location: Atlantic Ocean

location: Atlantic Ocean

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‘Shifting baselines’ in Cabo Verde after 50 years of declining fish stocks
- In Cabo Verde, as in many low-income countries in Africa, the historical record of fish catch is incomplete, making it hard to know what’s been lost and what’s required to fully rebuild.
- In a new study, researchers interviewed fish workers to understand how catches have changed over the last five decades, finding evidence of a major decline in volume of catch and maximum size of key species.
- The study also shows that young fishers and fishmongers don’t fully realize the scale of the loss — a case of what scientists call “shifting baselines.”
- Fishing communities on the West African mainland tell a similar story of decline, pointing to the urgency of centering local knowledge when devising fisheries management and conservation policies.

Conservationists see progress for swordfish, problems for sharks at Atlantic fisheries summit
- The International Commission for the Conservation of Atlantic Tunas (ICCAT), which manages a wide range of fish stocks across the entire Atlantic Ocean and adjacent seas, held its annual meeting in Cyprus Nov. 11-18.
- The parties adopted a “harvest strategy” for North Atlantic swordfish and developed harvest strategies for a number of other species that could be adopted in coming years, drawing praise from conservationists.
- They also came to an agreement on tropical tuna management after years of wrangling; the agreement included the loosening of rules governing the use of controversial fish aggregating devices that can lead to overfishing, in a concession to European industry interests.
- Dozens of member nations supported a rule that would have effectively banned shark finning, but Japan and China blocked the effort.

Leaders fail to address overfishing near Europe at ‘fraught’ international meeting
- The North-East Atlantic Fisheries Commission (NEAFC) held its annual meeting in London Nov. 12-15.
- NEAFC is a regional fisheries management organization, a multilateral body that controls fishing in international waters; its remit includes certain fish stocks in the Northeast Atlantic, near Europe.
- Among these, mackerel and herring have been overfished for years, yet NEAFC member countries did nothing to address the issue at the meeting.
- NGO observers have criticized NEAFC and its members for failing to address governance issues they say led to the overexploitation.

Controversial US marine geoengineering test delayed until next year
- The first-ever field test of ocean alkalinity enhancement in the United States was pushed back to 2025 due to shipping issues. But the geoengineering experiment has also run into public opposition from local environmentalists, commercial fishers and others.
- The test would dump sodium hydroxide (commonly called lye) off the New England coast to study its dispersal as a potential tool for sequestering CO₂.
- Opponents allege this small-scale geoengineering test could harm local wildlife, but researchers say the material will disperse within minutes.
- The scientists say they will also continue to reach out to local communities to alleviate fears over the study.

In northern Spain, climate change is killing shellfish — and women’s livelihoods
- In Galicia in northwestern Spain, shellfish harvesting is traditionally women’s work.
- But the clams and cockles the shellfish pickers’ livelihoods depend on are increasingly harder to come by.
- Extreme weather events made more frequent and intense by climate change, including heat waves and torrential rain, threaten the four main shellfish species harvested in the region, and with them, the tradition that has been passed down through generations of women.

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.

It will take 880 years to achieve UN ocean conservation goals, at this rate (commentary)
- Indigenous conservationist Angelo Villagomez will speak at the Our Ocean conference, one of the largest and highest profile conferences of its kind, this week in Athens, Greece.
- He plans to say that ocean conservation has lost momentum toward protecting 30% of the ocean by 2030 and that a lot more needs to be done to address the human dimensions of conservation, including guaranteeing access rights, equity, and justice.
- “At this rate, raising the area of global ocean protection from 8% to 30% will take an additional 880 years,” he argues in a new op-ed.
- This post is a commentary. The views expressed are those of the author, not necessarily Mongabay.

Congo’s waters are hotspot for endangered sharks & rays, reveals data from artisanal fishers
- A new shark census off the coast of the Republic of the Congo relied on hard-earned trust between researchers and artisanal fishermen.
- The team found endangered sharks and rays on potential nursery grounds, including juveniles and two species thought to be gone from the region.
- The authors recommend conservation strategies to protect endangered species without harming the livelihoods of Congolese fishermen.

