topic: Oceans

topic: Oceans

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The power of cities over the seas
- Much of what determines the ocean’s condition is decided on land, where ports control entry, cities regulate ship operations, and municipal buyers shape seafood demand. These urban levers can influence marine outcomes at scale even though they receive far less attention than treaties or national policy.
- Port rules on fuel use, emissions, and safety can compel global shipping companies to change behavior, as access to major trade hubs is too valuable to lose. When several large ports adopt similar standards, their combined weight can shift industry norms across entire maritime corridors.
- Public procurement provides another pathway, with city-run institutions able to influence fisheries through what they choose to purchase. Sustainability standards — or public scrutiny, as seen in Brazil’s school meal controversy — can ripple back through supply chains and alter incentives at sea.
- Philanthropy focused on oceans may find high leverage in supporting city-level actions such as port electrification, data-sharing systems, and procurement reform. By targeting where rules meet markets and infrastructure, urban governance can complement national efforts and deliver practical gains even when international cooperation falters.

Senegal gas project draws international scrutiny
The UK’s OECD national contact point (NCP), which oversees complaints related to corporate conduct with the Organisation for Economic Co-operation and Development (OECD) has ruled admissible a complaint from Senegalese fishers alleging wrongdoing by energy companies in Senegal. A local NGO and an artisanal fishers’ association assert that the natural gas platform Grand Tortue Ahmeyim […]
Climate change is slowing southern right whale birth rate, 33-year study finds
- A new 33-year study finds that southern right whales off Australia are having calves less often, with the average time between births rising from 3.4 to 4.1 years since 2015, a trend researchers link to climate-driven changes in the Southern Ocean.
- Shrinking Antarctic sea ice and warming waters are reducing the availability of krill and copepods, the whales’ main food sources, leaving females struggling to rebuild their energy after nursing and delaying their next pregnancy.
- The reproductive slowdown is not unique to Australia, with similar declines documented in southern right whale populations off South Africa and Argentina, raising concerns for a species still recovering from near-extinction due to commercial whaling.
- Researchers are calling for expanded marine protected areas, stricter management of Antarctic krill fisheries, and urgent action on climate change to protect the species.

How cockfighting imperils Peru’s critically endangered sawfish
- Mongabay’s new film “Why cockfighting is threatening Peru’s last sawfish” investigates how the critically endangered largetooth sawfish has become a victim of Peru’s legal cockfighting industry.
- Although the species has nearly disappeared from Peru’s Pacific waters, its rostral “teeth” continue to circulate in informal markets, prized for use as cockfighting spurs.
- A single sawfish can yield dozens of spurs, each worth up to $250, creating powerful economic incentives for artisanal fishers facing financial hardship.
- Through interviews with fishers, scientists and cockfighting industry leaders, the film explores whether cultural change within the sport can outpace the illegal trade before the species disappears entirely.

Avian flu strikes California’s northern elephant seals; area quarantined
- Experts confirmed that seven young northern elephant seals on the beach at California’s Año Nuevo State Park carried a deadly form of avian influenza, H5N1, the first recorded infection in these seals.
- This highly contagious virus has circulated the globe since 2020. The U.N. estimates that as of December 2025, H5N1 had infected some 598 bird species and 102 mammal species. In 2022-23, the virus devastated seal colonies off South American coastlines, sparking increased surveillance of North American marine mammals.
- This northern elephant seal population has been carefully studied for about 60 years. With close monitoring, researchers quickly discovered that sick pups were infected with Highly Pathogenic Avian Influenza H5N1.
- Since this avian flu strain emerged, there have been 131 human infections globally, including 71 in the U.S. As a precaution, California officials have banned visitors from the elephant seal beaches and canceled guided tours.

Mongabay shark meat exposé wins national journalism education award in Brazil
- On Feb. 24, Mongabay won first place in the higher education category of Brazil’s National Association of Directors of Federal Higher Education Institutions (Andifes), a top journalism education award in the country, with an investigation that revealed Brazilian state-run institutions were bulk-buying shark meat for public schools, hospitals and prisons.
- “The work stands out for its expert input from specialists and researchers, who contribute to the analysis of the environmental, health and regulatory impacts of the issue,” Andifes said in the announcement.
- In collaboration with the Pulitzer Center, the investigation published in July 2025 tracked 1,012 public tenders issued by Brazilian authorities since 2004 for the procurement of more than 5,400 metric tons of shark meat, worth at least 112 million reais.
- In December 2025, the investigation won second place in the national category of the 67th ARI/Banrisul Journalism Award, one of Brazil’s most prestigious journalism prizes.

Ocean Equity Index aims to measure justice at sea
- Researchers have developed an Ocean Equity Index that seeks to measure how equitable ocean initiatives are based on 12 criteria.
- The index, which was introduced alongside an academic study, can be used by governments, companies and community or Indigenous groups; the authors hope its use will be institutionalized globally.
- Assessing equity quantitatively is challenging because of the subject’s complexity and because perspectives of equity vary widely across actor groups, experts say.

Indigenous Ikoots community prepares to relocate as the Pacific floods their town
- On Mexico’s Pacific coast, sea level rise and infrastructure projects have eroded 8.4 meters of coastline per year since 1967.
- In the community of Cuauhtémoc, San Mateo del Mar, at least 900 Indigenous Ikoots people are increasingly affected by flooding, as homes and streets give way to the sea.
- The community voted to relocate in May 2025, but bureaucratic delays are hindering the process, and many lack the funds to leave the community on their own.

Azores dodges proposal to overturn no-fishing zones in its giant new MPA network
- A law establishing the Azores Marine Protected Areas Network was approved in October 2024 and took effect recently, on Jan. 1 this year.
- The network now safeguards 30% of Azorean waters, 287,000 square kilometers of seascape sheltering a rich array of marine life, and makes up the largest MPA network in the North Atlantic Ocean.
- Not two weeks later, on Jan. 15, the Azores Parliament voted on a measure that upholds a core provision of the MPA network, after it came under fire in recent months: No fishing inside the fully protected areas, which constitute half the vast network.
- Conservationists expressed satisfaction, broadly, with the agreement, but fishers’ groups expressed disappointment.

It’s electric: Scientists develop cheap way to keep sharks off fishing hooks
- Unintentional catch is a major reason that more than a hundred shark species are threatened with extinction.
- A new study found that creating a small electric field around fishing hooks using zinc and graphite is enough to keep many sharks away.
- Researchers have for decades tried to take advantage of sharks’ electrosensitivity to develop devices to keep them off fishing hooks. The authors of the new study chose zinc and graphite because they’re nonmagnetic, cheap and readily available materials.
- The lead author and two former students are pursuing commercial applications for the new method.

Petrostates stymie effort to rein in Arctic shipping carbon emissions
- Black carbon emissions (colloquially known as soot) produced by marine shipping contribute to Earth’s warming climate and also reduce ice and snow cover. In the Arctic, those emissions are hastening regional heating and sea ice loss.
- In the 21st century, climate change has so diminished Arctic sea ice thickness and extent that transpolar crossings in summer by large numbers of commercial vessels has not only become possible but also increasingly frequent, resulting in a marked increase in black carbon emissions from dirty fossil fuels.
- In February, members of the International Maritime Organization (IMO) considered a proposal by several nations to require use of cleaner polar fuels, which emit lower amounts of black carbon. But the effort was blocked and delayed by large petrostates, including the U.S., Russia and Saudi Arabia.
- Implementation of the measure is expected to be delayed by at least two years. With Arctic sea voyages forecast to soar from thousands of trips annually to tens of thousands by 2050, NGOs are calling for greater support for clean polar fuels as a quick and effective way of reducing warming pressure on the Arctic region.

In Thailand, a coral cryobank tries to buy time for dying reefs
- Scientists in Phuket are freezing coral larvae and their symbiotic algae, aiming to create a “living seed bank” to preserve Thailand’s reef genetic diversity amid accelerating climate stress.
- Thailand’s reefs, home to more than 300 coral species, have experienced repeated mass bleaching events since 2022, with damage compounded by tourism pressure, wastewater runoff, sedimentation and overfishing.
- Researchers describe coral cryobanks as a form of “genetic insurance” and ex-situ conservation, but stress they can’t replace in-water protection and must be integrated into broader restoration and marine management strategies.
- Conservation experts say improving water quality, regulating tourism impacts and strengthening community-led marine protection are essential if preserved coral material is to be successfully restored to the wild.

