, began a set of highly anticipated meetings in Kingston, Jamaica, to discuss adopting mining regulations.
- Commercial deep-sea mining has not yet begun. One firm previously said it intended to apply for a mining license later this year, adding urgency to the discussions.
- Mining companies say it’s necessary to mine the deep sea to extract minerals for renewable technologies; scientists and other experts say seabed minerals aren’t required for these technologies, and this mining could cause irreparable damage to the marine environment.
Keep it down: U.N. report lists ways to reduce ocean noise pollution
- A new report published by the U.N.’s Convention on the Conservation of Migratory Species of Wild Animals (CMS) outlines possible solutions to human-caused ocean noise that impacts marine life.
- It focuses on three main types of underwater noise: shipping, seismic air gun surveys, and pile driving.
- Lindy Weilgart, the report author, said she believes it’s essential to move toward finding solutions rather than only studying the impacts of human-caused ocean noise.
- An outside expert praised the report but also questioned the likelihood of the suggestions being followed, and argued that the noise impacts of wind turbines have not been fully considered.
New hope in the Mediterranean: Scientists find deep corals withstand heat waves
- Over the past decade, the Mediterranean Sea has experienced frequent, destructive marine heat waves that have impacted a diversity of marine life, including red gorgonians (Paramuricea clavata).
- In 2022, researchers launched “Noah’s Ark of the Deep,” an expedition to study the gorgonians in the western Mediterranean Basin. In April, the second mission of the expedition explored gorgonians below 50 meters (164 feet).
- While the gorgonians in shallow waters suffered as temperatures rose, corals in deeper waters appeared untouched by the impacts of thermal stress.
- Researchers are currently trying to understand if these deeper gorgonians can help repopulate shallow populations if climate conditions allow them to regenerate.
Norway cites ‘green transition’ in move toward embracing deep-sea mining
- Norway has announced its intention to open 281,200 square kilometers (nearly 108,600 square miles) of its nearby ocean to deep-sea mining.
- The country’s parliament could still overturn the decision, but most political parties in Norway currently support moving forward with deep-sea mining.
- Critics of deep-sea mining say Norway needs to pay attention to the warnings of its own scientists about the dangers of deep-sea mining.
Science and culture join forces to restore 120 miles of Hawaiian reefs
- A new program in Hawai‘i, known as Ākoʻakoʻa, will focus on restoring 193 kilometers (120 miles) of coral reefs off the west of the Big Island, which have been in
decline for the past 50 years.
- A key aspect of the program will be the building of a new research and coral propagation facility in Kailua-Kona on the Big Island.
- While the program will be largely science-driven, it will also rely on the traditional knowledge of community leaders and cultural practitioners.
Antarctic warming alters atmosphere, ice shelves, ocean & animals
- The world’s latest record-high temperatures are increasingly putting Antarctica’s role in regulating global climate and ocean currents at risk. But so far, most signs indicate that the continent has not yet reached a point of no return. A rapid reduction in fossil fuel extraction and carbon emissions could still prevent the worst outcomes.
- Increased persistence of the Antarctic ozone hole over the past three years could be an indication of climate change, as it cools the south polar stratosphere, though high variability in this phenomenon and its complexity make causality difficult to prove.
- As global warming continues to melt Antarctica’s edges, a modeling study shows that fresh water going into the ocean could result in the next three decades in a more than 40% slowdown in the currents carrying heat and nutrients northward, essential to sustain ocean life as we know it. If ice shelves melt, allowing Antarctica’s ice sheets to flow to the sea, sea level rise will escalate.
- The latest discovery of a new colony of emperor penguins (Aptenodytes forsteri) in a marginal habitat of the Antarctic is good news, but also bad news, as it further highlights the vulnerability of the species as Antarctic ice masses destabilize — volatility that threatens their survival.
Europe’s top science panel supports call for moratorium on deep-sea mining
- The European Academies’ Science Advisory Council has announced its support for a moratorium on deep-sea mining.
- In a new report, the council conveys its skepticism that deep-sea mining is necessary to meet the needs of critical minerals for renewable technologies.
- It also points out that deep-sea mining would cause irreparable harm to marine ecosystems, and that the mining regulator lacks a scientific definition of what qualifies as serious harm.
- Many European nations and companies currently possess licenses to explore the international seabed for resources, although exploitation has yet to begin.
UN Paris meeting presses ahead with binding plastics treaty — U.S. resists
- At a May-June meeting in Paris, the United Nations Intergovernmental Negotiating Committee (INC) agreed to create, and submit by November, a first draft of an international plan to end plastic pollution by 2040.
- The United States declined to join the 58-nation “High Ambition Coalition” to create a legally-binding cradle-to-grave plan to address plastic production and use. The U.S. continues to hold out for a volunteer agreement that would focus on recycling.
- Delaying tactics by Saudi Arabia and other oil and plastics producing nations used up much time at this second international plastics treaty meeting, but these efforts were beaten back at least temporarily. The next international plastics treaty meeting will be in Kenya this November.
- Some activists pointed to the imbalanced representation at the Paris meeting, where about 190 industry lobbyists were allowed to attend, while communities, waste pickers, Indigenous peoples, youth and other members of civil society most impacted by plastic pollution had very limited opportunities to be heard.
Illegal trawling ravages Tunisian seagrass meadows crucial for fish
- The largest remaining seagrass meadows in the Mediterranean are in Tunisia’s Gulf of Gabès, a hotspot for biodiversity and fishing.
- But illegal bottom trawling and industrial pollution are destroying this unique habitat, a natural nursery to numerous species of fish and other marine fauna.
- Hundreds of trawlers ply their trade overtly with little consequence, and most of the catch makes its way to Europe, skirting laws designed to prevent the entry of illegally caught seafood.
Melting Arctic sea ice is changing bowhead whale migrations, study finds
- Research has found that some bowhead whales in the Bering–Chukchi–Beaufort (BCB) population are no longer migrating to the northwestern Bering Sea in the winter but remain in the Canadian Beaufort Sea.
- These migratory shifts are occurring as sea ice declines in the region due to climate change.
- These changes could mean that bowhead whales become more susceptible to ship strikes, underwater noise, and entanglements, and that Indigenous communities may not be able to rely on bowhead whales for nutrition and cultural subsistence.
- However, this bowhead population is currently not threatened, and these changes may not be fully impacting Indigenous communities yet.
Sargassum surges in Mexico: From nuisance to new green industry?
- Since 2011, sargassum has worsened as a nuisance — possibly due to an influx of synthetic fertilizers into the Atlantic Ocean — with the brown algae washing up on Caribbean beaches where it rots, stinks like rotten eggs and devastates tourism, including in Mexico where 30 million go for beach holidays annually.
- Sea currents have made the beaches of the Mexican state of Quintana Roo a leading arrival point for the annual surge. So early on, scientists, members of civil society, politicians and businesspeople worked together to find solutions and turn the huge waste problem into an opportunity for new green businesses.
- Once cleaned of heavy metals, microplastics, sand and other detritus, sargassum is finding many uses, particularly as biogas, but also biofertilizer, cellulose packaging and even artificial vegan leather. But a national law regulating sargassum remains elusive, with the issue tangled up in Mexican bureaucracy.
- Debate is ongoing as to who should pay for disposal, for expensive recollection and transport of the algae. As entrepreneurs experiment, Mexico has become a regional leader in creating a sargassum industry, with other Caribbean nations seeking to learn from Mexico’s business mistakes and copying its successes.
Crud-to-crude: The global potential of biofuels made from human waste
- Creating liquid biofuels from human waste shows promise as a way to meet one of alternative energy’s greatest challenges: reducing the transportation sector’s heavy carbon footprint. The good news is there is a steady supply stream where waste is treated.
- Humanity produces millions of tons of sewage sludge annually via wastewater treatment. Existing disposal methods include landfilling, application on agricultural land, and incineration; each with social and environmental consequences.
- Harnessing the carbon-rich potential of sludge as a transportation fuel for planes, ships and trucks is part of a drive toward zero waste and creating a circular economy, say experts. A host of projects are underway to prove the effectiveness of various methods of turning all this crud into biocrude.
- Some techniques show promise in lab and pilot tests, but large-scale industrial plants have yet to be built. Using pollutant-laden sewage sludge as a biofuel comes with its own environmental concerns, but lacking a silver-bullet solution to the human waste problem, it could be part of a suite of best alternatives.
Global Ocean Census aims to find 100,000 marine species in 10 years
- A new initiative called the Ocean Census aims to expand marine biodiversity knowledge by finding 100,000 new marine species within a decade.
- It will send scientists on dozens of expeditions at marine biodiversity hotspots and use advanced technology like high-resolution imagery, DNA sequencing and machine learning, to identify new species.
- Scientists estimate that only about 10% of marine species have been formally described, and about 2 million species have yet to be identified.
Parasites of the Caribbean: Study pinpoints cause of sea urchin die-off
- Once abundant in the Caribbean, long-spined sea urchins (Diadema antillarum) experienced a mass die-off in the early 1980s, contributing to coral reef deterioration.
- Another die-off occurred in 2022, leading to a further decline in coral reef health in some parts of the Caribbean.
- A new study has identified the culprit: a parasite called a ciliate that took over the sea urchins’ bodies and quickly killed them.
- While researchers are still trying to determine how this disease is transmitted, they say it’s possible that climate change played a role.
Norway proposes opening Germany-sized area of its continental shelf to deep-sea mining
- Norway has proposed opening up a Germany-sized part of the Norwegian Sea to deep-sea mining.
- The area holds considerable quantities of minerals needed for renewable energy technologies, such as magnesium, cobalt, copper, nickel and rare-earth metals.
- The Norwegian government and industries say they will take a precautionary approach to this deep-sea mining.
- However, critics say plans should be progressing more slowly to properly assess the marine environment and the possible impacts of mining, and the Norwegian government received numerous responses during a public consultation period arguing that the country should not mine its deep sea.
Bringing the ocean’s vast ‘awesomeness’ to light: Q&A with Farah Obaidullah
- “The Ocean and Us,” edited by ocean advocate Farah Obaidullah, provides information from more than 35 female experts on various topics related to the ocean.
- These cover, among others, climate change, overfishing, pollution, ocean management schemes, the human relationship with the ocean, and inclusion and diversity in the ocean space.
- The book helps fulfill the aims of “ocean literacy,” a concept identified by the United Nations as a key driver for achieving the U.N. Decade of Ocean Science for Sustainable Development outcomes.
- “The Ocean and Us” was published by Springer Nature in February 2023.
Deep-sea mining meeting closes without resolving whether mining can start in July
- Delegates to the International Seabed Authority (ISA), the U.N.-associated body responsible for regulating deep-sea mining in international waters, recently met to discuss a possible start of this activity in the near future.
- While some member states support the adoption of regulations that would permit mining to commence, other nations have expressed concerns with the process.
- Observers of the meeting say there is no agreement on whether the ISA will permit mining to begin and that delegates didn’t have sufficient time to discuss the issue at the meetings, which ran March 7-31 in in Kingston, Jamaica.
- In July 2021, Nauru triggered a “two-year rule” that could obligate the ISA to allow mining to start within 24 months, no matter what regulations are in place.
Southern atmospheric rivers drive irreversible melting of Arctic sea ice: Study
- Arctic sea ice extent has reached its winter maximum extent for 2023 at 14.62 million sq. km., the fifth lowest on record. Combined with this year’s unprecedentedly small Antarctic sea ice summer minimum extent, global sea ice coverage reached a record low in January.
- Arctic sea ice is not only receding, but also seriously thinning. New research has found that a huge melt in 2007 and associated ocean warming kicked off a “regime shift” to thinner, younger, more mobile and transient ice that may be “irreversible.”
- A big reason why Arctic sea ice is declining even in the frigid polar winter is that atmospheric rivers, which carry warmth and rainfall like the deluges seen in California recently, are surging up from the south and penetrating the Arctic more often.
Sea level rise looms, even for the best-prepared country on Earth
- The Netherlands, a low-lying European country with more than a quarter of its land below sea level, has been going to great lengths to protect itself from the impacts of climate change, including sea level rise and extreme weather events like heavy rain.
- But even for the Netherlands, a country with the wealth and experience to address these issues, the future remains uncertain, mainly because a range of possible scenarios could play out after 2050.
- According to the Intergovernmental Panel on Climate Change, a low-emissions scenario for the greenhouse gases that amplify global warming could elevate sea levels about half a meter (1.6 feet) above present levels by 2100; a higher-emissions scenario could lead to a 2-m (6.6-ft) rise by 2100 and a 5-m (16.4-ft) rise by 2150.
- Experts say that most other countries need to take the threat of sea level rise more seriously, and that engineering challenges, a lack of awareness and education, sociocultural concerns, and financial constraints are hampering their preparation.
‘Plasticosis’: the new disease killing seabirds and likely many other species
- Scientists have identified a new fibrotic disease called “plasticosis” in flesh-footed shearwaters, a species that inadvertently consumes plastic.
- They found that plasticosis was even present in shearwaters with only a small quantity of plastic in their stomachs.
- While this plastic-related disease has thus far only been identified in flesh-footed shearwaters, experts say that nearly every organism — including humans — is being impacted by plastic in some way.
Will new bottom trawling rules do enough to protect South Pacific seamounts?
- The South Pacific Regional Fisheries Management Organisation (SPRFMO) is an intergovernmental body that regulates fishing across the vast international waters of the South Pacific Ocean.
- At a meeting in Manta, Ecuador, in February, the SPRFMO changed its rules around bottom trawling, a controversial fishing practice that involves dragging fishing gear along the seabed, running roughshod over any organisms or structures in its path.
- The new rules mandate the protection of at least 70% of species that indicate the presence of so-called vulnerable marine ecosystems, such as sponge fields and cold-water coral communities.
- However, conservationists have decried the new rules, calling them less protective than the current policy, let alone the ban on trawling seamounts they’ve been asking for.
Panama ocean conference draws $20 billion, marine biodiversity commitments
- The eighth annual Our Ocean Conference took place in Panama March 2-3.
- Participants made 341 commitments worth nearly $20 billion, including funding for expanding and improving marine protected areas and biodiversity corridors.
- One key announcement came from Panama, which said it would protect more than 54% of its marine region.
Experts pushing for high-seas fishing ban win ‘Nobel Prize for environment’
- Fisheries experts Daniel Pauly and Rashid Sumaila have won the 2023 Tyler Prize for Environmental Achievement, an award administered by the University of Southern California.
- The prize has been referred to as the “Nobel Prize for the environment” and comes with a $250,000 award to be shared between the two laureates.
- Both Pauly and Sumaila have said they would like to use the prize opportunity to spread the message that it’s necessary to ban all fishing on the high seas, those parts of the ocean that don’t fall under any national jurisdiction.