North Atlantic orcas reveal the troubling persistence of toxic ocean pollutants
- As the top predators in the ocean, killer whales suffer from the magnifying level of pollutants that build up in the marine food web.
- Scientists found that North Atlantic orcas feeding on marine mammals carry significantly higher levels of pollutants than orcas that eat fish.
- Levels of polychlorinated biphenyls in the orcas’ blubber are ten times higher than the toxic threshold for these dangerous household chemicals.

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.

Dominica set to open world’s first reserve centered around sperm whales
- The tiny island nation of Dominica has announced that it will create a 788-square-kilometer (304-square-mile) reserve to protect endangered sperm whales.
- Most of the sperm whales that live off the coast of Dominica are part of the Eastern Caribbean Clan, which currently has a population of fewer than 300 individuals.
- Sperm whales in this region are threatened by fishing gear entanglement, pollution, boat strikes, and even tourism.
- The new reserve aims to protect whales by restricting activities such as fishing, vessel traffic and tourism, while not entirely banning them.

Fisheries managers should act to protect swordfish this month (commentary)
- Between 1960 and 1996 swordfish declined more than 65%, the average size of fish caught shrank, and the species became severely overfished in the North Atlantic.
- A campaign led by consumer groups and chefs helped convince regulators like ICCAT to take action, to the point that the fishery is now considered ‘recovered.’
- Top chef and restaurateur Rick Moonen’s new op-ed argues that it’s time for a next step: “Now ICCAT has another opportunity to improve the long-term health of the swordfish population. This November, ICCAT members can adopt a new management approach for the stock and lock in sustainable fishing,” he says.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Climate change threatens the North Atlantic’s currents, ecosystems and stability (analysis)
- The Atlantic Meridional Overturning Circulation (AMOC) is a vital component of the Earth’s global ocean circulation, and encompasses a network of currents within the Atlantic Ocean.
- Current research shows a possible slowing or stopping of the AMOC due to climate change, with direct and major impacts on marine ecosystems, weather variability, and food security in North America and Europe, and by extension the rest of the world.
- “A significant and sustained weakening of the AMOC has the potential to lead to its outright collapse, which would have far-reaching and mostly irreversible effects on marine and terrestrial ecosystems,” a new analysis explains.
- This post is an analysis. The views expressed are those of the author, not necessarily of Mongabay.

As population ‘flattens,’ North Atlantic right whales remain at risk
- A new population estimate for North Atlantic right whales found about 356 individuals left in 2022, which suggests the population trend is “flattening.”
- In 2021, scientists previously estimated there were 340 right whales, although this number was later revised to 364 to account for several newborn calves.
- Despite there not being a notable difference between the population estimates in 2021 and 2022, scientists say North Atlantic right whales are still in danger of going extinct and that urgent measures need to be put into place to protect them.

Iceland’s whaling paradox (commentary)
- As Iceland’s latest whaling season comes to a close, a heated debate continues over the ethics and sustainability of the country’s policy on these marine mammals.
- Filmmaker and activist Micah Garen — who co-directed the documentary “The Last Whaling Station” — shares his thoughts on what may be the nation’s last whaling season.
- “The paradox of whaling is the inherent contradiction between a utilitarian and Kantian world view. If you believe your choices matter, then ending whaling now is the only ethical, moral and philosophical choice we can make,” he argues.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

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.

To protect the oceans, we must map them (commentary)
- About 80% of our oceans remain “unmapped, unobserved, and unexplored,” according to NOAA.
- Technologies like un-crewed marine drones, high-resolution satellites, and remote operating vehicles are now being paired with modern digital mapping techniques to reveal critical new insights about the oceans.
- “Considering we’ve barely mapped a quarter of [the oceans] so far, imagine what we could know, what we could prepare for, if every inch was mapped,” a new op-ed suggests.
- This article is a commentary. The views expressed are those of the author, not necessarily Mongabay.