Migrant fishers’ deaths at sea tied to unchecked captain power, study shows
- A new study finds migrant fishers’ deaths at sea stem from systemic labor and governance failures, not isolated safety lapses.
- Far from shore, captains control food, medical care and even how deaths are recorded, with little oversight or accountability.
- Researchers documented 55 cases of Indonesian fishers who died or went missing, showing deaths occur through both direct abuse and prolonged neglect.
- The authors call for stronger international cooperation, mandatory death reporting and supply chain transparency, arguing existing rules alone cannot prevent further fatalities

New study assesses geoengineering marine ecosystem risks, knowledge gaps
- A new review study examines the current research regarding the risks that various geoengineering approaches pose to marine ecosystems.
- The study looked particularly at a range of marine carbon dioxide removal (mCDR) methods, along with solar radiation modification (SRM) technologies, and found that some approaches carry fewer risks than others.
- Electrochemical ocean alkalinity enhancement and anoxic storage of terrestrial biomass in the deep ocean (utilizing crop waste, for example) carry fewer risks to marine ecosystems than some carbon dioxide removal methods, such as those that would add nutrients to seawater to promote major plankton growth.
- However, better models, increased field testing, and better geoengineering regulatory oversight are needed to fully assess potential geoengineering marine ecosystem impacts, especially if commercialization proceeds. Public fears over field testing also need to be allayed.

Scientists discover a new whale highway after tagging a pygmy blue whale by drone
- Scientists in Indonesia have tagged a pygmy blue whale for the first time using a drone.
- Data from the tag revealed a previously unknown path used by the species on its southern migration from Indonesia to the west coast of Australia.
- The biggest threats to the pygmy blue whale include ship strikes in busy shipping lanes, ocean noise pollution, and climate change.
- A team from Timor-Leste will now repeat the drone tagging protocol in their waters.

Coral bleaching: How warming seas are transforming the world’s reefs
- Mass coral bleaching occurs when unusually warm ocean temperatures disrupt the partnership between corals and the microscopic algae that supply most of their energy, leaving corals weakened and often leading to widespread mortality if heat stress persists.
- The 2014–2017 Global Coral Bleaching Event was the most severe on record, affecting more than half of the world’s reefs, and a new global bleaching event that began in 2023 suggests that large-scale damage is continuing as oceans warm.
- Bleaching interacts with other pressures — including ocean acidification, overfishing, pollution, coastal development, and destructive fishing — reducing reefs’ ability to recover and increasing the risk of long-term degradation.
- While conservation, restoration, and experimental interventions may help protect resilient reefs or buy time locally, scientists emphasize that limiting global warming is critical to preserving coral reefs as diverse, functioning ecosystems.

Texas sea turtles have lost a conservation hero (commentary)
- A dedicated sea turtle conservationist on the Texas Gulf Coast has passed away.
- Carole Allen — the founder of HEART (Help Endangered Animals Ridley Turtles)— passed away this month at the age of 90.
- “Some of Carole’s accomplishments are documented in Edward Humes’ 2009 book “Eco Barons” and the 2011 PBS documentary “The Heartbreak Turtle.” But her true legacy lives on in the countless children and adults she inspired over generations,” a new op-ed says.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Snooping on stingrays
Biologging trackers have long been used to track and monitor marine animals like whales, sharks and dolphins. But it has been a challenge to use them on stingrays because of their smooth skin and the lack of a prominent fin. Scientists have now developed a multisensor tag which can be securely attached to sting rays. […]
Sustainable fisheries can’t be built on exploited labor (commentary)
- The connection between human welfare and ocean conservation is direct and unavoidable, a new op-ed argues, because lawlessness toward people often goes hand in hand with lawlessness toward the ocean.
- Although there is an international legal framework governing crew welfare on fishing vessels at sea, these protections remain uneven, weakly enforced, or entirely absent for too many fishing crews, particularly migrant workers deployed on distant-water fleets.
- “We cannot reasonably expect crews to comply with complex fisheries regulations including logbooks, bycatch mitigation, finning bans, spatial closures and other requirements when they are overworked, underpaid, isolated and afraid,” the author writes.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Indigenous concerns surface as U.S. agency considers seabed mining in Alaskan waters
- The U.S. Bureau of Ocean Energy Management is initiating the first steps that could lead to a lease of more than 45.7 million hectares (113 million acres) of waters off Alaska to companies for seabed mining.
- The waters are off the coast of a state that is home to more than 200 Alaska Native nations and the proposal is raising cultural and environmental concerns.
- It’s not yet clear which companies, if any, are interested in mining off Alaska, however some have expressed interest if there are good nodules — mineral-rich rocks.
- Deep-sea mining has been slowed by the lack of regulations governing permits in international waters and by concerns about the environmental impact of extracting critical minerals that formed over millions of years to supply renewable technologies and military industries.

Trump opens only US marine national monument in Atlantic to fishing — again
- U.S. President Donald Trump issued a proclamation on Feb. 6 to open the Northeast Canyons and Seamounts Marine National Monument, a marine protected area off the northeastern U.S., to commercial fishing.
- Trump wrote that reopening the area will not endanger marine species and will help the fishing business, and industry groups praised the proclamation.
- Conservationists decried the move, saying the monument is a critical sanctuary for marine life and the food webs that serve the interest of the U.S. public.
- The Trump administration has also moved to deregulate the other U.S. marine national monuments, which are in the Pacific Ocean.

Mexico considers shrinking protected areas for endangered vaquita porpoise
- Officials in Mexico are considering shrinking a protected area in the Gulf of California, the stretch of water between Baja California and mainland Mexico where the vaquita (Phocoena sinus) is endemic.
- The vaquita is the world’s smallest porpoise and the most endangered marine mammal, with only an estimated 10 individuals remaining.
- The proposal, not yet public but reviewed by Mongabay, would reduce a gillnet prohibition zone and allow traffic through a zero-tolerance area where all vessel activity is currently banned.
- The Ministry of Environment and Natural Resources and other agencies are developing the new regulations, but it’s unclear when they will be implemented.

Abandoned tuna-fishing devices pollute the Galápagos Marine Reserve
- The tuna industry commonly uses fish aggregating devices (FADs) to efficiently collect large volumes of fish; when these devices are lost or abandoned, they can harm marine wildlife and habitats.
- In Ecuador, lost FADs can drift into the Galápagos Marine Reserve, a protected area with hundreds of endemic and threatened species, where they pollute the environment with plastic, harm reefs and entangle wildlife.
- Local agencies and organizations are developing ways to prevent FADs from entering the marine reserve in the first place and trying to clean up the mess they make when they do get in.

Critical shark and ray habitats in Western Indian Ocean largely unprotected: Study
- Almost half of the Western Indian Ocean’s shark and ray populations are considered threatened with extinction, as populations decline.
- The Important Shark and Ray Areas (ISRAs) project has mapped out 125 areas across the Western Indian Ocean that are critical for the survival of many species.
- Yet only 7.1% of these ISRAs fall within existing marine protected areas, and just 1.2% are in fully protected areas where fishing is prohibited.
- Researchers identified challenges related to fishing pressure as the most significant threat to sharks and rays in the region.

NOAA’s satellites capture extreme cold in striking detail
When an Arctic blast pushed deep into the southeastern United States last weekend, it left behind more than freeze warnings and broken records. Over the Atlantic, the cold air reorganized the lower atmosphere into long, parallel cloud bands—patterns that meteorologists recognize as a signature of intense cold moving over warmer water—captured in striking detail by […]
Malaysia lost 20% of its coral reefs in three years
Malaysia’s coral reefs are shrinking at a pace that is hard to ignore. According to the latest national survey by Reef Check Malaysia, about one-fifth of the country’s coral cover has been lost since 2022, a decline compressed into just three years. What had been gradual erosion now looks more like a slide. The 2025 […]
Whale sharks released from nets along India’s coast as fishers turn rescuers
- Once hunted and butchered for oil and meat, whale sharks (Rhincodon typus) are now being rescued by fishers along India’s western Arabian Sea coast.
- Since 2001, the nonprofit Wildlife Trust of India has been educating fishing communities about whale sharks, training fishers in safe disentanglement techniques and offering compensation for destroyed nets.
- During that time, more than a thousand whale sharks have been released from accidental entanglement in fishing nets along India’s west coast.
- However, experts say the compensation for rescues remains insufficient and that social security, insurance, training and livelihood-linked incentives should be offered to protect the fishers who engage in whale shark rescues.