On Lombok, rising sea levels force fishers into different jobs
- Residents of the Indonesian island of Lombok say sea levels are rising at alarming levels, swallowing seaside towns.
- People are abandoning their family trade of fishing to instead grow seaweed or leave the island for stable employment.
- The provincial government created a climate adaptation task force to address the compounding problems of climate change, as families send their children to school and hope they choose a life different from fishing.
An El Niño is forecast for 2023. How much coral will bleach this time?
- Forecasts suggest that an El Niño climate pattern could begin later this year, raising sea temperatures at a time when global temperatures are already higher than ever due to human-driven climate change.
- If an El Niño develops and it becomes a moderate to severe event, it could raise global temperatures by more than 1.5°C (2.7°F) above pre-industrial levels, the threshold set by the Paris Agreement.
- An El Niño would generate many impacts on both terrestrial and marine ecosystems, including the potential for droughts, fires, increased precipitation, coral bleaching, invasions of predatory marine species like crown-of-thorns starfish, disruptions to marine food chains, and kelp forest die-offs.
Mongabay Explains: What’s the difference between artisanal and industrial fishing?
- A new episode of “Mongabay Explains” examines the difference between artisanal and industrial fishing.
- Broadly speaking, artisanal fishing is a form of traditional fishing that uses relatively small, low-powered boats to make short trips close to shore and catch relatively small quantities of fish, whereas industrial fishing uses large vessels that make longer trips farther out to sea and catch larger volumes of fish.
- There are plenty of other differences between the two fishing sectors, too, including their relative impact on the marine environment.
- In this video, Mongabay explores the differences between the two forms of fishing, including some ways people are trying to make each sector more sustainable.
Re-carbonizing the sea: Scientists to start testing a big ocean carbon idea
- Ocean alkalinity enhancement (OAE) involves releasing certain minerals into the ocean, sparking a chemical reaction that enables the seawater to trap more CO₂ from the air and mitigating, albeit temporarily, ocean acidification.
- Some scientists believe OAE could be a vital tool for drawing down and securely storing some of the excess CO₂ humanity has added to the atmosphere that is now fueling climate change.
- Yet many questions about OAE remain, including most prominently how it would impact marine life and ecosystems.
- Several programs are aiming to spark the research needed to answer these questions, including field tests in the ocean.
Top 15 species discoveries from 2022 (Photos)
- A resplendent rainbow fish, a frog that looks like chocolate, a Thai tarantula, an anemone that rides on a back of a hermit crab, and the world’s largest waterlily are among the new species named by science in 2022.
- Scientists estimate that only 10% of all the species on the planet have been described. Even among the most well-known group of animals, mammals, scientists think we have only found 80% of species.
- Unfortunately, many new species of plants, fungi, and animals are assessed as Vulnerable or Critically Endangered with extinction.
- Although a species may be new to science, it may already be well known to locals and have a common name. For instance, Indigenous people often know about species long before they are “discovered” by Western Science.
2022’s top ocean news stories (commentary)
- Marine scientists from the University of California, Santa Barbara, share their list of the top 10 ocean news stories from 2022.
- Hopeful developments this past year include the launch of negotiations on the world’s first legally binding international treaty to curb plastic pollution, a multilateral agreement to ban harmful fisheries subsidies and a massive expansion of global shark protections.
- At the same time, the climate crises in the ocean continued to worsen, with a number of record-breaking marine heat waves and an accelerated thinning of ice sheets that could severely exacerbate sea level rise, underscoring the need for urgent ocean-climate actions.
- This post is a commentary. The views expressed are those of the authors, not necessarily Mongabay.
Hunting for future-proof marine plants in the acidic waters bathing a volcano
- The naturally acidic seawater near an underwater volcano in Italy mimic pH levels that according to worst-case climate projections will be common by the end of the century and beyond.
- Scientists are studying local seagrass and seaweed responses to the acidic conditions.
- One question is whether they could be used for restoration purposes in other places that may become more acidic in a not-so-distant future.
- Even so, some researchers point out that these carbon-sequestering marine plants face more immediate challenges from pollution, habitat degradation and warming waters that need addressing for restoration to succeed.
Mongabay Explains: What’s all the brouhaha over bottom trawling?
- A new episode of “Mongabay Explains” examines the controversial fishing method known as bottom trawling, in which vessels drag a net across the seafloor to scoop up bottom-dwelling marine life.
- Ever since the 14th century, fishers who use other gear types — later joined by conservationists and scientists — have objected to bottom trawling, saying the gear takes too many fish and destroys seafloor habitat that’s essential to the functioning of marine ecosystems.
- Proponents of bottom trawling, however, argue that the practice provides an important share of our seafood as well as numerous jobs, and cannot be abandoned.
- In this video, Mongabay takes a look at bottom trawling and the reasons it’s so controversial.
Melting ice created the perfect storm for a rapidly acidifying Arctic Ocean
- The Arctic Ocean has grown more acidic at a surprising rate in recent years, three times faster than the rest of the global ocean.
- Melting sea ice has exposed the top level of the Arctic Ocean to air rich with carbon dioxide, creating a layer that sopped up carbon from the atmosphere.
- Increased acidity may hamper the ability of marine organisms to build their shells, causing ripple effects through the Arctic food web.
Illegal bottom trawling widespread inside Mediterranean marine protected areas
- A new “atlas” reveals widespread illegal bottom trawling inside Mediterranean marine protected areas.
- The atlas, an interactive online map, shows thousands of days of apparent bottom-trawling activity in areas where it is banned, in 2020 and 2021.
- Bottom trawlers can damage the seabed, destroy coral and sponge habitats, and catch unintended species at a high rate.
- The findings demonstrate “the lack of enforcement and transparency in the Med, which is the most overfished sea in the world,” an atlas coordinator told Mongabay.
France’s Macron joins growing chorus calling for deep-sea mining ban
- On Nov. 8, French President Emmanuel Macron became the first head of state to call for a complete ban on deep-sea mining, an activity that would extract industrial quantities of minerals from the seabed in international waters in the near future.
- Delegates of the International Seabed Authority (ISA) are currently meeting in Kingston, Jamaica, to discuss deep-sea mining regulations, and many member states are using this forum to express their concerns about mining going ahead.
- In June 2021, the Pacific island nation of Nauru, which sponsors Nauru Ocean Resources Inc. (NORI), a subsidiary of Canadian firm The Metals Company (TMC), triggered a “two-year rule” that could force the ISA to allow mining to go ahead in two years with whatever regulations are in place.
Negotiations to conserve Antarctic Ocean end in stalemate on many issues
- The 41st annual meeting of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), the intergovernmental body charged with conserving marine life in the Southern Ocean and managing fisheries there, ended Nov. 4 with little progress made on several key issues.
- In 2009 CCAMLR committed to creating a network of marine protected areas to preserve Antarctic ecosystems. It established one that year and another in 2016, but since then China and Russia have repeatedly blocked the creation of additional protected areas, as well as other conservation-related measures.
- The commission also failed to reach the consensus required to enact new regulations for the krill and toothfish fisheries, or to protect a vast nesting area for icefish discovered earlier this year.
- CCAMLR members did agree to designate eight new vulnerable marine ecosystems, areas home to slow-growing organisms such as corals, sponges, brittle stars and feather stars that are now permanently protected from bottom fishing.
Fish-feed industry turns to krill, with unknown effects on the Antarctic ecosystem
- The Antarctic krill fishing industry has been growing in the past two decades.
- The global growth of fish farming is driving the demand for Antarctic krill as an alternative to wild fish in fish feeds, amid the depletion of many wild fish stocks.
- Independent scientists say the krill fishery could have a detrimental effect on Antarctica’s predator populations, which are also suffering from the impacts of global warming.
- The krill industry is expanding its fleet and planning to significantly increase catches in the next few years.
Heat-sensing drone cameras spy threats to sea turtle nests
- Researchers used heat-detecting cameras mounted on drones to monitor sea turtle nesting on a beach in Costa Rica’s Osa Peninsula.
- Using thermal infrared imagery, researchers detected 20% more turtle nesting activity than on-the-ground patrollers did. The drone imagery also revealed 39 nest predators and other animals, as well as three people, assumed to be poachers, that were not detected by patrollers.
- In Costa Rica, turtle eggs are sold locally and illegally for their alleged aphrodisiac properties. Six out of the seven species of sea turtles are threatened globally, and protecting their eggs is one of the easiest ways to ensure they endure into the future.
- The lead author says these methods are still rather expensive and aren’t a replacement for patrollers but could be an extra tool that they can use to get a big improvement on night patrols, especially on nesting beaches that are dangerous and inaccessible.
Proposal to grant the ocean rights calls for a sea change in legal framework
- In 2022, the professional sporting group the Ocean Race launched a bid to establish the Universal Declaration of Ocean Rights (UDOR).
- The proposed legal structure would give the ocean legal rights within a multilateral governance system.
- While some laws protect parts of the ocean, there is currently no framework to specifically recognize the ocean’s inherent rights on a national or international level.
- Various countries have already voiced their support for the UDOR, including Monaco, Cabo Verde and Panama.
Fished out at sea and smoked out on land, Senegal fishers take on a fishmeal factory
- A fishers’ collective in Cayar, east of Dakar, says a fishmeal factory there is jeopardizing livelihoods and endangering public health.
- Analysis in September of water from a lake revealed pollution by biodegradable organic matter causing deoxygenation that is harming aquatic life.
- Some residents of Mbawane, in Cayar municipality, say the fishmeal company’s operations are a good thing, making use of surplus fish which would otherwise rot on the beach.
Indonesian program pays fishers to collect plastic trash at sea
- The Indonesian fisheries ministry has launched a four-week program to pay fishers to collect plastic trash from the sea.
- The initiative is part of wider efforts to reduce Indonesia’s marine plastic pollution by 70% by 2025.
- The country is a top contributor to the plastic trash crisis in the ocean.
- Each of the 1,721 participating fishers will receive the equivalent of $10 a week for collecting up to 4 kg (9 lbs) of plastic waste from the sea daily.
Podcast: ‘Destructive & flawed’: Claire Nouvian on bottom trawling’s many impacts
- Goldman Environmental Prize winner Claire Nouvian joins the Mongabay Newscast to discuss the many impacts of bottom trawling and a historic policy shift by the European Commission to rein in the practice.
- This kind of fishing is known for damaging deep-water coral reef ecosystems and marine biodiversity, and for having a heavy carbon footprint.
- Nouvian discusses the successful activism of her organization that won an EU-wide ban on bottom trawling below 800 meters (875 yards) after seven years of grassroots organizing. She also discusses what individuals can do if they want to support more sustainable fishing practices.
‘One more thing’ about plastics: They could be acidifying the ocean, study says
- New research suggests that plastic could contribute to ocean acidification, especially in highly polluted coastal areas, through the release of organic chemical compounds and carbon dioxide, both of which can lower the pH of seawater.
- The study found that sunlight enabled this process and that older, degraded plastics released a higher amount of dissolved organic carbon and did more to lower the pH of seawater.
- However, the findings of this study were conducted in a laboratory, so it’s unclear whether experiments conducted in estuaries or the open ocean would yield similar results, experts said.
Agulhas Current enigma: An oceanic gap in our climate understanding
- Comprehending the workings of western boundary ocean currents, like those of the Agulhas Current off the South African coast, may hold a key to Earth’s climate system. But understanding this particular current is hampered by a major lack of in-situ data. This gap leaves us in the dark about local, regional and global climate impacts.
- The Agulhas Current, located in the Indian Ocean, is one of the most energetic ocean current systems in the world. Changes to it can impact local weather in South Africa and elsewhere in the Southern Hemisphere, and perhaps influence large-scale climatic changes in the Northern Hemisphere and globally as well.
- However, it is not clear how and what these impacts may be, or when they may occur. With climate change escalating rapidly due to unabated human carbon emissions, it is now more important than ever that we understand the impacts of Southern Hemisphere ocean currents, and integrate their actions into climate models.
- But attempts at long-term monitoring of the Agulhas Current System have not been fully successful. Accomplishments and failures to date have underscored significant local research capacity challenges, and differences in the approach to, and financing of, ocean science in the Global North as compared to the Global South.
Fish return to Southern Brazil after trawling ban
- Small- and large-scale fishers report an increase in the volume and variety of fish species in the Patos Lagoon and the coast of Rio Grande do Sul state.
- Such abundance came after a bill banning motorized trawling on the state’s coast was passed and signed into law in 2018.
- Drafted by fishers and scientists and passed unanimously in the state parliament, the law goes against the interests of President Bolsonaro’s allies.
- Appointed to the Federal Supreme Court by Bolsonaro, Justice Kassio Nunes Marques overturned the Court’s prevailing view and suspended the effects of a previous ruling. On a date yet to be scheduled, the Court’s plenary session will have the final word.
Europe moves to protect deep-sea sites in Atlantic from bottom fishing
- The European Commission recently announced that it will protect 16,000 square kilometers (6,200 square miles) of the deep sea — known as “vulnerable marine ecosystems” — in EU waters in the northeast Atlantic Ocean by prohibiting bottom fishing in these areas.
- This move is a key component to the Deep-Sea Access Regulation, a plan adopted by the EC in 2016 to protect deep-sea environments in EU waters. However, the regulation stipulated that vulnerable marine ecosystems should be protected by 2018, so its implementation comes four years late.
- The fishing sector has warned that this move will threaten the future of bottom fishing and impact more than 10,000 fishers.
- Conservation experts have welcomed this announcement, despite its lateness, saying that such a move is essential in protecting fragile and ecologically important deep-sea environments.
Regulator approves first deep-sea mining test, surprising observers
- The International Seabed Authority (ISA), the intergovernmental body responsible for overseeing deep-sea mining operations and for protecting the ocean, recently granted approval for a mining trial to commence in the Clarion-Clipperton Zone (CCZ) in the Pacific Ocean.
- The company undertaking this trial is Nauru Ocean Resources Inc (NORI), a subsidiary of Canadian-owned The Metals Company (TMC), which is aiming to start annually extracting 1.3 million metric tons of polymetallic nodules from the CCZ as early as 2024.
- The approval for this mining test, the first of its kind since the 1970s, was first announced by TMC earlier this week.
- Mining opponents said the ruling took them by surprise and they feared it would pave the way for exploitation to begin in the near future, despite growing concerns about the safety and necessity of deep-sea mining.
Acid test: Are the world’s oceans becoming too ‘acidic’ to support life?
- The world’s oceans absorb about a quarter of humanity’s carbon dioxide emissions, buffering us against higher atmospheric CO2 levels and greater climate change. But that absorption has led to a lowering of seawater pH and the acidification of the oceans.
- The process of ocean acidification is recognized as a leading threat to ocean life due to its impairment of calcifying organisms and other marine species. The full impacts of acidification are unknown, but at some point reduced pH could be disastrous biologically.