Seafloor life abounds around hydrothermal vents hot enough to melt lead
- A team of international scientists on board the RV Falkor (too), a research vessel operated by the Schmidt Ocean Institute, recently discovered active hydrothermal vents on the Mid-Atlantic Ridge.
- This discovery was the first in more than 40 years for a 700-kilometer (423-mile) stretch of the Mid-Atlantic Ridge.
- Researchers say hydrothermal vents help regulate global ocean chemistry, support complex ecosystems, and store vast amounts of marine genetic resources.
- However, there is already interest in mining the sulfide deposits of hydrothermal vent systems for their commercially valuable minerals.

Good fisheries management, if enforced, can help sharks and rays recover
- Effective fisheries management, strong regulations, enforcement, and monitoring can help conserve sharks and rays, according to new research.
- Researchers found that some shark populations in the northwest Atlantic recovered after the U.S. implemented a management plan in 1993, despite ongoing fishing, while populations in areas without sufficient management declined.
- A previous study found that overfishing threatens one-third of sharks, rays and chimeras with extinction, making them the second-most endangered vertebrate group, after amphibians.

More than half of reef sharks and rays threatened with extinction, study shows
- More than half of known species of coral reef sharks and rays are already threatened with extinction, mostly because of overfishing, according to new research.
- The researchers reported that population trends were declining for 94 coral reef shark and ray species; of the two groups, rays were more threatened than sharks.
- Reef sharks and rays are typically caught for human consumption, and to a lesser extent for use in apparel or accessories, in aquarium displays, as food for domestic animals, and in traditional medicine.
- The study calls for urgent urgent measures to improve regional fisheries and marine protected areas management.

‘It was a shark operation’: Q&A with Indonesian crew abused on Chinese shark-finning boat
- Rusnata was one of more than 150 Indonesian deckhands repatriated from the various vessels operated by China’s Dalian Ocean Fishing in 2020.
- Previous reporting by Mongabay revealed widespread and systematic abuses suffered by workers across the DOF fleet, culminating in the deaths of at least seven Indonesian crew members.
- In a series of interviews with Mongabay, Rusnata described his own ordeal in detail, including confirming reports that DOF tuna-fishing vessels were deliberately going after sharks and finning the animals.
- He also describes a lack of care for the Indonesian workers by virtually everyone who knew of their plight, from the Indonesian agents who recruited them to port officials in China.

A new tool to peer into fishing networks: Q&A with Austin Brush of C4ADS
- Washington, D.C.-based think tank C4ADS is launching Triton, a web tool to visually display the corporate structures behind fishing vessels.
- The initial cache of data focuses on the industrial fishing fleets of five key flag states: China, Taiwan, South Korea, Spain, and Japan, which together account for most high-seas fishing.
- Understanding who owns these vessels ultimately reveals the factors driving a vessel’s movements at sea and fishing activity, according to C4ADS analyst Austin Brush.

How Mitsubishi vacuumed up tuna from a rogue Chinese fishing fleet
- Last week, Mongabay revealed a massive illegal shark finning operation across the fleet of a major Chinese tuna fishing firm.
- The company, Dalian Ocean Fishing, mainly serves the Japanese market. Most of its tuna has gone to Japan’s Mitsubishi Corporation and its seafood trading arm, Toyo Reizo.
- While the general outlines of their partnership are well-documented, tracing specific tuna flows from individual fishing boats to Mitsubishi’s supply chain is impeded by the murky nature of the supply chain.
- Experts say this lack of transparency must be solved in order to prevent illegal fishing and labor abuses at sea.

‘There are solutions to these abuses’: Q&A with Steve Trent on how China can rein in illegal fishing
- Earlier this week, Mongabay published an article uncovering a massive illegal shark finning scheme across the fleet of one of China’s largest tuna companies, Dalian Ocean Fishing.
- China has the world’s biggest fishing fleet, but oversight of the sector is lax, with many countries’ boats routinely found to be engaging in illegal and destructive practices, especially in international waters.
- Mongabay spoke with Steve Trent, the head of the Environmental Justice Foundation, which has also investigated the fishing industry, about DOF’s shark finning scheme and how China can better monitor its vessels.