Seagrass restoration in Malaysia finds multi-species approach boosts recovery
- Seagrass restoration is increasingly recognized as crucial for addressing the twin crises of biodiversity loss and climate change.
- However, much remains unknown about the most effective techniques, especially in tropical ecosystems where long-term projects struggle for funding.
- A decade-long seagrass recovery program in Peninsular Malaysia has achieved high survival rates at a site heavily impacted by coastal development, raising hopes that degraded meadows can be revitalized.
- The study also identified several factors that can increase success, including: knowledge of the biology of local seagrass species, adapting methods to suit local environmental and physical conditions, and properly addressing the original drivers of decline.

New global map shows where sharks and rays most need protection
- A new report delineates 816 areas of the ocean that should be protected to help shark and ray populations recover following decades of overfishing.
- The areas, each of which hosts key activities such as reproduction for at least one threatened shark or ray species, are visible on an online atlas open to the public.
- The ISRAs don’t take up all that much of the ocean’s surface: less than 3% for the nine regions where research has been completed, which shows how achievable conservation of sharks and rays is, the lead author said.
- The report was released ahead of a major meeting of the parties of the Convention on the Conservation of Migratory Species (CMS), a United Nations treaty, in Brazil in March, where area-based management decisions for marine species are on the agenda.

Lower levels of PFAS ‘forever chemicals’ in North Atlantic whales show regulations work: Study
- North Atlantic pilot whales now have 60% lower concentrations of some legacy PFAS (forever chemicals) than they did a decade ago, according to a Harvard University-led study.
- This represents roughly a decade-long lag after major manufacturers began phasing out production of the most problematic legacy PFAS in the early 2000s due to toxicity concerns.
- The study also reveals a troubling pattern known as “regrettable substitution,” where banned harmful substances are replaced by similar chemicals that cause comparable harm.
- The findings contrast with trends in human blood samples, where total organofluorine levels have remained stable or even increased despite declining concentrations of legacy PFAS, suggesting newer replacement PFAS may be accumulating primarily on land.

Division’s final journey
- Division, a four-year-old North Atlantic right whale known as Catalog #5217, was found dead off the coast of North Carolina in January after weeks in failing health caused by a severe fishing-gear entanglement that responders were unable to fully remove.
- Born in 2021 to a female named Silt, Division had already survived three earlier entanglements, a reminder of how early and repeatedly right whales now encounter life-threatening human hazards.
- His death comes amid fragile signs of hope for the species, with fifteen calves recorded this winter in a population of roughly 380 whales, far short of the numbers needed for recovery.
- Division’s short life illustrates how the threats facing right whales are not abstract but cumulative and prolonged, shaping lifespans measured in decades and placing the species’ future in the balance of decisions made far from the water.

A ‘new baseline’: Study captures accelerating sea-level rise in Africa
- Sea-level rise has accelerated across Africa in recent decades, thanks to global warming and, in particular, to the melting of ice sheets and glaciers, according to a recent study.
- Sea levels across the continent have risen four times faster since 2010, on average, than they had in the 1990s. About 80% of the sea-level rise is due to added water mass from meltwater.
- The impacts include flooding, erosion of coastal land, intrusion of salty seawater into freshwater drinking sources and displacement of coastal communities.
- In many coastal areas, sea-level rise occurs even as the land itself is sinking due to groundwater extraction or other factors, exacerbating its impacts.

Rio de Janeiro state bans shark meat for school meals
- The government of Brazil’s Rio de Janeiro state has banned shark meat for meals in most of the schools it manages, after pressure from conservationists and school meal advisers raising health and environmental concerns.
- The shark meat ban applies to all 1,200 schools run by the state education department, but not to the thousands of other schools in the state that are managed by municipalities and private entities.
- A Mongabay investigation in July 2025 revealed 1,012 public tenders issued since 2004 to procure more than 5,400 metric tons of shark meat in 10 of Brazil’s 26 states, including Rio de Janeiro.
- Industry groups have criticized the Rio de Janeiro government’s decision, dismissing health risks linked to shark meat consumption, and complained of a lack of transparency in the decision-making process, noting that the ban has yet to be published in the state’s official gazette.

Coast-to-coast coral assessment reveals Thailand’s reefs losing complexity
- Marine scientists have documented Thailand’s coral reefs in unprecedented detail, providing a crucial baseline against which reef managers can measure future change.
- The surveys indicate that, as in other parts of the world, Thailand’s reefs are losing structural complexity, becoming dominated by simpler boulder-forming corals, while staghorn and branching species die out.
- Experts say the new baseline can help steer future strategies to prepare for future bleaching events through reef restoration and assisted reproduction.
- The surveys were conducted just before the full effects of the 2024 global bleaching event were felt in Thai waters, which will have inevitably taken an as-yet-unquantified toll on the region’s reefs.

Making 60% of the ocean manageable (Commentary)
- A new UN treaty, BBNJ, has entered into force to create the first global framework aimed explicitly at conserving biodiversity on the high seas, where industrial activity has expanded faster than oversight. The agreement matters less for its text than for whether it can be translated into real-world governance and enforcement.
- The high seas have never been lawless, but they have been managed through fragmented sector-by-sector institutions, leaving biodiversity as a secondary concern. BBNJ attempts to close that gap without replacing existing bodies, which creates both opportunity and friction.
- The treaty’s success will hinge on practical systems: transparent environmental assessments, credible monitoring, and the capacity for more countries to participate meaningfully. Technology can make harmful activity harder to hide, but it cannot substitute for political will and durable enforcement.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

IUCN launches group to conserve at-risk microbes vital to life on Earth
- Microbial communities, though invisible to the naked eye, are vitally important to planetary health and to Earth’s ecosystems. But they are often neglected in conservation strategies.
- Like other branches of life, microbial communities are under threat due to climate change, pollution, land use change and a wide range of other human actions. Degraded microbial communities can have harmful consequences for human well-being, ecosystems health and wider planetary processes.
- A newly launched specialist group under the International Union for the Conservation of Nature (IUCN) aims to place microbes on the conservation agenda.
- The new IUCN group plans to develop conservation strategies aimed at identifying and protecting at-risk microbial species vital to planetary health and create a Red and Green List, similar to those that exist for threatened animals and plants.

2025 was third-warmest year on record, research shows
2025 was the third-warmest year on record, according to the World Meteorological Organization (WMO). The warmest year on record is still 2024, with 2023 coming in second. The global average surface temperature for 2025 was estimated to be 1.44° Celsius (2.59° Fahrenheit) higher than preindustrial levels. The last 11 years have been the warmest 11 years […]
A new treaty comes into force to govern life on the high seas
- A new United Nations treaty governing biodiversity in areas beyond national jurisdiction will enter into force on January 17th 2026, creating the first global framework to conserve life on the high seas.
- The agreement covers roughly 60% of the ocean and introduces mechanisms for marine protected areas, environmental impact assessments, benefit-sharing from marine genetic resources, and capacity building for poorer states.
- Long treated as a global commons with weak oversight, international waters have seen mounting pressure from overfishing, prospective seabed mining, and bioprospecting, with less than 1.5% currently protected.
- The treaty’s significance will depend less on its text than on whether governments use it to impose real limits on exploitation and translate shared commitments into enforceable action.

Ocean set ‘alarming’ new temperature record in 2025
- Ocean temperatures set a record high in 2025, according to a new study.
- The authors found that the heat content of the ocean increased by about 23 zettajoules between 2024 and 2025. That’s roughly the equivalent of 210 times humanity’s annual electricity generation.
- The ocean has warmed significantly in recent decades largely because it absorbs roughly 90% of the excess heat trapped in the atmosphere by human-caused greenhouse gases. That makes the ocean a key indicator of global warming.
- Warming ocean temperatures contribute to sea-level rise and to extreme weather events, which were frequent in 2025.

Study tracks fishing boats to see how heat waves affect fish distribution
- A new study suggests an early way to detect ecological shifts during marine heat waves: Use fishing vessel tracking data.
- The study found that tracking data could provide early detection of extreme northward and inshore shifts in albacore tuna and Pacific bluefin tuna distribution in response to heat waves and showed when such shifts weren’t happening despite high sea surface temperatures.
- The authors position fishers as “apex predators” and build on research that finds that predators are good ecosystem sentinels.