- Researchers have designated ocean acidification as one of nine planetary boundaries whose limits, if transgressed, could threaten civilization and life as we know it. But there is debate as to whether there is a global boundary for this process, since acidification impacts some regions and species more or less than others, making it hard to quantify.
- Scientists agree that the primary solution to ocean acidification is the lowering of carbon emissions, though some researchers are investigating other solutions, such as depositing alkaline rock minerals into oceans to lower the pH of seawater.
Delegates come close, but fail again to clinch high seas protection treaty
- At the close of two weeks of negotiations on Aug. 26 in New York, delegates from around the world had failed to net consensus on a high-stakes, legally binding treaty to conserve biodiversity on the high seas.
- These areas beyond national jurisdictions comprise two-thirds of the global ocean and are a vast, resource-rich global commons. Yet there is no comprehensive, agreed-upon framework governing resource extraction or conservation there.
- Top sticking points included fair access to marine resources for all and how to establish marine protected areas on the high seas.
- The meeting was the fifth of four planned diplomatic sessions that began in 2017 following more than 10 years of discussion. It ended with a commitment to reconvene before the year is over.
Three-fourths of waste in Jakarta’s notoriously polluted rivers is plastic
- Most of the waste collected from the rivers and holding facilities in Indonesia’s capital, Jakarta, is plastic, new field-based research has found.
- Researchers note that the plastic debris recovered from the surface water amounted to 9.9 grams, or a third of an ounce, per person on average, which is lower than an estimate from a widely cited 2015 study.
- The researchers have called for a better mitigation strategy to eliminate plastic pollution in rivers and subsequently the ocean.
- Indonesia, a country of more than 270 million people, is the No. 2 contributor to global marine plastic pollution, behind only China.
Study paints ‘bleak picture’ for nearly all marine life without emissions cuts
- New research published in Nature Climate Change has found that nearly 90% of assessed marine life would be at high or critical risk by 2100 if the world continues upon a high-emissions pathway.
- It found that the risks would be more concentrated in the tropics, and that top predators would be more at risk than species lower down the food chain.
- However, if countries drastically reduce their emissions, the study found that climate risk would decrease for more than 98% of these species.
Climate change and overfishing threaten once ‘endless’ Antarctic krill
- Antarctic krill are one of the most abundant species in the world in terms of biomass, but scientists and conservationists are concerned about the future of the species due to overfishing, climate change impacts and other human activities.
- Krill fishing has increased year over year as demand rises for the tiny crustaceans, which are used as feed additives for global aquaculture and processed for krill oil.
- Experts have called on the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), the group responsible for protecting krill, to update its rules to better protect krill; others are calling for a moratorium on krill fishing.
- Antarctic krill play a critical role in maintaining the health of our planet by storing carbon and providing food for numerous species.
Amid haggling over deep-sea mining rules, chorus of skepticism grows louder
- This week, the International Seabed Authority, the intergovernmental body tasked with overseeing deep-sea mining in international waters, concluded its recent set of meetings, which ran from July 4 to Aug. 4, 2022.
- The purpose of these meetings was to progress with negotiations of mining regulations, with a view that deep-sea mining will start in July 2023 after the Pacific island nation of Nauru triggered a rule that could obligate this to happen.
- While many countries appear to support the rapid development of these regulations, an increasing number of other countries have expressed concern with this deadline, indicating a possible turn of events.
Sea life may downsize with ocean warming — bringing challenging impacts
- A new model predicts that marine microbes could shrink by up to 30% in the future due to climate change, impacting bigger organisms that eat them including fish, potentially disrupting the food chain from the bottom up. Smaller fish would mean impacted fisheries. Smaller microbes could mean less carbon sequestration.
- Warmer oceans hold less oxygen, and the model predicts that sea life will get smaller in response to more limited oxygen. But scientists have long debated why this downsizing occurs, and some say that other factors not considered in the model could impact oceanic microbes in unexpected ways.
- Accurately predicting warming impacts on marine life could improve ocean resource management.
Concerns over transparency and access abound at deep-sea mining negotiations
- Delegates to the International Seabed Authority (ISA), the U.N.-mandated body responsible for overseeing the development of deep-sea mining in international waters and protecting the ocean, are currently meeting in Kingston, Jamaica, to negotiate a set of regulations that would determine how deep-sea mining can proceed.
- Scientists and conservationists say there are many transparency issues at the current meetings, and that the ISA has restricted access to key information and hampered interactions between member states and civil society.
- However, the ISA has stated that it’s committed to transparency and that attendees have full access to the discussions.
- Deep-sea mining could begin in as little as a year with whatever regulations are currently in place.
‘The sea means everything’: Q&A with deep-sea mining opponent Debbie Ngarewa-Packer
- New Zealand parliamentarian and Māori activist Debbie Ngarewa-Packer has spent more than two decades serving in leadership roles, using her positions to advance social justice issues and to campaign for the protection of the marine environment.
- A key issue that Ngarewa-Packer is currently working on is a push to ban deep-sea mining in the global ocean, a proposed activity that would extract large amounts of minerals from the seabed.
- Ngarewa-Packer previously worked with other Māori activists, NGOs and community members to block consent for a deep-sea mining operation in her home district of South Taranaki on New Zealand’s North Island.
- In an interview with Mongabay, Ngarewa-Packer talks about why it’s critical to protect the deep sea from mining, what ancestral teachings say about protecting the ocean, and why she feels hopeful about the future.
Scientists strive to restore world’s embattled kelp forests
- Kelp forests grow along more than one-quarter of the world’s coastlines, and are among the planet’s most biodiverse ecosystems. But these critical habitats are disappearing due to warming oceans and other human impacts.
- Sudden recent wipeouts of vast kelp forests along the coastlines of Tasmania and California highlighted how little was known about protecting or restoring these vital marine ecosystems.
- Scientists are finding new ways to help restore kelp, but promising small-scale successes need to be ramped up significantly to replace massive kelp losses in some regions.
- Global interest in studying seaweed for food, carbon storage and other uses, may help improve wild kelp restoration methods.
‘Tendrils of hope’ for the ocean: Q&A with conservationist Charles Clover
- The latest book by Charles Clover, “Rewilding the Sea,” published by Penguin Random House UK, tells stories of what can happen when governments, scientists, conservationists and fishers work together to protect and restore the ocean, generating hope for the future.
- While the term “rewilding” usually refers to restoration efforts that take place on land, Clover argues that the sea can also be rewilded through the reinstatement of ecosystems as well as by simply allowing nature to repair itself.
- He further argues that rewilding can be achieved through new approaches to fisheries management, the creation of marine protected areas, and the protection of parts of the ocean known to sequester carbon.
- While the book acknowledges that the oceans are facing a tremendous number of pressures due to human activities, Clover calls the destruction of ocean life the “world’s largest solvable problem.”
How will climate change impact cold-water corals? Mostly through food loss, study says
- A new study warns that cold-water corals, also known as deep-water corals, could be most impacted by a decrease in food supply as climate change shifts the dynamics of the planet’s oceans.
- The authors came to this conclusion by examining how cold-water corals survived the last major period of global warming that occurred at the end of the last glacial period and the start of the current interglacial period, which is somewhat analogous to how the Earth is projected to warm by the end of this century.
- However, experts point out that cold-water corals today are subjected to a number of additional stressors, including ocean acidification, destructive fishing practices, and pollution, and that the climate is changing far more rapidly than it did in the past.
- Cold-water corals are considered to be equally important — or perhaps even more important — than tropical corals, which makes understanding their chances of survival of the utmost importance, researchers say.
Boats behaving badly: New report analyzes China’s own fisheries data
- China’s distant-water fishing fleet, which operates on the high seas and in other countries’ waters, is far bigger and catches far more seafood than those of other nations.
- As a result, and also because of numerous high-profile cases of illegal behavior, the Chinese fleet receives intense scrutiny from international NGOs and the media.
- A new report, based mainly on data China released since enacting transparency measures in 2017 as well as a database of global fisheries violations and crew interviews, identified hundreds of fisheries offenses committed by the fleet between 2015 and 2019, and details a range of human rights abuses and environmentally destructive fishing practices.
- However, some experts say that although the Chinese fleet is by far the biggest, vessel for vessel its behavior isn’t all that different from other fleets, and that all share responsibility to reform.
Robot revolution: A new real-time accounting system for ocean carbon
- Oceans are key to understanding climate change, seeing as they take up and store 25% of the carbon that human activities add to Earth’s atmosphere. But there are big gaps in our knowledge regarding ocean carbon storage and release, and how it is evolving as climate change unfolds, a problem scientists are now addressing.
- An international deployment of thousands of robotic floats, fitted with sophisticated biogeochemical sensors, is underway and already providing real-time data that scientists can integrate into ocean carbon budgets and climate models. Many more floats are coming, with the capacity to operate in remote regions.
- One such place is the Southern Ocean around Antarctica, which accounts for almost half of the worldwide oceanic carbon sink. Windier conditions there, caused by climate change, are churning up more carbon-rich waters from the depths, releasing stored carbon and introducing unforeseen variability into ocean carbon emission estimates.
- Robots are starting to monitor these emissions in real time. More accurate ocean carbon budgets will improve accounting of land-based carbon dioxide emissions, help create more accurate assessments of how well global carbon agreements such as the Paris Agreement are meeting goals, and will help assess ocean carbon dioxide removal plans.
Oceans conference comes up with $16b in pledges to safeguard marine health
- The seventh Our Ocean Conference took place in the Pacific island nation of Palau on April 13 and 14.
- Representatives of governments, the private sector, civil society groups and philanthropic organizations made 410 commitments worth more than $16 billion toward improving the health, productivity and protection of the world’s oceans.
- Discussions focused around the importance of ocean-based climate solutions and the linkage between healthy oceans and healthy communities.
- The setting in a small island developing state lent the event a unique perspective, underscoring the crucial role and leadership of Indigenous peoples and local communities in tacking the climate change and ocean crises.
‘A huge mistake’: Concerns rise as deep-sea mining negotiations progress
- The International Seabed Authority (ISA), the U.N.-affiliated organization tasked with managing deep-sea mining activities, recently held a series of meetings to continue negotiating the development of mining regulations.
- Deep-sea mining may start as early as 2023 after Nauru triggered a two-year rule embedded in the U.N. Convention on the Law of the Sea that could essentially allow its sponsored company to start mining with whatever regulations are currently in place.
- Many states are eager to finalize a set of regulations over the next 15 months that would determine how mining can proceed in the deep sea.
- But other states and delegates have noted the lack of scientific knowledge around deep-sea mining, the absence of a financial compensation plan in the event of environmental damage, and ongoing transparency issues in the ISA — and the unlikelihood of finalizing regulatory measures in a short period of time.
NGOs block gillnet fishing across 100,000 sq km of Great Barrier Reef
- In an effort to protect dugongs and other threatened species, WWF-Australia bought a commercial gillnet fishing license for a swath of ocean in the northern Great Barrier Reef, to establish a de-facto marine sanctuary spanning more than 100,000 km2 (38,600 mi2).
- Dugongs, turtles, dolphins and other marine animals are easily caught in gillnets, and experts say many fatalities go unreported.
- The newly protected region is an important feeding ground for dugongs, supporting a local population of about 7,000, experts say.
- WWF-Australia says it hopes the Australian and Queensland state governments will establish more permanent protections for dugongs on the Great Barrier Reef, and that Traditional Owners can use the area for sustainable fishing and tourism.
Oil spill contaminates wildlife, beaches and protected areas in Peru
- On Jan. 15, a refinery owned by Spanish oil company Repsol spilled nearly 12,000 barrels of oil into the sea off Lima, Peru, as it was pumping the oil from a tanker.
- Experts have questioned why the refinery of La Pampilla was operating that day, when there were unusually high waves caused by the Tonga volcano eruption and tsunami.
- Peru’s Environmental Evaluation and Enforcement Agency (OEFA) has fined Repsol for similar spills on at least three prior occasions, and this time the company could be hit with more than $37 million in fines.
- The spill has spread beyond the Lima coast and out toward islands that are part of a network of protected nature reserves, posing serious threats to marine life and to artisanal fishermen.
The Great Barrier Reef is bleaching — once again — and over a larger area
- The Great Barrier Reef is currently experiencing its sixth mass bleaching event, and the fourth event of this kind to happen in the past six years.
- Based on aerial surveys that were concluded this week, bleaching has affected all parts of the Great Barrier Reef, with the most severe bleaching occurring between Cooktown, Queensland, and the Whitsunday Islands.
- Sea surface temperatures around the Great Barrier Reef have been higher than normal, despite the region going through a La Niña climate pattern, which usually brings cooler, stormier weather.
- Climate change remains the biggest threat to the Great Barrier Reef and other reefs around the world, experts say.
Marine cold spells, a potential buffer against warming seas, are fading away
- A new study has found that marine cold spells have decreased in number and intensity since the 1980s due to climate change.
- Marine cold spells can have both negative and positive impacts on the environment; they can wreak havoc on ecosystems like coral reefs, but they can also buffer the impacts of heat stress during marine heat waves.
- While marine cold spells are decreasing, marine heat waves are increasing — but the relationship between these two kinds of events still isn’t clear, the study says.
Ships sunk in nuclear tests host diverse corals, study says. But do we need them?
- Researchers surveyed 29 warships at Bikini Atoll and Chuuk Lagoon and found that they hosted up to a third of coral genera found on natural reefs in neighboring regions.
- This study has led researchers to ask a controversial question: Can these kinds of shipwrecks act as biodiversity havens for corals?
- While the study does not provide an answer to this question, the authors say this idea should be explored.
- Climate change is one of the biggest threats to coral reefs since rising temperatures can cause widespread bleaching events.
Chemical recycling: ‘Green’ plastics solution makes more pollution, says report
- The plastics industry claims that ‘chemical recycling’ or ‘advanced recycling’ technologies, which use heat or solvents to convert waste plastic into chemical feedstocks that can potentially be further processed into new plastics, are a green alternative to mechanical recycling.
- But according to a new report, five out of eight U.S. facilities assessed use chemical processes to produce combustible fuel, not new plastics. In addition, facilities are disposing of large amounts of hazardous waste which in some cases includes benzene — a known carcinogen — lead, cadmium and chromium.
- Critics say the chemical recycling industry’s multi-step incineration processes are polluting and generating greenhouse gases without alleviating virgin plastic demand. Environmental permits for six U.S. facilities allow release of hazardous air pollutants that can cause cancer or birth defects.
- A new UN framework to fight global plastic pollution could offer nations flexibility over how they meet recycling targets, potentially allowing the industry to lobby for policy incentives and regulatory exemptions for plastic-to-fuel techniques — policies that may threaten the environment and public health, say experts.
The world says yes to a cradle to grave plastics treaty: Now the work begins
- 175 countries unanimously agreed last week on a United Nations framework to fight global plastic pollution from cradle to grave. Reluctant nations, including India and Japan, sought a far more limited agreement only dealing with ocean plastic pollution. But they acquiesced in the end.