Exclusive: Shark finning rampant across Chinese tuna firm’s fleet
- Dalian Ocean Fishing used banned gear to deliberately catch and illegally cut the fins off of huge numbers of sharks in international waters, Mongabay has found.
- Just five of the company’s longline boats harvested roughly 5.1 metric tons of dried shark fin in the western Pacific Ocean in 2019. That equates to a larger estimated shark catch than what China reported for the nation’s entire longline fleet in the same time and place.
- The findings are based on dozens of interviews with men who worked throughout the company’s fleet of some 35 longline boats. A previous investigation by Mongabay and its partners uncovered widespread abuse of crew across the same firm’s vessels.
- Campaigners said Dalian Ocean Fishing’s newly uncovered practices were a “disaster” for shark conservation efforts.

Wrong trend for right whales amid ‘devastating’ population decline
- A newly released estimate suggests that only 340 critically endangered North Atlantic right whales remained as of 2021, a 2.3% decline from 2020, when the population numbered around 348.
- Fewer calves have been born in 2022 so far, corroborating research that suggests that North Atlantic right whale species are becoming less capable of reproducing.
- No adult mortalities have been recorded in 2022, but experts say that only about a third of whale deaths are recorded.

Greenland shark, world’s longest-living vertebrate, gets long-awaited protection
- In September, the Northwest Atlantic Fisheries Organization (NAFO), an intergovernmental organization that manages fisheries, prohibited the retention of Greenland sharks in international waters.
- This ban would apply to the intentional catching of Greenland sharks as well as the retention of the species as bycatch.
- However, bycatch exceptions could be made if countries prohibit the discarding of fish.
- Greenland sharks are known to be the longest-living vertebrate in the world, reaching ages of between 270 and 500 years.

U.S. charts course for adopting ropeless fishing to reduce whale deaths
- The National Oceanic and Atmospheric Administration (NOAA) has published a report laying out a strategy to allow the use of “ropeless” or “on-demand” fishing gear off the U.S. East Coast with the goal of reducing entanglements of the critically endangered North Atlantic right whale.
- The gear uses acoustic signals to locate and retrieve gear, reducing the amount of time that vertical lines are present in the water column, where they can ensnare right whales and other types of marine life.
- Right whale numbers in the North Atlantic have declined precipitously in the past decade, as collisions with ships and entanglements have killed individuals and hampered the species’ ability to reproduce.
- NOAA’s Ropeless Roadmap estimates that on-demand fishing gear can substantially diminish the risk to right whales, while allowing economically and culturally important fisheries of the northeastern U.S. to continue.

Where do the guitarfish go? Scientists and fishers team up to find out
- In late March and early April of this year, a team of researchers and local fishers caught, sampled and released more than 50 sharks and rays in the Bijagós Archipelago of Guinea-Bissau, including several threatened species.
- A first for conservation, researchers tagged members of a critically endangered ray species, the blackchin guitarfish (Glaucostegus cemiculus), with satellite transmitters.
- Team leader Guido Leurs says the research will provide crucial information for policymakers to better protect sharks and rays in Guinea-Bissau.
- Fisheries management within the archipelago, which spans 12,950 square kilometers (5,000 square miles) and 88 islands, is a challenge for the West African nation.

Noise pollution spooks whales the way predators would, study finds
- Whales appear to react to human-made noise in the ocean, such as naval sonar, in a similar way to which they respond to the sounds of their predators like killer whales, according to recent research.
- The authors of the study played the sounds of sonar and killer whales when whales from four species were present.
- The whales responded by breaking off their feeding forays, leading scientists to conclude that noise pollution in the ocean could leave them weaker and more vulnerable to predation.
- The researchers also suggest that marine mammals in the Arctic may be especially at risk as climate change alters their environment in ways that may make them more vulnerable.