North Atlantic right whale births increase
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Scientists monitoring North Atlantic right whales have recorded an increase in births this winter. Fifteen calves have been identified so far, an encouraging figure for a population that has struggled to sustain itself. There were an estimated 384 […]
Mauritania’s fishmeal fever ends as government tightens regulation
- Until recently, Mauritania was a major fishmeal producer, home to the world’s second-highest number of processing plants, with the boom driven largely by lax regulations and the rapid issuance of permits between 2007 and 2021.
- By 2021, more than half of Mauritania’s total pelagic fish catches were being used for fishmeal.
- That same year, however, the government began introducing stricter regulations and strengthening enforcement of rules governing the sector.
- Only eight fishmeal plants in Mauritania remain active as of September 2025, according to Mongabay’s estimates, and fishmeal production has fallen by more than half since its peak in 2020.

Methane chasers: Hunting a climate-changing gas seeping from Earth’s seafloor
- Methane is a potent greenhouse gas that can pack more than 25 times the global warming punch of carbon dioxide, and atmospheric methane emissions have been growing significantly since 2007. So it’s vital that humanity knows how and where methane emissions are coming from, including the world’s oceans.
- Scientists first raised the alarm over methane releases from shallow waters in the Arctic Ocean between 2008 and 2010. But recently, they were surprised to discover new releases in shallow waters off Antarctica. Researchers continue spotting additional seafloor seeps there and elsewhere, as methane bubbles escape seafloor sediments.
- In shallow waters, methane bubbles that break the ocean’s surface add greenhouse gases to the atmosphere, but to learn how much climate risk these bubbles pose, scientists first have to find them. The hunt for methane bubbles requires everything from underwater microphones and sonar maps to scuba divers and submersibles.
- Methane seeps are more than a potential climate change threat. They also form the basis of unique chemosynthetic ecosystems that influence the deep sea and may hold clues about the origin of life. Finding and studying those seeps present fascinating challenges, requiring ingenuity and creative thinking by researchers.

Marine protected areas expanded in 2025, but still far from 30% goal
In December 2022, nearly 200 nations committed to protecting 30% of Earth’s lands and waters by 2030. As of 2025, about 9.6% of the world’s oceans are now covered by marine protected areas, according to the latest global tracking data by the World Database on Protected Areas. This marks a 1.2% increase in 2025, up […]
Azores must respect its exceptional network of marine protected areas (commentary)
- Just over a year ago, the Azores created the largest network of marine protected areas (MPAs) in the North Atlantic, becoming a beacon of hope and a global leader in ocean conservation.
- Then, in early 2025, a proposal to allow tuna fishing in “no-take” areas there was submitted to the Regional Assembly; this is currently under discussion and could come to a vote this week or next week.
- “Such a retreat from ocean protection would not only be a local tragedy but also a disheartening contribution to the global backpedaling on environmental political will,” a new op-ed argues.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Emma Johnston, a marine ecologist with institutional reach, has died at 52
- Emma Johnston, who died at 52 in December 2025, moved between marine science and university leadership, arguing that evidence matters only if it can be understood and acted upon beyond the laboratory.
- Trained as a marine ecologist, she built influential research programs on human impacts in coastal ecosystems and became a prominent public advocate for science in an era of misinformation and political noise.
- Her career expanded into national leadership roles, including president of Science & Technology Australia and senior research posts at UNSW and the University of Sydney, before she became vice-chancellor of the University of Melbourne in 2025.
- Though her tenure as vice-chancellor was brief, she pressed a strategy centered on resilience and education, leaving Australian science without a leader who could connect data, institutions, and public life with unusual clarity.

Deep-sea ‘hotels’ reveal 20 new species hiding in Pacific Ocean twilight zone near Guam
- Scientists from the California Academy of Sciences retrieved 13 underwater monitoring structures from the deep reefs off the Pacific island of Guam, which have been gathering data there at depths up to 100 meters (330 feet).
- The devices, called ARMS (Autonomous Reef Monitoring Structures), yielded 2,000 specimens, including 100 species never before recorded in the region and at least 20 species new to science.
- Temperature sensors on the ARMS revealed that ocean warming is occurring even in the twilight zone.
- The Guam expedition marks the start of a two-year effort to retrieve 76 ARMS from deep Pacific reefs to help protect these ecosystems from fishing, pollution and climate change.

Road to recovery: Five stories of species staging a comeback
Amid accelerating biodiversity loss and shrinking ecological spaces, it’s easy to lose hope. But every year, there are stories of optimism: of species that are making a comeback after being nearly wiped out. Here are five such species whose recovery Mongabay reported on in 2025: Cape vulture The Cape vulture (Gyps coprotheres), southern Africa’s largest vulture […]
Fishing ‘modernization’ leaves Tanzania’s small-scale crews struggling to stay afloat
- Tanzania’s boat modernization program aims to empower small-scale fishers with affordable, government-distributed vessels, but has instead left many struggling with unreliable vessels and unsustainable loans.
- In Kilwa district, fishers say the boats they received were poorly equipped, costly to operate and prone to mechanical failure, forcing them to rent missing gear and spend more on fuel.
- Mounting repayment pressure is driving some fishers toward illegal or risky fishing practices, undermining the project’s goal of promoting sustainability.
- Experts warn that poor consultation, mismatched designs and a lack of community input threaten to turn Tanzania’s fisheries modernization plan into a long-term burden rather than a solution.

Kristina Gjerde, defender of the deep ocean, has died
- Much of the global ocean lies beyond national borders, where governance long lagged behind industrial expansion and responsibility thinned with distance from shore.
- Kristina Maria Gjerde helped reframe that problem as one of law and institutions, combining science, legal craft, and persistence to make protection of the high seas politically workable.
- Over two decades, she built and sustained coalitions that turned scattered warnings about deep-sea damage into a binding international framework.
- That effort culminated in the 2023 High Seas Treaty, an agreement whose force lies less in sudden ambition than in the accumulation of careful, patient work.

Top ocean news stories of 2025 (commentary)
- Marking the midway point in the U.N. Decade of Ocean Science for Sustainable Development, 2025 was a key year for the ocean.
- The past 12 months brought landslide multilateral wins for ocean policy, unprecedented ocean financial commitments, and increasing momentum to protect 30% of the ocean by 2030.
- Here, marine scientists, policy experts and a communications expert lay out the key ocean stories from the past year.
- This post is a commentary. The views expressed are those of the authors, not necessarily Mongabay.

Huge ‘blue carbon’ offsetting project takes root in the mangroves of Sierra Leone
- In October, a wholly owned subsidiary of West Africa Blue, a Mauritius-based company, signed a “blue carbon” offsetting deal with the 124 communities on the island of Sherbro in Sierre Leone.
- The agreement will reward the communities financially for conserving and restoring their mangroves, which act as a carbon sink.
- The funds will be generated by selling offsets on the voluntary carbon credit market, with revenues shared between West Africa Blue, the communities and the government of Sierra Leone.
- Though carbon offsetting projects have been subject to criticism in the past, community members on Sherbro say they’re optimistic about the improvements to their livelihoods that the project could bring.

As Cyclone Ditwah battered land, Sri Lanka’s oceans absorbed a silent shock
- Following the tropical Cyclone Ditwah, unusual sea-foam appeared along parts of Sri Lanka’s northern coast, a natural phenomenon caused by storm-driven turbulence and organic compounds released by plankton, not marine pollution, scientists say.
- Extreme rainfall from Ditwah released an extraordinary volume of freshwater into the ocean, and researchers estimate that nearly 10% of Sri Lanka’s average annual rainfall was received in a single day and rapidly drained to sea through the island’s river network.
- Flood-driven sediments and sudden changes in salinity may stress coral reefs and coastal ecosystems, but Sri Lanka lacks systematic sediment monitoring at river mouths, leaving scientists with limited data on downstream impacts.
- The floods also swept plastics, debris and nutrients into coastal waters, potentially intensifying plankton blooms and fish aggregations while increasing the risk of algal blooms, oxygen depletion and long-term marine pollution.

Mongabay shark meat investigation wins national journalism award in Brazil
- A Mongabay investigation that revealed Brazilian state-run institutions bulk-buying shark meat for public schools, hospitals and prisons won second place in the ARI/Banrisul Journalism Award, one of Brazil’s most prestigious journalism prizes.
- In collaboration with the Pulitzer Center, Mongabay revealed how authorities had issued 1,012 public tenders since 2004 for the procurement of more than 5,400 metric tons of shark meat, raising environmental and public health concerns.
- In a statement, the Rio Grande do Sul Press Association (ARI) said the award “recognized the talents” in professional and university categories amid a record number of entries, up 40% from the 2024 edition.
- Following the revelations, the investigation sparked several impacts, from a call for a public hearing in Brazil’s lower house of Congress, a citation in a lawsuit to ban shark meat from federal procurements, to an industry debate questioning the harms of shark meat consumption.