- A committee will shortly begin work on drafting the treaty, determining global rules, and financing and enforcement mechanisms, with a goal of finishing by the end of 2024.
- While many crucial details remain to be worked out over the next two years, the UN resolution calls for a combination of required and “voluntary actions” to address the cradle to grave plastics crisis. The document even addresses the extraction of chemicals used in production, meaning the final treaty could seriously impact the oil industry.
- Also, wealthier nations may be called on to provide assistance to less developed ones. Environmental groups are pleased with the agreement, though caution that much work lies ahead. The plastics industry had hoped for a far more limited agreement and it is expected to offer input on the final shape of the treaty.
Can we save coral reefs? | Problem Solved
- Since the 1950s the world has lost half of its coral reef ecosystems.
- The Intergovernmental Panel on Climate Change (IPCC) predicts that with 1.5°C (2.7°F) of warming above pre-industrial levels we could lose up to 90% of the world’s coral reefs.
- This amount of warming could happen in as little as six years.
- Experts say there’s still time to save coral reefs, but it’ll require swiftly addressing the three largest impacts to reefs: land-based pollution, overfishing and, most importantly, climate change.
Latest Nigeria oil spill highlights ‘wretched’ state of the industry
- An oil production vessel exploded just off the coast of Nigeria on Feb. 3, killing seven of 10 crew members on board.
- Nigeria’s monitoring of and response to oil industry incidents is poor: three weeks later, the size and impact of the spill is still unknown.
- This is the second major incident reported in the past three months, and highlights potential problems as oil majors sell aging infrastructure to locally owned companies that are ill-equipped to operate them safely.
Caffeine: Emerging contaminant of global rivers and coastal waters
- Caffeine is the most consumed psychostimulant in the world, and a regular part of many daily lives, whether contained in coffee, chocolate, energy drinks, or pharmaceuticals.
- Partially excreted in urine, it is now ubiquitous in rivers and coastal waters. So much so that its detection is used to trace wastewater and sewage pollution. A new study found it to be in more than 50% of 1,052 sampling sites on 258 rivers around the globe. Another new study enumerates caffeine harm in coastal and marine environments.
- This continual flow of caffeine into aquatic ecosystems is causing concern among scientists due to its already identified impacts on a wide range of aquatic life including microalgae, corals, bivalves, sponges, marine worms, and fish. Most environmental impacts — especially wider effects within ecosystems — have not been studied.
- Soaring global use of products containing caffeine means the problem will worsen with time. Untreated sewage is a major source. And while some sewage treatment facilities can remove caffeine, many currently can’t. Far more study is needed to determine the full scope and biological impacts of the problem.
‘They’re going to get worse and worse’: Marine heat wave persists off Sydney
- In November 2021, an unusual marine heat wave materialized off the coast of Sydney; sea surface temperatures in the area have yet to go down.
- This marine heat wave is just one of numerous events occurring across the global oceans as human-induced climate change heats up the oceans.
- While marine heat waves can be triggered by a range of atmospheric, oceanic and climatic drivers, climate change plays a key role in driving these events.
Belize shows how fishers and researchers can collaborate to protect sharks
- A new study found that Caribbean reef sharks (Carcharhinus perezi) experienced a decline between 2009 and 2019 at Glovers Reef Marine Reserve, a marine protected area off the coast of Belize.
- The researchers theorized that the decline had to do with legal shark fishing that had been permitted on the edges of the MPA since 2016.
- The researchers worked with government officials and the fishing community to implement no-take zones that extended 2 miles (3.2 kilometers) around Glover’s Reef Atoll, as well as around two other sites: Lighthouse Reef Atoll and Turneffe Atoll.
- While it’s too early to tell if the new restrictions are having a positive impact, experts say they’re hopeful that Caribbean reef sharks will bounce back.
Scientists’ secret weapon to monitor the Southern Ocean? Elephant seals
- Southern elephant seals living on Kerguelen Island, a sub-Antarctic island, are helping to gather information about the Southern Ocean with data-logging devices attached to their hair.
- For instance, the elephant seals have helped gather data on sea ice formation, ocean and ice shelf interactions, and frontal system dynamics.
- The Southern Ocean provides many ecosystem services for the planet, but the region is rapidly changing due to climate change.
Tiny plastic particles accumulating in river headwaters: Study
- Researchers modeled the journey of microplastics released in wastewater treatment plant effluent into rivers of different sizes and flow speeds, focusing on the smallest microplastic fragments — less than 100 microns across, or the width of a single human hair.
- The study found that in slow-flowing stream headwaters — often located in remote, biodiverse regions — microplastics accumulated quicker and stayed longer than in faster flowing stretches of river.
- Microplastic accumulation in sediments could be the ‘missing plastic’ not found in comparisons of stream pollution levels with those found in oceans. Trapped particles may be released during storms and flood events, causing a lag between environmental contamination and release to the sea.
- A few hours in stream sediments can start to change plastics chemically, and microbes can grow on their surfaces. Most toxicity studies of microplastics use virgin plastics, so these environmentally transformed plastics pose an unknown risk to biodiversity and health.
‘There’s not much hope’: Mediterranean corals collapse under relentless heat
- In 2003, a marine heat wave devastated coral reef communities in the Mediterranean Sea, including the reefs in the Scandola Marine Reserve, a protected region off the coast of Corsica.
- More than 15 years later, the coral reef communities in Scandola still have not recovered.
- Researchers determined that persistent marine heat waves, which are now happening every year in the Mediterranean, are preventing Scandola’s slow-growing coral reefs from recuperating.
- Human-induced climate change is the culprit; persistent rising temperatures in the ocean have normalized marine heat waves, not only in the Mediterranean, but in the global oceans.
As world drowns in plastic waste, U.N. to hammer out global treaty
- After years of largely neglecting the buildup of plastic waste in Earth’s environment, the U.N. Environment Assembly will meet in February and March in the hopes of drafting the first international treaty controlling global plastics pollution.
- Discarded plastic is currently killing marine life, threatening food security, contributing to climate change, damaging economies, and dissolving into microplastics that contaminate land, water, the atmosphere and even the human bloodstream.
- The U.N. parties will debate how comprehensive the treaty they write will be: Should it, for example, protect just the oceans or the whole planet? Should it focus mainly on reuse/recycling, or control plastics manufacture and every step of the supply chain and waste stream?
- The U.S. has changed its position from opposition to such a treaty under President Donald Trump, to support under President Joe Biden, but has yet to articulate exactly what it wants in an agreement. While environmental NGOs are pushing for a comprehensive treaty, plastics companies, who say they support regulation, likely will want to limit the treaty’s scope.
Innovative sewage solutions: Tackling the global human waste problem
- The scale of the world’s human waste problem is vast, impacting human health, coastal and terrestrial ecosystems, and even climate change. Solving the problem requires working with communities to develop solutions that suit them, providing access to adequate sanitation and adapting aging sewage systems to a rapidly changing world.
- Decentralized and nature-based solutions are considered key to cleaning up urban wastewater issues and reducing pressure on, or providing affordable and effective alternatives to, centralized sewage systems.
- Seeing sewage and wastewater — which both contain valuable nutrients and freshwater — as a resource rather than as pollutants, is vital to achieving a sustainable “circular economy.” Technology alone can only get us so far, say experts. If society is to fully embrace the suite of solutions required, a sweeping mindset change will be needed.
As climate change melts Antarctic ice, gentoo penguins venture further south
- Researchers have discovered a new colony of gentoo penguins in Antarctica previously unknown to science.
- The colony was found on Andersson Island on the east side of the Antarctic Peninsula, which is the furthest south the species has ever been found in that region.
- Scientists say climate change played a key role in the penguins’ presence on the island, as warming temperatures and record ice melt make new locations habitable for the species.
- Scientists and conservationists are making renewed calls to establish a network for marine protected areas in Antarctica to help safeguard the region as the climate rapidly changes.
Bleached reefs still support nutritious fish, study finds
- A recent study published in the journal One Earth looked at the nutrients available in fisheries in Seychelles before and after bleaching killed around 90% of the island nation’s coral in 1998.
- Warming ocean temperatures have caused mass bleaching of corals across the tropics, sometimes causing the deaths of these reef-building animals, and the phenomenon is expected to continue as a result of climate change.
- The research found that bleached reefs continue to support fisheries that provide essential micronutrients to human communities.
In hot water: Ocean warming hits another record high on climate change
- A new study has found that, for the sixth year in a row, the world’s oceans have been hotter than they’ve ever been in recent history due to human-induced climate change.
- The research team found that last year, the upper 2,000 meters (6,600 feet) in all oceans absorbed 14 zettajoules more of human-made energy than the previous year, equal to about 145 times the world’s electricity generation in 2020.
- A warming ocean creates a multitude of issues, driving extreme weather events, accelerating sea level rise, disrupting marine biodiversity, threatening global food security, and melting polar ice shelves.
- Experts say the best way to reduce ocean climate impacts is to lower carbon emissions and meet the Paris Agreement goal of not allowing global warming to surpass 1.5°C (2.7°F) over preindustrial levels.
The thick of it: Delving into the neglected global impacts of human waste
- Though little talked about, our species has a monumental problem disposing of its human waste. A recent modeling study finds that wastewater adds around 6.2 million tons of nitrogen to coastal waters worldwide per year, contributing significantly to harmful algal blooms, eutrophication and ocean dead zones.
- The study mapped 135,000 watersheds planetwide and found that just 25 of them account for almost half the nitrogen pollution contributed by human waste. Those 25 were pinpointed in both the developing world and developed world, and include the vast Mississippi River watershed in the United States.
- Human waste — including pharmaceuticals and even microplastics contained in feces and urine — is a major public health hazard, causing disease outbreaks, and putting biodiversity at risk. Sewage is impacting estuary fish nurseries, coral reefs, and seagrasses, a habitat that stores CO2, acting as a buffer against climate change.
- Waste is often perceived as mostly a developing world problem, but the developed world is as responsible — largely due to antiquated municipal sewage systems that combine rainwater and wastewater in the same pipes. As a result, intense precipitation events regularly flush raw sewage into waterways in the U.S., U.K. and EU.
New atlas illuminates impact of artificial light in the ocean at night
- Researchers recently released the first global atlas that quantifies artificial light at night on underwater habitats.
- Artificial light from urban environments along the coast can have far-reaching impacts on a range of marine organisms that have evolved over millions of years to be extremely sensitive to natural light such as moonlight.
- The researchers found that at a depth of 1 meter (3 feet), 1.9 million square kilometers (734,000 square miles) of the world’s coastal oceans were exposed to artificial light at night, equivalent to about 3% of the world’s exclusive economic zones.
- Blue tones from LED lights can penetrate particularly deeply into the water column, potentially causing more issues to underwater inhabitants.
‘Great Blue Wall’ aims to ward off looming threats to western Indian Ocean
- Ten nations in the western Indian Ocean committed this November to create a network of marine conservation areas to hasten progress toward the goal of protecting 30% of the oceans by 2030.
- Less than 10% of the marine expanse in this region currently enjoys protection, and a recent assessment highlighted the price of failure: all the coral reefs are at high risk of collapse in the next 50 years.
- The focus of these efforts won’t just be coral reefs, but also mangroves and seagrass meadows, a lesser-known underwater ecosystem critical for carbon sequestration and oceanic biodiversity.
- Even as overfishing and warming take a toll on marine health, threats from oil and gas extraction are intensifying in this corner of the Indian Ocean.
Top 15 species discoveries from 2021 (Photos)
- Science has only just begun to find and describe all of the species on Earth; by some estimates, only 20% have been described.
- This year, Mongabay reported on newly described species from nearly every continent, including an Ecuadoran ant whose name broke the gender binary, an acrobatic North American skunk, an Australian “killer tobacco,” a fuzzy orange bat from West Africa, tiny screech owls from Brazil, and more.
- Though a species may be new to science, that doesn’t mean it has not yet been found and given a name by local and Indigenous communities.
Deep-sea mining regulator’s latest meeting on rules only muddies the water
- Delegates of the International Seabed Authority (ISA), the multilateral body in charge of deep-sea mining in international waters, met recently in Kingston, Jamaica, and discussed whether to adopt a set of rules — or mining code — to allow deep-sea mining to commence in as little as 18 months.
- Deep-sea mining is a controversial activity that was pushed closer to the horizon when Nauru triggered a “two-year rule” that would theoretically require the ISA to grant an exploitation license within two years, no matter what mining regulations are in place.
- Most ISA member states appeared to be in favor of pushing forward with the mining code, but others questioned the feasibility of this approach, according to observers who attended the meetings.
- The ISA has a dual mandate to give nations equal opportunity and access to mine the seabed as well as to protect the ocean from mining’s harmful effects, but some experts say the ISA’s leadership holds favorable views of mining.
‘Our land, our life’: Okinawans hold out against new U.S. base in coastal zone
- Opponents of the planned relocation of a U.S. military base in Okinawa say they remain undeterred despite the defeat in elections last month of the opposition party that supported the cause.
- Local activists plan to continue opposing the relocation of the Futenma Marine base, from the densely populated city of Ginowan to the less crowded Henoko Bay coastal area.
- The proposed new facility and other military bases in Okinawa have been linked to toxic environmental pollution, military-linked sexual violence, and historical land conflicts between native Okinawans and the mainland Japan and U.S. governments.
- The Okinawa prefecture government recently rejected central government plans to sink more than 70,000 compacting pillars into Henoko’s seabed for construction, which would impact coral and seagrass that host more than 5,000 species of marine life.
If marine noise pollution is bad, deep-sea mining could add to the cacophony
- A new report suggests that the noise pollution produced by deep-sea mining activities could have far-reaching effects on the marine environment, from surface to seafloor.
- While there are many studies that measure the impacts of noise pollution on marine life, more research is needed to fully understand how sound from deep-sea mining could affect the ocean.
- Due to the paucity of information, experts say a precautionary approach to deep-sea mining noise is required and that clear regulations must be put into place by the International Seabed Authority.
- While deep-sea mining has yet to begin, a subsidiary of Canada-based The Metals Company plans to start mining in less than two years.
Countries fail to agree on Antarctic conservation measures for fifth straight year
- Members of the multilateral body responsible for Antarctic marine conservation failed to agree on new measures to protect the Southern Ocean from overfishing.
- China and Russia blocked all proposals to establish new marine protected areas.
- This story was originally published by the Environmental Reporting Collective.
Hospital waste, not masks, are plastic scourge of pandemic: Study
- A new study has found that 26,000 metric tons of pandemic-related plastic waste has been released into the world’s oceans since the start of the COVID-19 pandemci in January 2020.
- The largest share by far of pandemic-related plastic waste is generated by hospitals, while comparatively smaller amounts are from the improper disposal of face masks, COVID-19 testing kits, and packaging from online shopping activity.