Can we save the spiky yellow woodlouse, one of the most endangered isopods? (commentary)
- Saint Helena Island’s spiky yellow woodlouse is a striking, critically endangered isopod that lives on tree ferns and black cabbage trees, high up in the peaks of Saint Helena’s cloud forests.
- The flax industry destroyed and fragmented most of the forests that the woodlouse depends on. Invasive species and climate change continue to affect them.
- The population of spiky yellow woodlouse is estimated to be at 980 individuals, so the Saint Helena National Trust is working to restore the forests on the island by clearing away the flax plants that were left behind and replanting more native flora.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

‘There’s hope’ for North Atlantic right whales: Q&A with filmmaker Nadine Pequeneza
- The documentary “Last of the Right Whales” seeks to bring the plight of these gentle giants to audiences that are largely unaware of how close to extinction the species is today.
- North Atlantic right whales (Eubalaena glacialis) were historically decimated by hunting, but the biggest threats to the species today are ship strikes and entanglement in fishing gear.
- There are an estimated 336 of the animals remaining, more than 80% of which have experienced entanglement in ropes tethered to fishing gear on the sea floor.
- Documentary director Nadine Pequeneza spoke with Mongabay about bringing these threats to public attention, the importance of engaging with and not vilifying fishers, and why she holds out hope for the whale’s future.

El Niño takes a toll on southern right whales in the Atlantic Ocean
- Southern right whale populations near Argentina have suffered surprising losses during recent El Niño years.
- Intense warmings in 1997-98 and 2015-16 each killed 4 to 5 percent of right whales in the southwest Atlantic Ocean, researchers estimate.
- If El Niño events worsen, models suggest the encouraging recovery of southern right whales could stall or even reverse.

Geneticists have identified new groups of tiger sharks to protect
- New genetic studies revealed at least two distinct groups of tiger sharks in the Atlantic and Indo-Pacific ocean basins, plus a third smaller population near Hawaii.
- These results are a mild surprise, due to the versatility and long swimming ranges of tiger sharks.
- Fisheries managers should take precautions to protect these distinct genetic populations, researchers urge.

Advocates welcome halt to shortfin mako shark fishing, call for longer ban
- Nations have agreed to effectively ban the fishing of endangered shortfin mako sharks in the North Atlantic from 2022 to 2023.
- Conservationists say the retention ban — which means fishers will not be allowed to land the sharks, even those caught accidentally — is a positive step, but that it’s too short to adequately help the species recover.
- It’s estimated that shortfin mako shark populations in the North Atlantic will decline by 60% over the next decade.

From the ocean floor, a startup livestreams the rise of coral cities
- A Portuguese company that was forged in Southeast Asia is building an underwater city for coral in Sultan Iskandar Marine Park, Malaysia, made from food waste such as rice husks.
- It is also building a pilot project ultimately leading to a 72 km2 (28 mi2) engineered reef off Comporta, Portugal, which will cost approximately $226-556 million.
- Each stackable underwater city contains a Bluboxx, a console fitted with sensors to measure the salinity, temperature and acidity of the sea, with the data then livestreamed to scientists and shared with governments.
- If no action is taken to protect coral reefs, it is believed that 90% will be extinct by 2050, according to the U.N.’s Intergovernmental Panel on Climate Change.

Deep seabed mining is risky. If something goes wrong, who will pay for it?
- Citizens of countries that sponsor deep-sea mining firms have written to several governments and the International Seabed Authority expressing concern that their nations will struggle to control the companies and may be liable for damages to the ocean as a result.
- Liability is a central issue in the embryonic and risky deep-sea mining industry, because the company that will likely be the first to mine the ocean floor — DeepGreen/The Metals Company — depends on sponsorships from small Pacific island states whose collective GDP is a third its valuation.
- Mining will likely cause widespread damage, scientists say, but the legal definition of environmental damage when it comes to deep-sea mining has yet to be determined.

Two threatened whale groups had a mini baby boom, but not because of lockdown
- Two rare whale groups — southern resident killer whales in the Pacific Northwest, and North Atlantic right whales — have had mini baby booms since the start of the pandemic, raising hopes about their survival prospects.
- But experts say a reduction in human activity during this period isn’t the cause, and that the underlying threats pushing these whales toward extinction still persist.
- North Atlantic right whales are threatened by fishing gear entanglement and ship strikes, while the southern resident killer whales have seen stocks of their favorite prey, the Chinook salmon, decline.
- Experts say that policies to protect the whales, including regulating shipping, closing fisheries and restricting certain types of gear, are not keeping pace with whales’ changing dynamics, and that changes might need to be applied throughout their range.