Century-old corals reveal the Pacific Northwest is acidifying faster than expected
- When compared with historical samples, corals show that the Salish Sea and California Current System are acidifying faster than anticipated because of greenhouse gas emissions. Models indicate that at this rate, carbon dioxide levels in the oceans will continue rising faster than concentrations in the atmosphere.
- Increasingly acidic seas pose growing risks to sensitive marine life, from clams and oysters to any organism with a spine, as well as economically important fisheries and the communities that depend on them.
- British marine ecologist Stephen Widdicombe calls the threat existential. Our continued failure to cut emissions can only lead to “a world where uncontrolled climate change including ocean acidification leaves us with an ocean that is less productive, less diverse and less able to provide humans with the wealth of services that we currently all benefit from,” he said.

Bethany “Bee” Smith, researcher who documented a megamouth shark alive, died in a diving accident, aged 24
- Bethany “Bee” Smith was part of a generation of scientists who worked in the field while also explaining their work publicly, narrowing the distance between research and spectacle without denying the risks that came with it.
- Trained as a marine biologist, she spent years studying sharks, working with fishing communities and researchers, and focusing on conservation problems where trust and policy mattered as much as data.
- After years of preparation and failed attempts, she achieved a rare feat: documenting a live megamouth shark, one of the least understood large animals on Earth, in work focused on evidence rather than thrill.
- She died at 24 during a freediving accident in Indonesia while working on a shark conservation project, after reaching a goal that had occupied years of careful effort and preparation.

A flood of logs post-Cyclone Senyar leaves Padang fishers out of work
- Flash floods in late November swept timber and mud from upstream forests into coastal waters around Padang, blocking access to the sea and cutting off the livelihoods of hundreds of fishers.
- Fishers say massive floating logs have damaged boats and halted daily incomes, forcing many families to rely on credit to meet basic needs.
- Marine scientists warn that suspended sediment and decaying timber threaten coastal ecosystems by blocking sunlight, disrupting food chains and degrading water quality.
- Environmental groups link the disaster to illegal logging and weak forest governance upstream, calling for stronger law enforcement, national disaster status and urgent government action.

Zombie urchins & the Blob: California sea otters face new threats & ecosystem shifts
- Southern sea otters living along California’s coast are struggling in warmer seas, with new threats and changing food sources. They, like the other two sea otter subspecies, are classified as endangered.
- Human disturbance, especially in Monterey Bay, is limiting the otters’ ability to forage, impacting mother and pup survival. Meanwhile, sharks are expanding their range as waters warm, with increasing attacks on otters.
- Following a mass die-off of the purple sea urchin’s predators — sunflower and ochre sea stars — the urchins decimated kelp forests, which are important sea otter habitat. Mussels then proliferated, replacing urchins in the otter’s diet, and invasive green crabs are now also on the menu.
- Otter numbers seem to be dropping, but a definitive census has not been conducted since 2019. A new population estimate based on data and statistical modeling is due to be released soon.

Drug gangs in Ecuador and Peru also involved in shark fin trafficking: Report
Narcotrafficking gangs operating out of Manabí, a coastal province of Ecuador, are also involved in trafficking shark fins alongside their drug operations, according to a recent investigation by Ecuadorian news agency Código Vidrio. Evidence from wiretaps, surveillance and raids seen by Código Vidrio reporters suggests that gangs are capturing and finning sharks and transporting the […]
Marine heat waves and raw sewage combine to put human health at risk
- Climate change is fueling an increasing number of marine heat waves across the globe.
- When this intensifying heat is coupled with pollution — especially sewage, nitrogen fertilizer agricultural runoff, wildfire soot and possibly plastics — waterborne bacterial pathogens can multiply, raising human health concerns.
- These connections are exemplified in the escalating spread of Vibrio, a group of naturally occurring bacteria whose numbers are multiplying and undergoing global distribution shifts due to complex relationships between marine heat waves and pollution.
- Vibrio infections can range in severity but can result in sickness and death. One notorious Vibrio species is known as the flesh-eating bacteria; another causes cholera.

The lab-in-a-backpack busting illegal shark fins: Interview with Diego Cardeñosa
- Diego Cardeñosa chose lab-based DNA research over fieldwork during his Ph.D. on sharks, betting it could deliver greater conservation impact despite being less glamorous.
- He developed a portable, rapid DNA test — like the kits used during the COVID-19 pandemic — that allows inspectors to identify shark species from fins on the spot, solving a key bottleneck that let illegal shipments slip through.
- The tool has evolved from identifying a handful of protected species to distinguishing among more than 80 sharks and rays in a single test.
- Now deployed across multiple countries, the relatively low-cost kit is expanding through grant support, with plans to adapt the technology to other trafficked wildlife beyond sharks.

Pacific fisheries summit gives a boost to albacore & seabirds
- The Western and Central Pacific Fisheries Commission (WCPFC), a multilateral body that sets fishing rules for an area that covers nearly 20% of the planet, held its annual meeting Dec. 1-5 in Manila, the Philippines.
- The parties adopted a harvest strategy for South Pacific albacore (Thunnus alalunga) that will set near-automatic catch limits based on scientific advice, considered a best practice in fisheries management. Conservationists celebrated the move.
- The parties also adopted a measure that aims to keep seabirds from drowning on industrial fishing lines.
- They didn’t adopt any new rules on the ship-to-ship transfer of fish and other goods at sea, a practice known as transshipment that’s been linked to illegal fishing and other illicit activity.

Philippines’ newest marine protected area ‘sets inspiring example’ (commentary)
- Nestled in the heart of the Coral Triangle, one of the most biodiverse marine regions on the planet, Panaon Island is a jewel of the Philippines’ natural heritage.
- Despite its biodiversity, Panaon Island faces growing threats, so a broad coalition of community leaders, environmental advocates and government agencies have rallied to designate the waters surrounding it as a new marine protected area (MPA).
- But safeguarding marine habitats requires more than designations and new maps. “Marine protected areas need proper funding, active monitoring and strong enforcement to prevent illegal activities from undermining conservation,” a new op-ed says.
- This article is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

West and Central Africa tackle coastal erosion
- Coastal erosion along the coastline of West and Central Africa has been attributed to both natural causes and to human causes, including infrastructure development.
- With support from international finance agencies, governments cross the region have favored intensive engineering solutions to attempt to protect eroding shorelines.
- Environmentalists say nature-based interventions such as restoring mangrove forests that can stabilize soil and protect marine biodiversity.

Seafloor survey in Cambodia finds simple anti-trawling blocks help seagrass recover
- A recent study provides the first large-scale map of Cambodia’s coastal habitats and reports early seagrass recovery near anti-trawling structures in the Kep Marine Fisheries Management Area.
- Surveys across 62,146 hectares (153,566 acres) show a 39% loss of seagrass cover in Kampot province over the past decade.
- The study doesn’t examine potential impacts from the planned $1.7 billion Funan Techo Canal, which is set to meet the sea about 2.5 kilometers (1.6 miles) away from the Kep Marine Fisheries Management Area.

Artisanal fishers in Liberia question benefits of new tracking devices from government
- The Liberian government earlier this year distributed 400 automatic identification system (AIS) transponders to small-scale fishers in the counties of Grand Cape Mount, Grand Bassa, Margibi and Montserrado.
- The devices transmit a vessel’s position and speed via radio signals, and Liberian authorities say they hope it will help in speeding up responses to vessels that are in distress.
- However, many small-scale fishers appear reluctant to adopt the new device, with some saying they would prefer GPS-equipped devices that let them track their own location.
- The Liberia Artisanal Fishermen Association (LAFA), an advocacy group, blames the low adoption rate on the inadequate involvement of fishers during the design and rollout of the project.

Study finds more ‘laggards’ than ‘leaders’ among high seas fisheries managers
- A new paper suggests that regional fisheries management organizations (RFMOs) haven’t done a very good job setting up systems to conserve fish stocks and broader ecosystems.
- The paper questions RFMOs’ readiness for a coming new era of marine governance, with the high seas treaty set to take effect in January.
- The authors rated 16 RFMOs based on 100 management-related questions, such as “Are there consequences for violations of conservation measures …?” and used the answers to help identify “leaders” and “laggards.” The average rating was 45.5 out of 100.
- They also determined that on average, more than half of RFMOs’ target stocks are overexploited or collapsed, reinforcing previous research.