- Besides posing a threat to marine life and humans, mismanaged plastic waste may have the potential to alter Earth’s life-support systems, its dynamics and stability, researchers say.
- Plastic is one of many human-made materials included in the “novel entities” planetary boundary, which is one of nine thresholds beyond which life on Earth could become untenable.
Despite deals, plans and bans, the Mediterranean is awash in plastic
- The Mediterranean is considered to be one of the world’s most polluted bodies of water due to waste disposal problems in many countries bordering the sea, as well as the intensity of marine activity in the region.
- There are several existing policies and treaties in place aimed at regulating plastics and reducing plastic pollution in the Mediterranean, but experts say more international cooperation is needed to tackle the problem.
- Citizen science organization OceanEye has been collecting water samples to measure the amount of microplastics present in the surface waters of the Mediterranean.
As seizures of poached giant clams rise, links to ivory trade surface
- A new report released by the Wildlife Justice Commission identifies the giant clamshell trade as a “cause for concern.”
- It suggests the trade could have links with organized crime, and that it could also be endangering elephants since clamshells are a viable substitute for elephant ivory.
- China and Japan are noted as potential markets of concern in the giant clamshell trade.
- Very little is known about the giant clamshell trade, which has prompted experts to call for more investigations into the issue.
Experts see no way back for NZ firm blocked from trying to mine the seabed
- The New Zealand Supreme Court recently blocked consent for a seabed mining operation that would annually extract 50 million tons of iron ore from the seabed off the coast of South Taranaki.
- Environmentalists see this decision as a clear victory, but the mining company has stated its intention to reapply for mining permission.
- But experts say it’s unlikely the company, Trans-Tasman Resources Limited (TTR), will be able to regain consent due to fundamental issues with its application, such as the distinct lack of baseline studies on resident marine life and the potential impacts of mining.
- Conservationists say seabed mining in this part of New Zealand would cause irreversible damage to the ecosystem and threaten many rare and endangered species.
Sea turtles: Can these great marine migrators navigate rising human threats?
- Humanity is quickly crossing critical planetary boundaries that threaten sea turtle populations, their ecosystems and, ultimately, the “safe operating space” for human existence.
- Sea turtles have survived millions of years, but marathon migrations put them at increasing risk for the additive impacts of adverse anthropogenic activity on land and at sea, including impacts from biodiversity loss, climate change, ocean acidification, land-use change, pollution (especially plastics), and more.
- The synergistic effects of anthropogenic threats and the return on conservation interventions are largely unknown. But analysts understand that their efforts will need to focus on both nesting beaches and ocean migration routes, while acting on a host of adverse impacts across many of the nine known planetary boundaries.
- Avoiding extinction will require adaptation by turtles and people, and the evolution of new, innovative conservation practices. Key strategies: boosting populations to weather growing threats, rethinking how humanity fishes, studying turtle life cycles (especially at sea), safeguarding habitat, and deeply engaging local communities.
On board Ghana’s trawlers, claims of human rights abuses and illegal fishing
- A report and video published by the Environmental Justice Foundation describes a range of human rights abuses experienced by fisheries crew members and official observers on board industrial vessels operating in Ghana’s waters.
- According to the report, most of these vessels are involved in illegal fishing practices, including the use of undersized nets, the catching and dumping of juvenile fish, and the transshipment of large quantities of pelagic fish that should be reserved for artisanal fishers, which is helping to push Ghana’s fishery to the point of collapse.
- Human rights abuses are prevalent on industrial fishing vessels across the world, and tend to be entwined with issues of illegal, unreported and unregulated (IUU) fishing.
- While many experts validate the allegations of human rights abuse in the report, some in positions of power suggest the issues aren’t as straightforward as they might appear.
Drive toward green cars shouldn’t rely on mining seabed, conservationists say
- Conservationists are urging electric car and technology companies not to support or use resources derived from deep-sea mining, an activity that could potentially cause irreparable damage to the marine ecosystem in the process.
- The burgeoning electric car industry relies on a number of minerals for batteries, including lithium, manganese, nickel and cobalt, which are not easily accessible from terrestrial sources.
- Deep-sea mining proponents say that mining polymetallic nodules offers an alternative way to procure much-needed minerals for electric car batteries, but conservationists argue that the risks are too great to ignore.
- Instead of mining the deep sea, conservationists say that the focus should shift to developing electric car batteries that do not require hard-to-get minerals, improving terrestrial mining practices, and expanding battery recycling.
Lessons from Brazil’s São Paulo droughts (commentary)
- São Paulo is increasingly facing severe droughts, as is the case in 2021. In 2014 the city came close to having its reservoirs run dry. Brazil’s agriculture and hydropower also depend on reliable rains.
- Anthropogenic climate change is increasing the fluctuations in ocean surface water temperatures, and the frequency is increasing of the combination of warm water in the Atlantic and cold water in the Pacific off the coasts of South America, a combination that leads to droughts in São Paulo.
- The trends in ocean temperatures are expected to worsen these droughts, but what could make them truly catastrophic is the prospect of this variation being combined with the impact of deforestation depriving São Paulo of the water that is recycled by the Amazon forest and transported to southeastern Brazil by the “flying rivers.” The lessons are clear: control global warming and stop deforestation.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.
‘Mismanaged to death’: Mexico opens up sole vaquita habitat to fishing
- The Mexican government has eradicated a “no tolerance” zone in the Upper Gulf of California meant to protect the critically endangered vaquita porpoise.
- The former refuge will now be open for fishing and there will be minimal monitoring and enforcement of illegal activity, experts say.
- Conservationists say this move will certainly lead to the extinction of the vaquita, whose numbers have recently dwindled down to about nine.
Seafloor microbes hoover up methane, keeping global warming in check
- A new study found that carbonate rock mounds on the ocean floor host communities of microbes that actively consume methane, a greenhouse gas that is particularly potent if released into the atmosphere.
- The researchers found that rock-inhabiting microbes consumed methane 50 times faster than microbes that live in sediment.
- These microbes therefore play a crucial role in regulating the Earth’s temperature by consuming methane before it travels up into the water column and into the atmosphere.
Billions in fishing subsidies finance social, ecological harm, report finds
- A new report found that the world’s top 10 fishing nations are spending billions of dollars on harmful fishing subsidies to not only exploit their own domestic waters, but to fish in the high seas and the waters of other nations.
- Experts say these subsidies are propping up fishing industries that would not be viable without financial support, and contributing to overcapacity, overfishing, and illegal, unreported and unregulated (IUU) fishing.
- The report also found that harmful fishing subsidies could also be leading to food security issues in some of the world’s least-developed countries where foreign fleets surpass domestic fleets in terms of subsidies and catches.
- The issue of harmful fishing subsidies will be addressed at an upcoming meeting of the World Trade Organization (WTO) that will take place online on July 15.
Nauru’s intention to mine the seabed prompts alarm among conservationists
- Nauru has notified the International Seabed Authority (ISA) that its sponsored entity, Nauru Ocean Resources Inc. (NORI), plans to commence deep-sea mining in two years’ time, triggering a two-year rule embedded in the U.N. Convention on the Law of the Sea.
- The ISA has yet to generate a mining code that would set out rules and regulations for deep-sea mining activities.
- Experts are concerned that the ISA will prematurely approve Nauru’s application and that deep-sea mining will commence before we fully understand the damage it could cause to biodiversity and ecosystems.
Decades of research back the value of marine reserves to Kenya’s fisheries
- A 24-year study conducted by Tim McClanahan looked at two different interventions to address unsustainable fishing practices in artisanal fisheries along Kenya’s coast: gear restrictions, and a marine reserve that prohibited all fishing activities.
- It found both methods showed an increase of catch per unit effort (CPUE), which indirectly measures the number of target species that were caught.
- Landing sites adjacent to the marine reserve maintained steady total yields, while the gear-restricted sites declined over the study period.
- While marine reserves were shown to generate more long-term benefits, outside experts say they are not always an ideal solution and that other approaches may be more appropriate in managing fisheries.
Climate change isn’t fueling algal blooms the way we think, study shows
- A team of international researchers recently published the first global assessment of harmful algal blooms (HABs) — events in which toxic algae proliferate and cause harm to marine life and humans — based on nearly 10,000 recorded events between 1985 and 2018.
- The study found that there are no global trends that would suggest that climate change is having a uniform impact on HABs throughout the world, although this is a commonly held belief.
- The researchers were able to detect clearer regional trends that showed increases, decreases or no significant changes in HABs in certain parts of the world.
- It also found that there was a perceived increase in HABs amid the booming aquaculture industry, although the study does not necessarily suggest that aquaculture is causing an increase in HABs.
‘Dark’ ships off Argentina ring alarms over possible illegal fishing
- A new report from the NGO Oceana revealed that 800 foreign vessels from China, Taiwan, South Korea and Spain conducted 900,000 hours of visible fishing near Argentina’s exclusive economic zone (EEZ), but that there were more than 600,000 additional hours in which fishing vessels went “dark” by turning off their automatic identification systems (AIS).
- When ships turn off their AIS, there is a strong likelihood that they’re engaging in some kind of illegal activity, such as entering Argentina’s EEZ to illegally fish, the report suggests.
- While China had the highest number of incidences of AIS gaps, the report notes that the Spanish fleet went dark three times as often as the Chinese fleet, and that they spent nearly twice as long with no AIS signal as they did visibly fishing.
- The report also documents that more than 30% of dark vessels eventually traveled to the Port of Montevideo in neighboring Uruguay, a location favored by those involved in illegal fishing. It also notes that more than half of the dark vessels engaged with other ships at sea, most likely to transfer illegally caught fish without needing to go to port.
Satellites keep watch over global reef health in a world first
- Scientists working with the Allen Coral Atlas just launched the world’s first global, satellite-based reef-monitoring system.
- This tool can track global coral bleaching events in near-real-time and provide an overall view of trends and changes in coral reef health that can be used to inform conservation efforts and policy.
- A beta version of the system that was piloted in Hawai‘i during the 2019 Pacific heat wave, and helped identify bleaching hotspots as well as resilient corals that could be used for reef restoration.
A fatal stabbing sends a Gambian fishing village into turmoil over fishmeal
- Three Chinese-owned fishmeal factories have opened in the Gambia since 2016, sparking tensions over allegations of competition with local fishers, overfishing, illegal fishing, and pollution.
- In the town of Sanyang, unresolved disputes with the Nessim Trading fishmeal factory reached a flashpoint on March 15, triggered by the stabbing death of a Sanyang resident, allegedly by a Senegalese worker at the factory.
- Hundreds of people took to the streets in protest, some of them torching the local police station and the fishmeal factory, and destroying boats and equipment belonging to Senegalese fishers.
- The violence drove more than 250 Senegalese residents to flee to the nearby town of Batakonko.
Reversing warming quickly could prevent worst climate change effects: Study
- Irreversible and catastrophic environmental tipping points could still be avoided, even if we exceed global emission reduction targets — provided the world is able to reverse overshoot quickly, according to researchers.
- Simple mathematical models of four earth system tipping elements reveal a lag between overshooting the threshold and irreversible change. “Slow-onset” elements like icecap melt operate on century-long timescales, while Amazon dieback could pass a point of no return in just decades.
- However, experts warn that the models fail to take interactions between different tipping elements into account, which could shorten the amount of time a threshold can be overshot. Many of these interactions are poorly understood, making them difficult to include in climate models.
- Researchers say these results show there is still good reason to take action to mitigate global warming, even if we do overshoot the Paris Agreement target of 1.5°C. Some warn the study results could be used as an excuse to tolerate further delays on global climate action.
Marine microplastics are now invading the atmosphere, study finds
- A new study has found that microplastics are being emitted into the atmosphere, mainly from roads, the ocean, and agricultural practices.
- Annual plastic production actually contributes a lesser amount of atmospheric microplastic than plastic discharge from the marine environment, which highlights the role of legacy pollution, according to the study.
- It’s estimated that about 10 million metric tons of microplastics are emitted into the atmosphere each year, which is similar to the annual amount of anthropogenic black carbon emissions.
- The potential impacts of atmospheric microplastics on human health and ecosystems are largely unknown, and experts are calling for further research and urgent action to address the issue.
Sharks on a knife’s edge as Maldives mulls lifting 10-year fishing ban
- Eleven years ago, the Maldives created a 90,000-square-kilometer (34,750-square-mile) sanctuary that banned shark fishing, but fisheries minister Zaha Waheed said recently that the government may be planning to lift the ban.
- Conservationists say reopening shark fisheries in the Maldives would have devastating effects on shark populations and adversely affect tourism, which brings millions of dollars into the country each year.
- There are unofficial reports the Maldivian government will not be lifting the shark fishing ban, possibly in response to the local and international outcry.
- But a local expert says there are still grounds for concern if long-line fisheries are allowed to operate in the shark sanctuary, or if a legislative loophole is introduced that would allow shark fishing to recommence in some capacity.
Ocean protection scheme can yield ‘triple benefits’ study says
- A new study suggests that carefully planned marine protected areas could yield triple benefits for the ocean, helping to maintain biodiversity, while also increasing fish yields and maximizing the ocean’s ability to sequester carbon in seafloor sediment.
- This study is one of the first to quantify the carbon footprint of ocean trawling, which it equates to the yearly emissions of the global aviation industry.
- The researchers suggest that the planning tools in this study could help inform discussions about how to protect 30% of the oceans by 2030, a goal that is expected to be adopted by the U.N. Convention on Biological Diversity later this year.
- Other proposals for how to achieve 30% protection by 2030 have mostly focused on the high seas, but this plan takes all parts of the ocean into consideration.
‘Minke whales for dinner’: Norway’s controversial whale hunt is still on
- Norway has announced that it will target up to 1,278 common minke whales in its upcoming whaling season, which is the same quota as the past two years.
- While the Norwegian government says its whaling program is sustainable, some scientists, conservationists and animal welfare experts counter this claim.
- These anti-whaling advocates also point to a growing body of evidence that suggests that whales play a pivotal role in regulating the marine ecosystem, and that whales are worth more alive than dead.
- There has been a global moratorium on commercial whaling since 1986, but Norway chooses to reject this ban.
When Chinook salmon is off the menu, other prey will do for endangered orcas
- A new study has found that endangered southern resident killer whales mainly consume endangered Chinook salmon, but will broaden their diet when this species isn’t available.
- The researchers obtained data through prey and fecal waste collected from resident killer whales over a 13-year period.
- Efforts to reinstate Chinook salmon populations through hatchery efforts can play an important role in supporting resident killer whale populations, although these programs need to be carefully managed to ensure that stocks are diverse, the study suggests.
Human impacts leave reefs short on sharks and long on moray eels
- A new study found that moray eels are more abundant on reefs where sharks are absent due to human pressures.