‘Antithetical to science’: When deep-sea research meets mining interests
- The high cost of studying deep-sea ecosystems means that many scientists have to rely on funding and access provided by companies seeking to exploit resources on the ocean floor.
- More than half of the scientists in the small, highly specialized deep-sea biology community have worked with governments and mining companies to do baseline research, according to one biologist.
- But as with the case of industries like tobacco and pharmaceuticals underwriting scientific research into their own products, the funding of deep-sea research by mining companies poses an ethical hazard.
- Critics say the nascent industry is already far from transparent, with much of the data from baseline research available only to the scientists involved, the companies, and U.N.-affiliated body that approves deep-sea mining applications.

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.

Worked to death: How a Chinese tuna juggernaut crushed its Indonesian workers
- One of China’s biggest tuna companies, Dalian Ocean Fishing, made headlines last year when four Indonesian deckhands fell sick and died from unknown illnesses after allegedly being subject to horrible conditions on one of its boats.
- Now, an investigation by Mongabay, Tansa and the Environmental Reporting Collective shows for the first time that the abuses suffered by workers on that vessel — most commonly, being given substandard food, possibly dangerous drinking water and being made to work excessively — were not limited to one boat, but widespread and systematic across the company’s fleet.
- Moreover, migrant fishers were subject to beatings and threats to withhold pay if they did not follow orders. Many have not received their full salaries or been paid at all.
- China has the world’s largest distant-water fishing fleet, and Indonesia is widely believed to be the industry’s biggest supplier of labor. In 2019 and 2020, at least 30 fishers from Indonesia died on Chinese long-haul fishing boats, often from unknown illnesses.

Will ‘ropeless’ fishing gear be seaworthy in time to save endangered whales?
- Perhaps fewer than 360 North Atlantic right whales are alive today, according to researchers’ estimates.
- Scientists blame the declining population on the twin tolls exacted by ship strikes and entanglement in fishing gear.
- “Ropeless” fishing gear that minimizes the number of vertical lines in the water that ensnare right whales has emerged as a potential “home run” solution to the entanglement crisis.
- But fishers, industry groups and even ardent proponents of ropeless systems say that it’s not yet a viable replacement for traditional fishing gear in every situation.

Underwater gardeners restore seagrass meadows to keep oceans healthy
- The more than 70 known species of seagrass play a key role in helping mitigate climate change by sequestering large amounts of carbon, as well as providing habitats for fish and invertebrates.
- But their importance in maintaining healthy oceans has long been overlooked, with seagrasses threatened by anthropogenic activities such as destructive fishing and water pollution, often to the extent that they can’t self-recover.
- Several initiatives around the world are trying to restore seagrass meadows, including an ongoing project off the coast of Wales in the U.K., and a successful one around the coastal bays of Virginia.
- Seagrasses are important nurseries for a rich diversity of marine life, including commercially important fish, which means their loss threatens the food security of many communities that depend on these fisheries.

‘We are intimately connected with nature’: Q&A with oceanographer Kim McCoy
- The third edition of Waves and Beaches, published in March 2021 by Patagonia, examines the dynamic relationship between the sea and coast, blending lyrical prose with the theoretical study of beaches, waves and other oceanographic features.
- This new version of the book, which was published 57 years after the first edition, includes a discussion of how human-induced climate change is altering the dynamics between the sea and land, as well as the possible solutions to protecting coastlines against rising sea levels.
- The book was published as a collaboration between oceanographer Kim McCoy and the late Willard Bascom, the author of the first two editions, who acted as McCoy’s mentor in the years before his death in 2000.

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.