Global manta and devil ray deaths far exceed earlier estimates: Study
- A new global assessment estimates more than 259,000 manta and devil rays (genus Mobula) die in fisheries each year, far exceeding previous figures, with researchers warning that the true toll is likely higher due to major data gaps.
- Small-scale fisheries account for 87% of global mortality, with India, Indonesia, Sri Lanka, Myanmar and Peru responsible for most mobulid deaths .
- The study documents steep, long-term declines, including in Mozambique, the Philippines and the eastern Pacific Ocean. Yet many losses came to light only recently due to late adoption of monitoring and weak reporting.
- Researchers say the recent uplisting of all mobulid species to CITES Appendix I, which bans international commercial trade, is a key step, but note that national-level protections, improved data reporting, gear reforms, and better spatial management are needed to reduce mortality.

As fish catches fall and seas rise, Douala’s residents join efforts to restore mangroves
- Cameroon’s coastal fisheries are in decline, leaving fishers with dwindling catches — a crisis linked directly to the depletion of the country’s mangroves, experts say, which are breeding grounds for fish.
- The expansion of urban settlements, conversion of coastal land for agriculture, and sand extraction drives mangrove loss in Cameroon; another key driver is the use of mangrove wood for smoking fish.
- The Cameroon government and NGOs have set themselves an ambitious goal of restoring 1,000 hectares (nearly 2,500 acres) of mangrove forests by 2050.
- A key strategy involves engaging local communities in the replanting process and providing alternative livelihoods, such as urban farming and beekeeping, to reduce dependence on mangrove wood.

Unregulated tourism risks disrupting Timor-Leste’s whale migration
- 2025 has been a big whale tourism season in Timor-Leste; operators were fully booked during the peak season of September to December.
- But increasingly aggressive practices fueled by competition between tour operators could mean “another Sri Lanka,” where whales already stressed by climate-induced food scarcity are disappearing from the area.
- East Timorese are mostly excluded from the sector, which is controlled by expats and foreign tour operators raking in thousands from “bucket listers” and social media “influencers.”
- Whale tourism in Timor-Leste needs regulation, enforcement and legal compliance to ensure sustainable, inclusive growth, experts say.

Deep-sea mining interests raise alarms among Mariana Trench communities
- On Nov. 12, the Bureau of Ocean Energy Management (BOEM) issued a request for information (RFI), indicating its interest in “leasing” marine minerals located on the CNMI’s outer continental shelf, a process that would allow commercial mining to proceed on the seabed of the Commonwealth of the Northern Mariana Islands (CNMI).
- Critics say BOEM’s handling of the RFI was rushed and opaque, noting that the agency failed to consult the CNMI and Guam governments or communities before opening a brief 30-day window for public comment.
- Critics also warn that deep-sea mining could irreversibly harm the marine environment and undermine the region’s deep cultural ties to the ocean, while amounting to another form of U.S. colonial exploitation in the Pacific.

With a target on their bellies, can California’s sturgeon survive?
- California’s green sturgeon and white sturgeon face numerous threats from dams, harmful algal blooms and overfishing.
- White sturgeon are highly prized for their eggs, which are made into caviar.
- Their numbers have dropped so precipitously that they’re now being considered for protection under the California Endangered Species Act.
- The state banned commercial sturgeon fishing in 1954, but the amount of poaching and caviar trafficking is unknown, and there have been cases linked to criminal networks involved in other illegal activities.

What would this scientist tell Trump? Interview with Robert Watson, former chair of the IPCC
- This week, the UN Environment Program launched the Global Environment Outlook 7 (GEO-7), a stark assessment that comes on the heels of US President Donald Trump’s dismissal of climate change as a “con job.”
- In this context, Mongabay interviewed GEO-7 co-chair Sir Robert Watson about what to tell a political leader who rejects the science.
- “The evidence is definitive,” says Watson, who argues that countries must rethink their economic and financial systems and that science must be heard in the rooms where power lies.

The last of the Vaquita Porpoise (cartoon)
With an estimated less than 10 individuals alive, the vaquita porpoise of the Gulf of California is on the brink of extinction. Entanglement in gill nets used for fishing totoaba fish in the Sea of Cortez has been the prime threat to vaquitas, and while bans are already in place, the lack of enforcement leaves […]
‘Myopic’ fisheries managers toy with a new ‘tragedy of the commons’ (commentary)
- There are many examples of “tragedies of the commons,” whether in the atmosphere as a result of carbon dioxide pollution, or in the oceans because of marine plastics. But arguably the largest in the world is caused by overfishing, a new op-ed argues.
- The general absence of effective fisheries regulations that ensure the conservation of healthy fish populations endangers whole oceans and the billions of people who depend upon fish for their livelihoods.
- “Currently, fisheries ministers are myopically obsessed with the pain the industry always claims it would suffer next year if the right conservation policies were adopted. They should look instead at how long we have been getting it wrong, and how quickly things could be turned round,” a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Can we create new inland seas to lower sea level rise? Interview with researcher Amir AghaKouchak
- A new research project is looking into the possibility of reflooding the Qattara Depression, a massive low-lying desert area in Egypt, to help counter sea level rise.
- Scientists forecast global sea levels will rise by at least 30 centimeters (12 inches) over present-day levels by the end of the century — and that’s a conservative prediction.
- Mongabay spoke with Amir AghaKouchak, the project’s leader, who says reflooding the Qattara Depression could also bring potential benefits to Egypt, including aquaculture, renewable energy and tourism.
- The idea remains in its infancy and would require the backing of the Egyptian government as well as a great deal of further study.

New underwater acoustic camera identifies individual fish sounds, helping track threatened species
- More than 35,000 species of fish are believed to make sounds, but less than 3 percent of species have been recorded.
- A new audio and visual recording device allowed scientists to identify the most extensive collection of fish sounds ever documented under natural conditions.
- Labeling the unique sounds of fish will allow conservationists to better track the behaviors, locations, and populations of threatened fish species.

Another threat to reefs: Microplastic chemicals may harm coral reproduction
- Plastic pollution is a growing problem in many reef ecosystems, and its effects are not well understood.
- Most previous research has focused exclusively on adult corals and their interactions with plastic particles, rather than larval stages of coral or the chemicals from plastic that leach into water.
- In a new study, researchers exposed coral larvae from two different species to four different plastic chemicals and found that they negatively impacted coral larvae settlement.

For fossil fuel-dependent islands, ocean thermal energy offers a lifeline
- Ocean thermal energy conversion (OTEC) is gaining renewed attention as a reliable, 24/7 clean-energy option for tropical islands, with a pilot project in the Canary Islands showcasing its potential and building on small-scale tests in Japan and Hawai‘i.
- The technology uses the temperature difference between warm surface water and cold deep water to evaporate a working fluid, drive a turbine and regenerate the cycle — offering massive theoretical potential to generate up to 3 terawatts globally.
- Seawater-based heating and cooling systems, including seawater heat pumps and seawater air-conditioning (SWAC), are already in use and could be scaled up rapidly to cut emissions when paired with renewables.
- Major barriers include cost, investor reluctance and environmental concerns, especially around deep-water discharge and ammonia use, prompting calls for large-scale demonstration projects to prove first prove their viability and safety.

A rare bright spot for whales: Decades of conservation pay off for endangered population in Canada
- Northern bottlenose whale populations have struggled to rebound, even though commercial whaling was outlawed in their habitats more than 50 years ago.
- Long-term monitoring shows that one population of the species has begun to recover since their year-round habitat, a submarine canyon off Canada’s east coast known as the Gully, became a Marine Protected Area in 2004.
- The Gully MPA provides a rare marine conservation success story, but protection for marine mammals that migrate is more complex.

Philippine mangroves survived a typhoon, but now confront a human-made challenge
- A new study shows mangroves in Tacloban, the Philippine city hit hardest hit by Typhoon Haiyan in December 2013, have expanded beyond pre-storm levels.
- This recovery was driven by community-led reforestation efforts from 2015-2018, when residents planted 30,000 Rhizophora mangrove seedlings across 4 hectares (10 acres) of Cancabato Bay.
- Satellite image analysis and modeling reveal how the forest was destroyed by Haiyan and how it later withstood 2019’s Typhoon Phanfone.
- However, experts warn that the recovering mangroves may be threatened by an ongoing project to build a causeway across the bay, which could generate pollution and physical disturbances.