- The paper hypothesizes that moray eels might be benefiting from a reduction in predators and competition for food, although this hasn’t been proven.
- The authors say a lot more research is needed to assess the relationship between sharks and moray eels, and to understand the ecological role moray eels play in the marine environment.
U.N. report lays out blueprint to end ‘suicidal war on nature’
- According to a new report from the United Nations Environmental Programme, the world faces three environmental “emergencies”: climate change, biodiversity loss, and air and water pollution.
- U.N. Secretary-General António Guterres said we should view nature as “an ally,” not a foe, in the quest for sustainable human development.
- The report draws on assessments that quantify carbon emissions, species loss and pollutant flows to produce what the authors call concrete actions by governments, private companies and individuals that will help address these issues.
Women and girls: Let’s transform the ocean by including everyone (commentary)
- On the International Day of Women and Girls in Science, co-founders of the international, Brazil-born Women’s League for the Ocean (Liga) say the healthy future of our planet’s oceans requires the indispensable presence of women in positions of leadership.
- Liga is an international women’s network co-founded by a journalist, a photographer and a scientist that seeks to be part of a movement that empowers women to engage in actions to protect the ocean – from a feminine perspective.
- The more than 2,600 global members of Liga includes scientists, activists, sportswomen, photographers, documentary filmmakers, NGO leaders and journalists.
- Liga’s founders say they want their work to contribute toward healing humanity’s interdependent relationship with the ocean, and promote more sustainable practices from their network outward. This article is a commentary and the views expressed are those of the authors, not necessarily Mongabay.
Fewer than 100 of these giant whales make up a newly described species
- In January scientists announced the designation of a new whale species in the Gulf of Mexico they named Rice’s whale (Balaenoptera ricei).
- The team previously collected genetic samples of the whales but didn’t confirm the new species until they had a complete skeleton.
- Only between 33 and 100 individual members of the species exist, researchers estimate. The species is listed as endangered in the U.S.
- The Gulf of Mexico is fraught with many human-made threats to the whales’ survival, including dense ship traffic, oil and gas exploration, and marine trash.
New study warns that sea levels will rise faster than expected
- A new study has found that sea level rise may happen faster than current models project.
- The Intergovernmental Panel on Climate Change (IPCC) projects that the sea level will rise about a meter (39 inches) by the century’s end, but this study finds that estimate to be conservative.
- The results suggest that sea levels will rise about 25 centimeters (10 in) more per century if carbon emissions are not curbed and the Earth continues to heat up.
Activists make the case that bigger is better to protect Galápagos reserve
- A group of scientists, conservationists and NGOs are campaigning to expand the current Galápagos Marine Reserve to protect an additional 445,953 square kilometers (172,183 square miles) in the exclusive economic zone of the Galápagos Islands.
- According to a scientific proposal, the marine reserve expansion would help protect threatened migratory species, deter unsustainable and illegal fishing practices, and even bolster the legal Ecuadoran fishing industries.
- While the proposal has garnered both national and international support, Ecuador’s fishing sector is largely opposed to the expansion of the reserve.
A hi-tech eye in the sky lays bare Hawaiʻi’s living coral reefs
- A team of researchers used an airborne mapping technique to survey living coral distribution across the main Hawaiian archipelago.
- Hawaiʻi’s reefs are under threat due to a number of human-driven stressors, such as coastal development, pollution, fishing activities, and climate change events like marine heat waves.
- Places with high levels of live coral included West Hawaiʻi and West Maui, while Oʻahu had some of the lowest coral cover.
- This mapping process can help inform marine protection efforts and identify areas ideal for restoration, according to the research team.
Fishing fail: WTO negotiators flunk deadline to end harmful fisheries subsidies by 2020
- World Trade Organization member states missed a deadline to agree to curb harmful fisheries subsidies, part of the U.N.’s sustainable development goals.
- Exemptions for developing and least-developed countries, and rules concerning disputed waters are two major sticking points, among dozens that remain to be resolved.
- The missed deadline, on one of the first major sustainable development targets, may set a precedent for reaching future targets and raises questions about the WTO’s ability to facilitate the U.N. goals.
- Harmful subsidies fund otherwise economically impossible overfishing and incentivize illegal, unreported and unregulated (IUU) practices, contributing to the perilous state of global fish stocks.
Layers of regulations to protect European seas ‘not working,’ audit finds
- A recent report published by the European Court of Auditors (ECA) found that the European Union (EU) was not doing enough to protect and restore its oceans, despite having various policies in place to support conservation efforts.
- In particular, the ECA report found that only 1% of more than 3,000 marine protected areas (MPAs) in EU waters provided full protection to marine habitats, and that the MPAs generally failed to protect biodiversity.
- The report also found that sustainable fishing and environmental standard targets were not being met, some policies were out of date, and that EU funding was not being adequately utilized for conservation efforts.
- A recent report by the NGO Oceana on trawling activities in sensitive marine habitats in the Mediterranean provides further evidence that EU policies are not doing enough to protect its seas.
Frustration as Antarctic conservation summit fails to declare marine sanctuaries
- A proposition to establish three new marine protected areas (MPAs) in East Antarctica, the Antarctic Peninsula and the Weddell Sea was not approved at a recent meeting of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), which was held online in the last week of October.
- Conservation experts who attended the meeting reported there was limited time for negotiations, and that discussions focused more on fishing renewal authorizations and the issue of a Russian vessel suspected of illegally fishing, rather than the MPA designations and climate change action.
- On the other hand, many delegates signed a pledge of support for the formation of the three MPAs, and the Weddel Sea MPA and East Antarctica MPA gained new co-sponsors.
Guyana’s future and challenges in oil: Q&A with filmmaker Shane Thomas McMillan
- A new documentary by a German team explores Guyana’s offshore oil discoveries and environmental risks.
- The offshore natural resources found off the coast of South America include an estimated 13.6 billion barrels of oil and 32 trillion cubic feet of natural gas.
- The discoveries, which have been accumulating during the past five years, present significant challenges in protecting other natural resources put at risk by the exploitation.
‘No other choice’: Groups push to protect vast swaths of Antarctic seas
- A coalition of conservation groups is advocating for the establishment of three new marine protected areas (MPAs) in East Antarctica, the Antarctic Peninsula and the Weddell Sea, which would encompass 4 million square kilometers (1.5 million square miles) of the Southern Ocean, or 1% of the global ocean.
- These proposals will be discussed at an upcoming meeting of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), which is due to take place online because of the pandemic.
- Conservationists anticipate that China and Russia may not support these MPA proposals due to fishing interests in the region, although they are optimistic that the MPAs will eventually be approved.
Blooms driven by climate change threaten to smother marine life in Arabian Sea
- A strange single-celled organism that acts both as a plant and an animal has come to dominate wintertime algal blooms in the northern Arabian Sea.
- Winter blooms of Noctiluca scintillans, also known as the sea sparkle, have displaced microscopic algae called diatoms that form the basis of the marine food chain, a paper in Nature says.
- Scientists at Columbia University fear the outbreaks could herald massive declines in fisheries in the region, potentially impacting millions of fishers in India, Pakistan, Iran, Oman and Yemen.
- They have linked the emergence of N. scintillans blooms with the loss of ice cover in the Himalayan-Tibetan Plateau driven by climate change.
Shark fin trafficking ring busted as trade ban comes into effect in Florida
- Federal prosecutors unveiled an indictment Sept. 4 against 12 people who they allege were involved in a conspiracy to illegally ship shark fins to Hong Kong, among other crimes.
- The indictments came just weeks before Florida Governor Ron DeSantis signed a bill into law that bans the sale and possession of shark fins in the state.
- Conservationists are divided over the effectiveness of the ban, with some saying tough federal legislation is needed and others pointing to sustainable fishery management as a better solution for shark populations.
In Indonesia’s coastal villages, the plastic crisis is both homegrown and invasive
- Proper management of plastic waste is lacking in Indonesia’s coastal communities, where the use of plastics is outpacing mitigation efforts, according to a newly published study.
- The paper found that nearly 6,700 households in the Selayar and Wakatobi island chains had relatively low knowledge about plastic and how to manage it properly, while their use of it, particularly, single-use plastic packaging, was growing.
- The researchers have called for producers to take greater responsibility for managing the waste generated by their products, and for a transition to a circular economy.
- Indonesia is the second-biggest contributor of the plastic waste in the world’s oceans, behind only China.
China issues new sustainability rules for its notorious fishing fleet
- China has made the first major revisions to regulations governing its distant-water fishing fleet in 17 years.
- The new rules aim to curb illegal activity, increase transparency and improve sustainability in commercial fishing.
- As dominant nation in the global fishing industry, yet ranked worst for fishing offenses, China could have a huge positive impact through the new rules — if it enforces them, experts say.
Sharks contaminated with plastic are ‘cause for concern’
- A new study investigated microplastic ingestion in four species of demersal sharks in the North Atlantic Ocean, and found that 67% of sampled sharks contained plastic particles and fibers, pointing toward the pervasiveness of plastic in the marine environment.
- A total of 379 microplastics were found in 46 sampled sharks, with the highest number of plastics inside a single bull huss, which had 154 polypropylene fibers inside its stomach and intestines.
- Many of the plastic particles found in the sharks were fragments of synthetic cellulose, the material found in polyester clothing and hygiene products like face masks, which have become commonplace during the COVID-19 pandemic.
- The demersal sharks likely ingested the plastic through a food source, such as crustaceans, or by directly ingesting sediment from the seafloor, the study suggests.
Study: Chinese ‘dark fleets’ illegally defying sanctions by fishing in North Korean waters
- The study used a novel combination of satellite imagery to track more than 900 Chinese fishing vessels operating in North Korea in 2017, and an additional 700 in 2018.
- The vessels were harvesting Todarodes pacificus, also known as Pacific flying squid, a key staple food in the region.
- The U.N. Security Council passed sanctions on North Korea in late 2017, making any international fishing inside its borders a violation of international law.
- Unable to compete with the more technologically advanced Chinese vessels, local North Korean fishermen have been forced to make long, perilous journeys into Russian waters.
Sediment plumes from deep-sea mining could pollute vast swaths of the ocean, scientists say
- A new opinion piece suggests that deep-sea mining would generate damaging sediment plumes and noise pollution that would negatively affect the midwater column, a critical ocean ecosystem that begins 200 meters (660 feet) below the surface of the sea.
- Mining plumes will likely distribute sediment and dissolved metals across vast parts of the ocean, compromising organisms’ health and introducing heavy metals into the pelagic food chain, according to the paper.
- While deep-sea mining has not yet begun, numerous companies have contracts to explore the seabed for minerals, and the International Seabed Authority is set to release regulations governing mining in international waters sometime this year, paving the way for mining to move forward.
- The authors say research into the possible impacts of deep-sea mining has tended to focus on seafloor ecosystems but much remains unknown about the effects on midwater ecosystems.
‘Our life is plasticized’: New research shows microplastics in our food, water, air
- Microplastics, plastic pieces smaller than 5 millimeters, have become increasingly prevalent in the natural world, and a suite of studies published in the last three years, including several from 2020, shows that they’ve contaminated not only the ocean and pristine wildernesses, but the air, our food, and even our bodies.
- Past research has indicated that 5.25 trillion plastic pieces are floating in the ocean, but a new study says that there are 2.5 to 10 times more microplastics in the ocean than previously thought, while another recent study found that microplastic “hotspots” could hold 1.9 million pieces per square meter.
- Other emerging research suggests that 136,000 tons of microplastics in the ocean are being ejected into the atmosphere each year, and blowing back onto land with the sea breeze, posing a risk to human health.
- Microplastics are also present in drinking water, and edible fruits and vegetables, according to new research, which means that humans are ingesting microplastics every day.
Oil slick threatens Philippine mangrove forest recovering from earlier spill
- An explosion aboard a power barge off the Philippine island of Guimaras has spilled up to a quarter million liters of fuel oil, threatening local communities and mangrove and seagrass habitats.
- The barge operator, AC Energy Inc., says the cleanup could take two weeks; local disaster mitigation officials say more than 300 families are affected and have ordered an evacuation.
- The mangroves off Guimaras were affected by the Philippines’ biggest ever oil spill in 2006, when an oil tanker sank, spilling half a million liters of fuel and affecting 648 hectares (1,600 acres) of mangrove forests and seagrass areas, which are only now recovering.
- Officials are conducting cleanup efforts to keep the latest oil spill away from the recovering mangrove swamps.
Deep-sea mining: An environmental solution or impending catastrophe?
- A new report by the Deep Sea Mining Campaign and MiningWatch Canada examines the potential risks of seabed mining operations targeting polymetallic nodules: rock concretions that harbor minerals like manganese, nickel, cobalt and copper.
- While deep-sea mining has not started in any part of the world, 16 international mining companies have contracts to explore the seabed for minerals within the Clarion Clipperton Zone (CCZ) in the Eastern Pacific Ocean, and other companies have contracts to explore for nodules in the Indian Ocean and Western Pacific Ocean.
- The report suggests that polymetallic nodule mining would negatively impact ecosystems, biodiversity, fisheries, and the social and economic dimensions of Pacific island nations, and that this mining requires a precautionary approach. Mining companies, on the other hand, say nodule mining is less destructive than land mining, and that mining operations can benefit Pacific island nations socially and economically.
- Mining companies also say polymetallic nodule mining is necessary to provide the minerals needed for renewable energy technologies, while opponents say these minerals can be extracted from land sources, including recycled electronics.
Scientists agree on the need to protect 30% of the seas. But which 30%?
- Scientists recommend protecting at least 30% of the ocean by 2030 to safeguard biodiversity, avoid fishery collapse and build ocean resistance to climate change.
- In 2018 and 2019, representatives from the United Nations were negotiating a high seas treaty to meet this goal through a network of marine protected areas (MPAs) throughout the open ocean, but the meeting meant to finalize the treaty in March was delayed due to COVID-19.
- Two reports were presented to show how to practically protect 30% of the ocean: one from a group of researchers from University of Oxford, the University of York and Greenpeace, and the other from the University of California, Santa Barbara, and other universities and institutions.
- The two reports used different methodologies and had slightly different results, but they also showed considerable overlap in their recommendations of safeguarding certain areas of biological and ecological importance.
Economists put a price tag on living whales in Brazil: $82 billion
- Last year, a team of four economists published a report suggesting that living whales have a high market value for the services they provide in terms of ecotourism, carbon sequestration, and fishery enhancement. Each whale is worth about $2 million USD, they estimated.
- The economists, in collaboration with two conservation organizations, Instituto Baleia Jubarte and the Great Whale Conservancy, estimated that Brazil’s whale population is worth $82 billion.
- The team says it hopes the notion of valuing whales in Brazil, as well as in other coastal nations, can help protect whales from common fatalities like ship strikes, fishing gear entanglement, and deliberate hunting.