For Atlantic sea turtles, Sargasso Sea is home during the ‘lost years’
- In a new study, researchers tracked the movements of young green turtles and found that they navigated toward the Sargasso Sea, rather than drifting passively along the currents in the North Atlantic Ocean.
- While there have been theories and anecdotal evidence that turtle hatchlings travel to the Sargasso Sea and spend their “lost years” in the region, this is the first study that uses satellite tracking to confirm that green turtles are indeed going there.
- A previous study by the same group of researchers also tracked the movements of loggerhead turtles into the Sargasso Sea, although their journeys were found to be more nuanced.
- Experts say the study draws attention to the importance of protecting the Sargasso Sea and tackling issues such as plastic pollution.

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.

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.

How technology can help us achieve at least 30% ocean protection (commentary)
- A growing number of countries are pledging to protect and conserve at least 30 percent of the ocean by 2030.
- Securing such a vast area requires new cutting-edge technology to monitor illegal activities and movements of species. Luckily, this field has been developing fast with new inventions and tech collaborations.
- The goal can be achieved by combining data from a range of sources, connecting the data to existing systems that rangers use, and engaging the people, communities, and sectors that work closely with the sea.
- This article is a commentary and the views expressed are those of the author, not necessarily Mongabay.

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.

For marine life, human noise pollution brings ‘death by a thousand cuts’
- A new review critically examines the issue of human-made noise in the ocean, and how it can negatively impact the behavior, physiology and survival of marine animals.
- While most research on anthropogenic noise isn’t new, the problem has generally been ignored and not addressed in conservation policies, the authors say.
- Despite the severity of the issue, there are many practical solutions to mitigate anthropogenic noise in the ocean, according to the paper.

New paper highlights spread of organized crime from global fisheries
- A recently published paper by the High Level Panel for a Sustainable Ocean Economy highlights the extent of transnational organized crimes associated with the global fisheries sector.
- Besides illegal fishing, these crimes include fraud, money laundering, corruption, drug and human trafficking, and they occur globally throughout the entire fisheries value chain: onshore, at sea, in coastal regions, and online, the paper says.
- The paper calls for an intersectional, transboundary law enforcement by governments around the world to combat these “clandestine” crimes in the global fisheries industry.

Can we predict where Amazon fires will occur? And to what end?
- If it was possible to accurately forecast where Amazon fires were most likely to occur each year, it should theoretically be far easier to prevent and control those fires.
- Amazon fires are currently predicted in two ways: first, based on deforestation, much of it illegal, that occurs in the wet months before the annual fire season; it is these deforested areas that are most often set on fire in the dry months of July through September.
- Second, it’s also possible to predict the approximate severity and Amazon region in which fires may occur based on climate and drought forecasts for the biome, often based on ocean temperatures.
- But being able to predict where Amazon fires might occur is only a first step. A strong, proactive government response is also needed to prevent and control fires, and in order to apprehend and prosecute those who set them ablaze in the Amazon.

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.

Sharks are ‘functionally extinct’ in many global reef systems, study finds
- A new study surveyed 371 coral reefs in 58 countries, and found sharks were virtually absent from 20% of the surveyed reefs, indicating that they were functionally extinct from these ecosystems.
- The research team collected 15,165 hours of video via baited remote underwater video stations (BRUVS), and used this data to analyze shark abundance on global reef systems.
- The absence of sharks was usually connected to poor governance of nearby human settlements, including unregulated and destructive fisheries.
- While sharks were missing from many reefs around the world, other locations boasted healthy shark populations due to rigorous conservation efforts.

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.

Only ‘A-list’ of coral reefs found to sustain ecosystems, livelihoods
- Most of tropical reefs are no longer able to both sustain coral reef ecosystems and the livelihoods of the people who depend on them, as human pressure and the impacts of climate change increase.
- That was the finding of a new study that looked at 1,800 coral reef sites spread throughout the Indian, Pacific and Atlantic ocean basins.
- Only 5% of those sites have plentiful fish stocks, high fish biodiversity and grazing, and well-preserved ecosystem functions — which are key marine ecological metrics.
- The study authors say location and the expected targets set by authorities implementing reef conservation are key to helping other sites achieve these multiple goals.

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