Jean Beasley, who turned her young daughter’s dying wish into a mission to save sea turtles, has died
- After the death of her daughter Karen in 1991 and her dying wish to “do something good for sea turtles,” Jean Beasley committed herself to sea turtle conservation on Topsail Island, North Carolina.
- She founded the state’s first sea turtle rehabilitation center, beginning in a cramped 900-square-foot space and growing it into a respected 13,000-square-foot hospital and public education facility in Surf City.
- Beasley valued both direct action and education, believing that saving one turtle mattered but inspiring others—especially children—to care about the ocean could save many more.
- Her decades of work helped protect more than 3,000 nests and rehabilitate at least 1,600 turtles, while also motivating future conservationists and proving that a daughter’s dying wish could become a movement of hope.

Countries back strong new trade limits for sharks and rays at CITES summit
Delegates at a global summit to update international wildlife trade rules have agreed on sweeping new protections for more than 70 shark and ray species. The move marks a significant step toward effectively tightening the legal trade in some of the world’s most threatened marine life. The meeting in Samarkand, Uzbekistan, running through this week, […]
Lost at sea, found in Latin America: the journeys of discarded plastic bottles
- A regional study led by citizen scientists reveals the scope and sources of plastic bottle pollution along Latin America’s Pacific coast.
- Central America hosts the most polluted sites, where high population density and limited recycling infrastructure drive plastic buildup.
- Bottles traced to distant continents show how maritime currents spread waste across borders.
- Researchers suggest implementing standardized bottle return systems while highlighting citizen science as a tool for environmental action.

Healthy oceans are a human right (commentary)
- In 2022, the United Nations affirmed the basic human right to a clean, healthy and sustainable environment.
- The idea is straightforward: people’s fundamental human rights to health, food, security and even life rely on a healthy environment.
- But we are still far from ensuring that these rights are protected for the coastal communities living with the consequences of ocean decline every day, a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Indigenous knowledge and science join forces to save the choro mussel in Chile
- In southern Chile’s Huellelhue River estuary, three Mapuche Huilliche communities are leading efforts to restore the natural beds of the choro mussel through a participatory governance model that brings together ancestral knowledge, science and education.
- Intensive harvesting during the 1990s led to the collapse of this mollusk, disrupting local ecosystems and the livelihoods of coastal communities.
- After confirming the mussel’s critical state, a total harvesting ban was declared in 2019; the communities formally requested that the Undersecretariat of Fisheries and Aquaculture extend it to 2026.
- Thanks to the ban, the mussel population is now showing clear signs of recovery, while Indigenous communities and experts implement a sustainable management plan and a laboratory-based repopulation program.

Behind Sri Lanka’s ‘fish rain’ lies a web of migrations now blocked by rising dams
- Sri Lanka recently reported a “fish rain,” where fish were found far from water bodies after heavy rains; but rather than falling from the sky, experts say these were amphibious fish that “walked” overland after the rains, making a rare but real phenomenon appear mysterious.
- Events like this highlight the subtle yet vital migrations that many freshwater species undertake — from overland movements by climbing perch and snakeheads, to upstream monsoon breeding runs by small fishes, to the epic sea-to-river-to-sea journeys of eels navigating rocks, dams and reservoirs.
- Such migrations are ecological lifelines, linking wetlands, rivers and coastlines, enriching ecosystems (as with salmon), and ensuring the survival and reproduction of a wide range of freshwater species.
- But in Sri Lanka, a growing network of dams, mini-hydro barriers and irrigation weirs is fragmenting rivers and blocking these ancient routes; despite fish ladders being proposed by dam developers, they’re rarely built, leaving many species unable to complete migrations essential for their survival.

What’s at stake for the environment in Honduras’ presidential election?
- Honduras will hold elections Nov. 30 for president and all 128 seats in Congress.
- The winners will hold office for the next four years, shaping the country’s environmental policies at a time when its many forests and ocean ecosystems are rapidly disappearing.
- Leading candidates include Rixi Moncada of the progressive LIBRE party, Salvador Nasralla of the centrist Liberal party and Nasry ‘Tito’ Asfura of the conservative National party.

Deep-diving manta rays use the ocean’s midnight zone to build mental maps, study suggests
- Oceanic manta rays dive to record depths of 1,250 meters (4,100 feet), according to a first-of-its-kind study to examine in detail the extreme deep-diving behavior of these rays.
- Researchers tracked 24 manta rays between 2012 and 2022, attaching special tags to them in waters off Peru, Indonesia and Aotearoa New Zealand.
- Researchers propose that dives help rays sample stable environmental signals, such as temperature, oxygen levels and possibly magnetic fields, in preparation for navigating the open ocean.
- Extreme dives occurred most frequently when rays left continental shelves, before embarking on long journeys exceeding 200 kilometers (120 miles).

COP30: What did it deliver for the ocean?
- As climate change talks took center stage at COP30, a growing number of countries have integrated ocean-based solutions into their national climate commitments.
- A new report found that 92% of coastal and island nations’ updated climate plans now include ocean-related measures, although these strategies still represent only 12% of all proposed climate mitigation actions.
- Brazil and France unveiled a Blue NDC Implementation Taskforce to boost ocean solutions, while countries like the Solomon Islands and Ghana launched new plans for protecting their marine and coastal systems.

Abrolhos: A South Atlantic marine treasure in need of protection
- Located off the coast of the Brazilian states of Bahia and Espírito Santo, the vast Abrolhos Seascape is home to some of the South Atlantic Ocean’s richest marine biodiversity. Here, more than 500 species inhabit coral reefs, mangrove forests and islands. Brazil’s largest humpback whale breeding ground also occurs within the seascape.
- Yet little legislation has been created to protect this region, leaving it at risk of predatory fishing and deep-sea mining: Less than 2% of the South Atlantic’s largest coral reef, which occupies 46,000 square kilometers within the wider Abrolhos Seascape, is fully protected.
- A recent study identified critical areas and vulnerable ecosystems within Abrolhos Seascape that the authors say need urgent conservation action; these include rhodolith beds — clusters of limestone rock that are crucial for climate security and marine species reproduction.

TotalEnergies faces criminal complaint in France over alleged massacre in Mozambique
As French oil and gas giant TotalEnergies prepares to resume work on its multibillion-dollar offshore gas project in northern Mozambique, it faces a criminal complaint back home over its role in funding an army unit accused of torturing and executing dozens of civilians in 2021. The complaint was filed with France’s National Anti-Terrorism Prosecutor by […]
‘Forever chemical’ contamination could undermine sea otters’ fragile recovery in Canada
- Sea otters living along the coastline of Canada’s British Columbia province are exposed — and absorb — forever chemicals, a new study shows.
- Each of the 11 sea otters tested carried residues PFAS chemicals, with concentrations higher for those living near dense human populations or shipping lanes.
- The Canadian government released an assessment earlier this year recommending that PFAS be classed as toxic and is moving toward adopting tighter rules for these chemicals. Environmentalists support the initiative.

For sharks on the brink of extinction, CITES Appendix II isn’t protective enough (commentary)
- Listing shark species under CITES Appendix II, which allows for well-monitored sustainable trade, has helped to save some sharks from extinction. But some species are so threatened that they need to be listed on Appendix I, which bans all trade.
- New research has revealed that many fins belonging to sharks protected by Appendix II are still being sold in large numbers in Hong Kong, one of the biggest markets, supporting the need for action on Appendix I listings for some species at the CITES COP20 meeting that commences next week in the Uzbek city of Samarkand.
- “Governments meeting at COP20 in Uzbekistan should follow the science, support these proposals, and help save these sharks and rays from the brink of extinction. It’s the only way to give these species a fighting chance at survival,” a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Study finds important Nassau grouper spawning site in Belize near collapse
- The Nassau grouper (Epinephelus striatus), a large-bodied top predator, was once the most abundant and commercially important fish in the Caribbean.
- Each winter, the groupers gather en masse at special places to breed, but many of these so-called fish spawning aggregation sites have been dwindling or succumbing entirely to overfishing.
- A new study looked at an important spawning site at Northeast Point on Glover’s Reef Atoll in Belize and found that the number of Nassau groupers attending the annual gathering declined by 85% over the past two decades and is now “on a trajectory towards local extirpation.”
- It attributes the decline to the government’s limited capacity to enforce regulations aimed at protecting the groupers from fishing at the remote site.