DNA detective work reveals where in the ocean shark fins came from
- A team of international researchers developed a method of using DNA analysis to trace the origins of shark fins, and to determine if vulnerable and endangered species were being trafficked.
- Sharks are highly valued for their fins, which are used in a luxury food item, shark fin soup, commonly sold in Hong Kong and China. The global trade of shark fins is responsible for killing more than 73 million sharks each year.
- Using DNA analysis, the researchers identified that scalloped hammerheads, a critically endangered species, were being fished out of the eastern Pacific Ocean between Baja California and northern Peru.
- The researchers are currently working with government agencies and NGOs to help inspectors conduct rapid in-port DNA testing on shark fins to identify species and location of origin.
In ocean biodiversity hotspots, microplastics come with the currents
- A new study has found that microplastics are falling to the seafloor, being carried by bottom currents, and accumulating at certain points in the ocean, coined as “microplastic hotspots” by the authors.
- Microplastic hotspots contain up to 1.9 million pieces of plastic per square meter, the highest concentration of plastic ever recorded on the seafloor.
- The most common microplastic found in the ocean is microfibers from textiles, which enters the ocean through domestic and industrial waste water systems.
- The study suggests that microplastics are ending up in biodiversity hotspots in the ocean, where they can easily enter and disrupt the marine ecosystem.
Satellite imagery is helping to detect plastic pollution in the ocean
- A new study illustrates how optical satellite imagery from the European Space Agency can be used to identify aggregates of floating plastic, such as bottles, bags and fishing nets, in coastal waters.
- The researchers tested their methods at four main locations — Accra, Ghana; the San Juan Islands, U.S.; Da Nang, Vietnam; and east Scotland — and reported an 86% success rate.
- It is estimated that more than 8.3 billion tons of plastic waste enter the oceans each year, threatening global ocean health.
Ocean deoxygenation could be silently killing coral reefs, scientists say
- A new perspective paper argues that ocean deoxygenation is the biggest threat to coral reef survival, perhaps even more so than warming sea temperatures and acidification.
- Oxygen in the world’s oceans has decreased by 2% since the middle of the last century, due largely to climate change, agricultural runoff and human waste.
- A growing body of work examines deoxygenation in the open ocean, but little research has been done on the effects of decreased oxygen on coastal coral reefs systems in tropical environments, and this paper begins filling that gap.
- The lead author and his colleagues are currently collecting data off the coast of Heron Island on the Great Barrier Reef to understand the effects of deoxygenation on the surrounding reefs.
Ocean optimism: Study says we can restore marine health
- A new study finds that it’s possible to repair the world’s oceans to a substantial level in three decades, as long as appropriate measures are taken to protect vulnerable marine species and habitats, rebuild damaged ecosystems, and alleviate the pressures of climate change.
- Several models of success are used to demonstrate that repairing the oceans is a realistic goal, including the positive impacts of wildlife trade and hunting regulations to protect endangered species and critical habitats.
- The biggest challenge in reinstating global ocean health is mitigating the effects of climate change, the authors say.
For nesting hawksbill turtles, this Philippine community is a sanctuary
- For centuries, hawksbill sea turtles have returned to a shoreline in the eastern Philippines to lay their eggs, even as the human community has expanded along the same stretch of beach.
- Hawksbill sea turtles’ low survival rates in the wild are caused by natural predators and, recently, exacerbated by rising sea levels. Another key threat is poaching for their meat and shells.
- Despite the lack of financial support, locals continue to look after the eggs, coming up with their own ways to protect them until the hatchlings are ready to be released back into the sea.
In race for a sustainable alternative to plastic, Indonesia bets on seaweed
- A local government initiative to revive seaweed farming off Bali comes amid growing interest in the crop’s promise to tackle environmental problems ranging from carbon emissions to plastic waste pollution.
- Cultivated at scale, seaweed can grow up to 60 times faster than land-based plants, making it an important carbon sink.
- Local startups are also exploring its potential to make bioplastic that is naturally degradable and even edible, for use in food packaging and other applications to replace plastic.
- For the new generation of seaweed farmers in Indonesia, the plant also offers revenue streams through ecotourism.
This solar-powered device aims to clean 1,000 rivers. Will it work?
- In October, Dutch nonprofit The Ocean Cleanup (TOC) unveiled a solar-powered river-cleaning device called the Interceptor.
- The organization plans to deploy the devices in 1,000 of the world’s most polluting rivers in just five years to stem the flood of plastic entering the ocean.
- Mongabay visited the prototype operating in Jakarta’s heavily polluted Cengkareng drain in February and found it stalled after a heavy rain.
- The designer of a similar device says TOC copied his company’s design and is attempting to interfere with its partnerships. A TOC representative denied the allegations and said lessons learned from the Jakarta prototype have led to adjustments to the second generation of Interceptors.
In Bali, young people lead the fight as a plastic plague threatens paradise
- The lack of a centralized waste management system in Bali, as in much of Indonesia, has led to most trash being dumped on land, rivers, and in the sea.
- Indonesia is the world’s No. 2 contributor to the plastic waste in the oceans, behind only China.
- In Bali, the fight against plastic waste is being spearheaded by local organizations, communities and youth groups, who have already convinced the local government to ban single-use plastics.
- The groups are pushing for a greater role by the government, particularly to centralize the waste collection and processing system.
Tanker identified as possible Brazil oil spill perpetrator
- The disastrous oil spill on Brazil’s northeast coast began August 30, with 116 municipalities already impacted and 6,000 tons of crude recovered so far. The oil continues to move southward and is now threatening Rio de Janeiro state. However, almost three months into the spill, the debate over its origin continues.
- Yesterday, an expert from the Federal University of Alagoas reported to Congress that the tanker responsible for the spill may be the Voyager I, which he said was off the coast of Brazil with its location transponder turned off during the period the spill would have occurred. Satellite detection of two slicks seem to implicate Voyager I.
- But other experts disagree, saying transponder evidence puts Voyager I near India during the critical late July period when the spill occurred. Since this story’s publication, Voyager I representatives have also provided evidence of the India location at the time of the spill (see box and links at end of this story).
- More than 100 ships passed through the seas near the eastern tip of Brazil between July 19 and 24. As a result, debate over the source of the oil spill is likely to continue for the foreseeable future.
Nearly three months after Brazil oil spill, origins remain uncertain
- Oil was first sighted on Brazil’s northeastern coast on August 30, with more than 4,000 tons washing up since. Authorities claim the oil didn’t come from Brazil, but rather had come from a tanker loaded with crude from Venezuela — a failed state.
- The trending theory is that the dumping was done by a “dark ship” with its location transponders intentionally turned off so as to dodge U.S. sanctions against the transport of Venezuelan oil. While “bilge dumping” could be the cause, analysts say the practice isn’t likely to have resulted in Brazil’s mass spill.
- The government initially identified one tanker as the likely perpetrator and then expanded to five possible culprits. But a new analysis of satellite data by Federal University of Alagoas researchers may have pinpointed the responsible tanker; those findings are to be presented to the Brazilian Senate on November 21.
- The Bolsonaro government has been faulted for its disaster response. It seemed unaware of Brazil’s 2013 National Contingency Plan for dealing with spills, and didn’t enact the plan until October 11. Also, the executive committee charged with implementing the plan was disbanded by the administration early in 2019.
Audio: Exploring the deep sea with biologist Diva Amon
- On today’s episode of the Mongabay Newscast, we speak with deep sea biologist Diva Amon about what we do and don’t know about biodiversity at the bottom of the ocean.
- Plans to mine the ocean floor are moving forward around the world, especially around hydrothermal vents at the bottom of the sea that create deposits of valuable metals. But given the fact that humans have explored less than 1 percent of the deep sea, it’s fair to say that we really have no idea what’s at risk.
- Amon is here to talk about the findings of a recent study she co-authored about biodiversity and research effort at deep sea vents, what got her into studying the bottom of the ocean in the first place, and two of her favorite deep sea creatures: the Dumbo octopus and the headless chicken monster.
In Indonesia, a court victory for Bali’s ban on single-use plastics
- Indonesia’s top court has rejected a challenge to a ban on single-use plastics on the island of Bali.
- The ban was proposed last December and was subsequently challenged by plastic-recycling industry, which argued it would harm the livelihoods of manufacturers, recyclers, and trash pickers.
- The ruling potentially paves the way for other local governments around Indonesia to impose their own bans on plastic.
- The country is the number two source of the plastic waste that ends up in the oceans, behind only China, and has set itself the target of reducing that waste output by 70 percent by 2025.
Southeast Asian countries pledge to tackle marine plastic waste crisis
- Member states of the Association of Southeast Asian Nations (ASEAN), including some of the biggest producers of the plastic waste in the oceans, have declared their commitment to addressing the trash crisis.
- Together with China, the ASEAN members Indonesia, the Philippines, Vietnam and Thailand account for half of the 8 million tons of plastic waste that ends up in the oceans each year.
- Any meaningful action to tackle the problem should focus on reducing the production of plastic to begin with, rather than dealing with the waste after the fact, an environmental activist says.
- A growing refusal by Southeast Asian countries to take in plastic waste from developed countries for processing could provide the impetus for action by the global community to cut back on plastic production.
Weak governance undermines South America’s ocean ecosystems
- Illegal fishing, overfishing and pollution are common problems in the waters of South America.
- For instance, Ecuadoran small-scale fishing captures at least 250,000 sharks every year, most of them apparently illegally, and 62 percent of Chile’s fisheries are overexploited or depleted.
- But the overarching problem, the one that enables the rest, is weak governance, according to experts.
- This article encapsulates a series of stories by Mongabay Latam examining the state of the sea in Chile, Peru, Colombia and Ecuador.
Indonesia oil slicks highlight weak enforcement against bilge dumping
- An environmental monitoring group has published reports saying that two ships have been pumping their waste oil out to sea, in a process known as bilge dumping, off the coast of Sumatra.
- The findings are based on a combination of satellite imagery of the slicks, which extend a total of 135 kilometers (84 miles), and tracking data from the ships.
- Activists say these findings highlight just how common bilge dumping is in Indonesian waters, and the lack of enforcement against the practice.
- Officials had not commented on the matter as of the time this story was published.
‘Plastic Soup:’ Photos and Q&A with author of new book documenting plastic pollution and solutions
- Earth’s oceans are drowning in plastic. Humans created 311 million metric tons of the stuff in 2014, and it is expected that we’ll be making four times as much by 2050 — yet only about 5 percent of plastic is currently recycled. It’s been estimated that 8 million metric tons of the plastic that goes to waste is dumped into our oceans every year — which is equivalent to a full garbage truck of plastic being dumped into the oceans every minute.
- In a series of stunning photos and informative graphics, new book Plastic Soup: An Atlas of Ocean Pollution documents the plastic pollution crisis engulfing Earth’s seas, the impacts of that pollution on wildlife and people, and initiatives that have been created to tackle the problem.
- The book, set to be published tomorrow by Island Press, was written by Michiel Roscam Abbing, a political scientist who reports on the latest scientific research around plastics for the Plastic Soup Foundation. Mongabay spoke with Abbing via email to get a sneak peek at what’s in the book, including a handful of its most compelling images and graphics.
Indigenous peoples unite in fight to heal the Salish Sea
- Indigenous communities on both sides of the U.S.-Canada border have called for a moratorium on a proposed port terminal in British Columbia and for a cumulative environmental assessment to be carried out.
- The communities fear an increase in ship traffic will be the final nail in the coffin of a local orca population that is already under severe stress.
- The Lummi Nation, on the U.S. side of the border, faced a similar fight in 2016, when they succeeded in blocking the construction of a coal port in Washington state.
Climate change is making waves stronger and putting coastlines at risk
- According to research published in the journal Nature Communications this month, the energy of ocean waves has grown over the past seven decades, which could have significant implications for coastal communities and ecosystems.
- The energy in ocean waves is transmitted from the wind. As the upper ocean has warmed, wind patterns have been affected globally, resulting in stronger ocean waves. The researchers behind the Nature Communications study say they found a long-term trend of wave power increasing globally in direct association with historical warming of the ocean surface.
- The researchers say their results show that global wave power could be used as an indicator of global warming similar to how atmospheric carbon dioxide concentration levels, global sea level rise, or global surface atmospheric temperatures are used now.
Ocean warming projected to accelerate more than four-fold over next 60 years: Study
- 2017 currently holds the record for hottest ocean temperatures, but, according to a new study, 2018 is likely to take the top spot as hottest year on record for Earth’s oceans as global warming’s impacts accelerate.
- The mean speed of ocean warming over the past 60 years, from roughly 1958 to 2017, was 5.46 zettajoules per year, according to the study. The oceans will warm at an even more rapid pace over the next 60 years, with the mean speed of ocean warming projected to be 23.78 zettajoules per year.
- If we proceed with “business as usual,” the upper ocean (above a depth of 2,000 meters) will warm by 2,020 ZetaJoules by 2081-2100, six times more than the total ocean warming recorded over the past 60 years, the researchers found. If we were to meet the emissions reductions targets that countries committed to under the Paris Climate Agreement, however, we could cut total ocean warming within that timeframe nearly in half to about 1,037 zettajoules.
Women in small-island states exposed to high levels of mercury: study
- Tests of hair samples from hundreds of women in small-island countries and territories found 75 percent had mercury levels high enough to cause fetal neurological damage.
- Nearly 60 percent of the women had mercury levels exceeding a threshold beyond which brain damage, IQ loss, and kidney and cardiovascular damage can occur.
- The report attributed the mercury pollution in fisheries in these regions to air emissions of the toxic heavy metal emanating from coal-fired power plants and artisanal gold mining.
- The researchers have called for a complete ban on the trade in and use of mercury, and urged a transition away from coal power to renewables.
Plastic trash from the ‘sachet economy’ chokes the Philippines’ seas
- The Philippines generates an enormous amount of trash and is the third worst ocean plastic polluter in the world, according to a 2015 study in the journal Science.
- The trash is piling up on land, clogging coastlines, spilling into the sea, and traveling to remote corners of the globe as the country fails to meet targets for improved waste management that it signed into law 18 years ago.
- The central government claims it’s done all it can, and that the onus is on local governments and the Philippine people to solve the problem.
- But environmental advocates disagree, saying the government could do more, including pressuring multinational corporations to change how they package their products.
Deep reefs were not spared by 2016 mass bleaching event on Great Barrier Reef
- New research finds that the mass bleaching event that led to the death of 30 percent of shallow-water corals on the Great Barrier Reef in 2016 also had a substantial impact on deep reefs.
- Occurring at depths lower than 30 to 40 meters below the surface of the sea, deep coral reefs, also known as mesophotic reefs, were previously thought to be “ecological refuges from mass bleaching” thanks to cold water rising up from deeper in the ocean, according to a study published in the journal Nature Communications this month.
- But researchers determined that deep reefs’ ability to offer “ecological refuge” to coral has some important limitations, and that both shallow and deep reefs are at risk of mass bleaching in the future.
The search for survivors in a post-nuclear reefscape
- The United States tested its largest thermonuclear bomb in 1954 over Bikini Atoll in the Marshall Islands, generating radioactive fallout downwind, including over remote Rongelap Atoll.
- We surveyed protected reefs of Rongelap and neighboring Ailinginae Atoll, finding extremely variable coral condition and widespread evidence of recent ocean warming.
- Variation in reef condition underscored an increasing need to assist diver-based surveys with improved satellite and aircraft imaging to assess the health of the coral reefs.
- Climate change mitigation is paramount to coral reef survival, as increasing ocean temperature could trump earlier nuclear radiation as a driver of reef degradation in the Marshall Islands.
Indonesia, a top plastic polluter, mobilizes 20,000 citizens to clean up the mess
- On a Sunday last August, thousands of Indonesians gathered at 76 locations across the Southeast Asian country to participate in a massive cleanup of plastic trash.
- Government officials and NGO activists hoped the event would raise awareness about plastic pollution, especially among the youth.
- Indonesia is the world’s second-largest plastic polluter, with 10 billion plastic bags in the country alone dumped into the environment each year.
Shark fisheries hunting dolphins, other marine mammals as bait: Study
- Global shark fisheries have for decades engaged in the deliberate catch of dolphins, seals and other marine mammals to use as bait for sharks, a new study has found.
- The researchers found the practice picked up when prices for shark fin, a prized delicacy in Chinese cuisine, went up from the late 1990s onward.
- The researchers have warned that the targeting of these species could hit unsustainable levels, and have called for more studies into the species in question as well as better enforcement of existing law protecting marine mammals.
Government subsidies serving to prop up destructive high-seas fishing: study
- More than half of fisheries on the world’s high seas would be running a loss without the billions of dollars in government subsidies that keep the ecologically destructive industry afloat, a recent study suggests.
- The researchers described the annual subsidies as being far in excess of the net economic benefit from fishing in these international waters.
- They called for greater transparency by governments and substantial reforms of high-seas fisheries in a bid to improve the management of the industry they labeled as ecologically and economically unsustainable.
Audio: Sylvia Earle on why we must act now to save the oceans
- On today’s episode, renowned marine biologist Sylvia Earle joins us for an in-depth conversation about marine conservation.
- Legendary oceanographer, marine biologist, and environmentalist Sylvia Earle, sometimes known as “Her Deepness” or “The Sturgeon General,” is a National Geographic Explorer-in-Residence and former chief scientist at the US National Oceanic and Atmospheric Administration (NOAA). A documentary film about her work called Mission Blue won a 2015 News & Documentary Emmy.
- She joins us today to discuss how effective marine protected areas are at conserving the oceans and their inhabitants, her Hope Spots program that is identifying some of the most valuable marine environments on the planet, and the latest advances in marine conservation that she is most hopeful about.
Fish tales: Six amazing journeys to celebrate World Fish Migration Day
- April 21 marks World Fish Migration Day, a biennial event that strives to foster appreciation for the importance of migratory fish and their aquatic swimways.
- Healthy fish stocks with unimpeded migrations are essential to feeding humankind and maintaining the ecological equilibrium of the world’s waters.
- But fish migrations are being increasingly stressed by a worldwide boom in the building of dams that block their essential riverine passage, pollution, overfishing, lowering of water levels for agriculture and drinking water, and climate change.
- Here are six notable fish migrations to consider on this day.
Cambodia creates its first marine national park where pirate fishers prowl
- In February, Cambodia announced the establishment of its very first marine national park, covering 524 square kilometers (202 square miles) in the Gulf of Thailand.
- Koh Rong Marine National Park takes in the seven islands of the Koh Rong archipelago and the web of coral, seagrass and mangrove ecosystems around them.
- Wedged between Thailand and Vietnam, Cambodia’s tiny territorial waters have long been plundered by illegal fishing gangs feeding an ever-rising demand for seafood.
- But the declaration of the new park does nothing to protect the environment, at least in the short term, with no new patrols of the heavily fished waters until next year and a $2 billion island development plan allowed to continue unhindered.
Plastic not so fantastic for Bali’s iconic manta rays
- Two recent videos from a diving site in Bali known for its manta rays have garnered global attention for highlighting the dire state of plastic pollution in Indonesia’s waters.
- While the local government and volunteers have made efforts to clean up the garbage, a lack of proper planning and poor awareness of waste disposal means huge volumes of trash continue to be dumped into the ocean daily.
- Indonesia produces around 130,000 tons of plastic and solid waste every day, and is the second-largest plastic polluter in the world, behind China.
Global warming, pollution supersize the oceans’ oxygen-depleted dead zones
- Large areas of the world’s oceans are rapidly losing oxygen as a result of global warming and pollution, threatening marine ecosystems and the hundreds of millions of people who depend on them, according to a new study.
- The scientists expect deoxygenation to increase well beyond these so-called dead zones as long as human-driven global warming continues.
- Despite the grim outlook for the oceans, the researchers suggest that cutting fossil fuel use and protecting vulnerable marine life could tackle the problem.
Building a refuge where trawlers now ravage Cambodia’s marine life
- In Cambodia’s Kep Archipelago, fleets of trawlers dragging weighted, electrified nets have reduced the area’s once sprawling seagrass meadows to a sludgy underwater wasteland and sent fisheries into a tailspin.
- Here and around the world, seagrass meadows are in decline. But these critical habitats serve as nurseries and feeding grounds for many marine organisms, as well as bulwarks against climate change and ocean acidification by capturing carbon dioxide.
- In the Kep Archipelago a small NGO is working to establish a marine refuge that will keep the trawlers at bay so seagrass meadows can recover and depleted fish stocks can return to life.
First vaquita ‘rescued’ in bid to save the porpoise from extinction
- A project to save a small, critically endangered porpoise called the vaquita in the Gulf of California succeeded in capturing a 6-month-old calf in mid-October.
- Veterinarians noticed signs of stress, so they made the decision to release it back into the wild, rather than keep it in a sea pen.
- The project’s leaders are heartened by the experience and hope to round up more vaquita to keep them safe from the still-present threat of gillnet entanglement in the northern Sea of Cortez.
Field Notes: Pond turtle studies could help sea turtles survive toxic algal blooms
- Harmful algal blooms (HABs), dubbed “red tides,” occur worldwide. When ingested, tiny, toxin-producing algae threaten marine and human life. These events — sometimes natural, but often human-induced — now happen annually on the U.S. Gulf Coast and kill endangered turtle species.
- Physiologist Sarah Milton, at Florida Atlantic University, researches the effect of HABs on freshwater turtles to improve treatment for endangered sea turtles that are rescued from toxin-filled waters.
- Milton found that pond turtles tolerate far more algal toxin than similar sized mammals can survive — resistance possibly rooted in their ability to dive, living without oxygen for months. Understanding this ability could help sickened sea turtles rescued during harmful algal outbreaks.
- Understanding the cellular mechanisms that allow pond turtles to maintain brain and body function during anoxic conditions could also help scientists improve outcomes for people who have suffered oxygen-deprivation events, such as stroke, which trigger irreversible brain cell death.
Vaquita survival hinges on stopping international swim bladder trade
- Recent investigations by the Elephant Action League and WWF have uncovered the complicated trade in fish swim bladders from the Gulf of California that is pushing a porpoise known as the vaquita toward extinction.
- A two-year-old gillnet ban so far has not yet stemmed the declining numbers of vaquita, which are down 50 percent since 2015 and 90 percent since 2011.
- Not more than 30 vaquita remain in the wild, making it the most endangered cetacean on the planet.
- The swim bladders can sell for as much as $20,000 per kilogram.
Officials, Greenpeace nab four boats for illegally fishing near Guinea-Bissau
- Between March 21-24, Greenpeace and officials from Guinea-Bissau’s Fisheries Surveillance Department sent four boats into the port of Bissau, where the companies that own the boats face sanctions for unpaid fines for past violations, improperly indicating the names of vessels, and what’s known as ‘illegal transshipment.’
- Two of the boats were owned by a Spanish company, and the other two were owned by companies based in China, which has by far the most ‘distant-water fishing’ boats at sea of any country.
- The UN Food and Agriculture Organization found that, in 2009, the fisheries off West Africa had the highest rates of overexploitation in the world.
UN launches campaign to take out ocean trash
- UNEP launched a global campaign last month aimed at eliminating two of the chief sources of ocean trash by 2022: microplastics frequently used in cosmetics and single-use plastic products like shopping bags.
- Ten different countries had already joined the campaign at the time of its launch, according to UNEP. Indonesia, for instance, pledged to reduce marine litter by 70 percent by 2025, while Uruguay announced a tax on single-use plastic bags slated to take effect later this year.
- It’s estimated that more than 600 marine species are impacted by marine litter in the oceans, and that 15 percent of those species that are harmed by ingesting or becoming entangled in ocean trash are already endangered.
The salmon crisis in Chile’s Chiloé Island
- The salmon industry says the crisis was caused by the El Niño weather phenomenon.
- Greenpeace pointed to industrial salmon fishers, who it says dumped 9,000 tons of dead fish into the sea shortly before the crisis.
- Preliminary reports from a government-sponsored research mission confirm that weather conditions were conducive to forming a “red tide,” and say salmon dumping did not cause the fish kills.
- Losses for fishers persist. Many have turned to alternate sources of income.
Ocean warming is “greatest hidden challenge of our generation,” according to IUCN
- A report released by the International Union for Conservation of Nature (IUCN) on Monday finds that the effects of global warming on oceans are not a concern for the future — fish, marine mammals, seabirds, and even humans are already being impacted by rising temperatures in oceanic waters.
- More than 93 percent of the global warming that has resulted from human activities since the 1970s was absorbed by Earth’s oceans, and data show a “sustained and accelerating upward trend in ocean warming,” according to the report.
- Entire groups of species such as plankton, fish, jellyfish, turtles and seabirds have been driven up to 10 degrees of latitude towards the Earth’s poles as they seek to keep within the environmental conditions to which they’re adapted.
Should you be concerned about plastic and other human debris in your seafood?
- A study published in the journal Scientific Reports last September noted that marine debris is found in just about every ocean habitat, from the open ocean and the deep seas to coral reefs, estuaries, and shallow bays.
- Ocean trash has also been found in hundreds of marine wildlife species, including fish and bivalve species like tuna, swordfish, mussels, and oysters — the types of species you might be more familiar with as “seafood.”
- There are several ways this can affect human health: marine debris can cause physical harm such as inflammation and lacerations of tissues in the gastrointestinal tract of humans who ingest it via seafood, for instance, while consuming marine debris can also increase the levels of hazardous chemicals in humans.
How do we keep the oceans from becoming the world’s plastic trash can?
- Experts believe that 5-14 million tons of plastic enter the oceans every year.
- According to a report published in Science, Vietnam, Thailand, the Philippines, China and Indonesia account for up to 60 percent of global waste leakage annually.
- A recent report from the Ocean Conservancy offers some comprehensive solutions to reduce net plastics disposal in these five biggest sources of ocean plastic pollution.
International treaty targeting illegal fishing takes effect
- Illegal fishing puts the world’s already-strained fish stocks at risk, capturing as much as 26 million metric tons of fish valued at up to $23 billion each year.
- The treaty, known officially as the Agreement on Port State Measures to Prevent, Deter, and Eliminate Illegal, Unreported, and Unregulated Fishing, will enter into force this Sunday, June 5.
- It represents an international effort to shore up the global seafood supply by preventing vessels from landing illegal catches.
The dark side of China’s foreign fishing boom
- China is the largest consumer, producer and exporter of fish, with a distant-water fleet operating in 93 countries.
- But Chinese boats are routinely getting into scuffles with foreign authorities for fishing illegally in their waters.
- Analysts say government subsidies and poor oversight promote overfishing and rogue activity.
Scientists puzzled by slowing of Atlantic conveyor belt, warn of abrupt climate change
- Limited ocean measurements have shown that “the Atlantic conveyor belt” is far more capricious than models have previously suggested.
- From 2009 to 2010, the average strength of key ocean currents in the North Atlantic dropped by about 30 percent, causing warmer waters to remain in the tropics rather than being carried northward.
- “The consequences included an unusually harsh European winter, a strong Atlantic Basin hurricane season, and — because a strong AMOC keeps water away from land — an extreme sea level rise of nearly 13 centimeters along the North American coast north of New York City,” according to Eric Hand, author of a Science article published this month.
First round of UN negotiations to regulate high seas fishing concludes
- About 40 percent of commercial fish species spend time on the high seas, where they are caught with few limitations. Experts fear they are being severely depleted.
- Today countries conclude the first round of negotiations at the United Nations in New York City toward a new treaty aimed at conserve biodiversity on the high seas.
- The treaty is expected to be finalized by 2019, at the earliest.
Scientists say we need to be far more ambitious about protecting oceans
- Under the UN Convention on Biological Diversity, 168 signatory countries committed to the creation of marine protected areas encompassing 10 percent of the world’s oceans by 2020.
- Given that just over two percent of the sea currently enjoys some sort of protected status, 10 percent is still a politically ambitious goal, 24 years after it was first adopted.
- But University of York researchers say that even that is not enough to ensure the health of the ocean ecosystem and all of the services it provides to humanity.
Global coral bleaching event hits Australia’s Great Barrier Reef hard
- In October, the U.S. National Oceanic and Atmospheric Administration announced that the third —and worst — global coral bleaching event in history was underway, caused by record high sea temperatures due to a strong El Niño combined with global warming.
- Australian scientists surveyed the Great Barrier Reef for damage in March, ranking the bleaching event at the most severe level, with up to 60 percent of corals affected in some places.
- Sea temperatures are starting to drop with the onset of fall, which means the worst of the bleaching is over. But researchers predict heavy loss of coral and an uncertain recovery.
- Critics say measures the government is taking to respond to the current bleaching and to protect the reef are inadequate and fail to address the root cause: climate change.
Indonesia: keep cracking down on illegal fishing, but don’t forget about conservation
- Last year saw Indonesia launch a high-profile war on illegal, unreported and unregulated fishing, and the sector has dramatically improved.
- The U.S. government and Indonesia have committed to protecting the archipelago’s marine resources and improving the sustainability of its fishing industry.
- But establishing marine protected areas is only half the story – surveys suggest that many of Indonesia’s marine parks are lacking the robust management and enforcement that they need.
Marine protected areas are helping the Mesoamerican Reef recover
- Coral cover in the Mesoamerican Reef is up 10 to 16 percent since 2006, according to a report by the Healthy Reef Initiative.
- Fully protected areas were found to have 10 times more biomass of important commercial fish species like snapper and grouper than regions with little or no protection.
- Only 7 percent of the protected marine areas in the Mesoamerican Reef are under “full protection,” per the report.
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