Lethal dose of plastic for seabirds and marine animals ‘much smaller than expected’
- A new study looking at the impacts of plastic ingestion by seabirds, sea turtles and marine mammals found that relatively small amounts of consumed plastic can be deadly.
- The research analyzed the necropsy results for more than 10,000 animals and quantified the amount of plastic that could prove deadly as well as the types of plastic with the biggest impact, which included synthetic rubber, soft plastics (such as plastic bags and wrappers) and discarded plastic fishing gear.
- Overall, one in five of the deceased animals had consumed plastic (affecting 50% of all studied sea turtles, 35% of seabirds and 12% of marine mammals); nearly half of the species studied were considered threatened or near threatened on the IUCN Red List.
- The researchers didn’t consider other health impacts of plastic, such as chemical exposure and entanglement, which led the lead author to conclude the study likely underestimates the “existential threat that plastic pollution poses to ocean wildlife.”

Offshore fossil fuel exploration jeopardizes Brazil’s climate leadership, study says
- Ahead of the COP30 U.N. climate summit in Brazil, a report by environment-monitoring organization SkyTruth mapped the environmental impact of the advance of offshore exploration for fossil fuels in Brazil, criticizing the country’s unfulfilled energy transition promises.
- The study detected 179 probable oil slicks in Brazilian waters since 2017, as the oil and gas sectors boomed. Analyses showed that traffic from fossil-industry vessels grew by 81% between 2012 and 2023, while methane burning skyrocketed — releasing into the atmosphere the equivalent emissions of 6.9 million cars annually.
- According to the investigation, Brazil still embraces environmentally controversial initiatives, such as oil exploration at the mouth of the Amazon River. This agenda brings risks to rich marine ecosystems and Indigenous and traditional communities, moving the country further away from its climate and conservation goals.

Trade in marine fish for aquariums includes threatened species, lacks oversight: Study
- A new study of major U.S.-based online retailers of marine fish bound for aquariums found that nearly 90% of traded species are sourced exclusively from the wild, including a number of threatened species, and that the trade is poorly tracked.
- The study raises concerns about the ecological impact of the trade on marine ecosystems, including around coral reefs, in countries such as Indonesia and the Philippines, where the fish are caught.
- Experts called for more work to develop sustainable fisheries and aquaculture in coastal communities in the Global South, and for building consumer awareness and establishing eco-certification schemes.

Construction of TotalEnergies pipeline cuts through coral reefs in Mozambique
- A Dutch company dredged through a highly sensitive coral area for TotalEnergies’ liquefied natural gas project in Mozambique, satellite imagery and vessel traffic data confirm.
- The French oil and gas company declared force majeure after insurgents attacked the facility in 2021, but some work on the project continued.
- Environmental groups warn that the environmental impact assessments for TotalEnergies’ project and three others in the same waters are inadequate.

Study maps whale shark stranding hotspots in Indonesia, highlights conservation needs
- A new study has identified whale shark stranding hotspots in Indonesia and linked them to seasonal ocean conditions, offering scientists a clearer picture of when and where risks are highest.
- The researchers found that most strandings involved juveniles and often occurred during upwelling seasons; they highlighted that human pressures such as fishing gear, ship traffic and pollution may further increase the danger.
- The study calls for stronger rescue networks, better community training, and international cooperation to improve survival rates and protect these migratory animals across the region.

Plans to dispose of mining waste in Norway’s Arctic Ocean worries Sámi fishers, herders
- Mining company Blue Moon Metals plans to dispose of its mining waste in Repparfjord, a nationally protected salmon fjord in the Norwegian Arctic that Indigenous Sámi fishers rely on.
- When operational, the Nussir ASA copper mine will deposit between 1 million and 2 million metric tons of tailings at the bottom of the fjord annually, according to the company’s permit.
- The Norwegian Environment Agency told Mongabay that the company plans to place its mining waste into the fjord in a controlled manner to limit the dispersal of harmful residues.
- Some Sámi residents, whose livelihoods depend on fishing and reindeer herding, told Mongabay they fear the tailings and mine will destroy vital marine habitats for salmon and disrupt traditional reindeer breeding and migration areas.

Pakistan declares its third marine protected area, but has a long way to go
- In September, Pakistan declared its third marine protected area, around Miani Hor Lagoon on the country’s central coast.
- The biodiversity-rich lagoon hosts a lush mangrove forest, numerous bird species and threatened marine mammals.
- Conservationists welcomed the new marine protected area as a baby step toward meeting the country’s so-called 30×30 commitment to protect 30% of its land and sea by 2030. However, the new addition puts Pakistan’s total protected marine area at just 0.23% of its marine and coastal jurisdiction.
- The scope of protections for the new protected area remains to be determined. Local people expressed concern that restrictions could upend the livelihoods of the local community, which depends on the lagoon and mangroves and already lacks basic necessities.

Are Belize’s fisheries policies delivering?
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. Belize has built an enviable brand as a small country taking on a big problem: how to keep the sea alive while sustaining the people who depend on it. The story sells well. A 2021 debt-for-nature “blue bond” […]
Mongabay launches dedicated Oceans Desk to expand global reporting on marine ecosystems
- Mongabay has launched a dedicated Oceans Desk composed of a global team of journalists specialized in reporting on oceans, fisheries and marine conservation.
- The desk, which includes editors, reporters and program directors from across Mongabay’s newsroom, marks a strategic shift to deepen our coverage of marine ecosystems.
- Mongabay’s ocean reporting has already led to real-world impacts, including exposing corruption in Chilean marine protected area management and informing international sanctions on a Chinese fishing company related to illegal shark finning and abusive labor practices.
- The Oceans Desk marks a milestone in Mongabay’s growth over more than two decades and strengthens the organization’s ability to inform, inspire and sustain effective action on marine conservation worldwide.

Embrace ‘blue’ foods as a climate strategy at COP30, fisheries ministers say (commentary)
- The “blue” or aquatic foods sector is often overlooked as a climate strategy, despite its potential to help meet demand for protein with a smaller environmental footprint, fisheries ministers from Brazil and Portugal argue in a new op-ed at Mongabay.
- Many blue foods generate minimal carbon emissions and use modest amounts of feed, land and freshwater, and their increased consumption could cut annual global CO₂ emissions by a gigaton or more.
- “Brazil and Portugal stand ready to champion global efforts to harness and safeguard blue foods for climate mitigation and adaptation strategies, generating multiple benefits across sustainable development goals. We call on more countries to implement measures across the blue food sector that strengthen food security and climate strategies at COP30 and beyond,” the authors write.
- This post is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

‘Not good’: Ocean losing its greenness, threatening food webs
- The ocean is losing its greenness, a new study has found: Global chlorophyll concentration, a proxy for phytoplankton biomass, declined over the past two decades, especially in coastal areas.
- Phytoplankton are the base of the marine food web, supporting fisheries and broader ecosystems, so their decline could have far-reaching implications, experts say.
- The phytoplankton decline could hurt coastal communities that live off the sea, and affect the ocean’s ability to act as a carbon sink, the authors say.

Three tracks to rescue 1.5°C: fossil exit, forest protection, and nature’s carbon (commentary)
- Ilona Szabó de Carvalho, co-founder and president of the Igarapé Institute and of the Green Bridge Facility, argues that keeping global warming below 1.5 °C requires action on three simultaneous fronts: phasing out fossil fuels, ending deforestation, and scaling up natural carbon capture in forests and oceans.
- She contends that energy decarbonization alone is insufficient; protecting and restoring ecosystems such as forests, wetlands, and mangroves is essential for both emissions reduction and resilience, and must be backed by transparent finance and accountability.
- With COP30 approaching in Belém, her piece calls for an integrated, finance-backed plan that ties together clean-energy expansion, a time-bound zero-deforestation roadmap, and rigorous safeguards for community-led nature-based solutions.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Expedition charts Cook Islands seafloor, amid scrutiny over mining motives
- Between Oct. 1 and 21, a U.S government-funded vessel, the E/V Nautilus, conducted an expedition in the Cook Islands’ exclusive economic zone (EEZ), following an agreement between the U.S. and the Cook Islands to “advance scientific research and the responsible development of seabed mineral resources.”
- During the 21-day expedition, the E/V Nautilus mapped more than 14,000 square kilometers (5,400 square miles) of the Cook Islands’ seafloor while also documenting deep-sea biodiversity.
- Environmental activists protested the expedition, arguing it would help accelerate deep-sea mining in the Cook Islands. The crew of the E/V Nautilus, however, rejects the accusation.
- The Cook Islands government has issued three deep-sea mining exploration licenses, which will expire in 2027. One company operating in the Cook Islands has said it hopes to apply for an exploitation license in 2027.

Researchers define the importance of the ‘circular seabird economy’
In a review article published in Nature Reviews Biodiversity, researchers have introduced a new term to describe the importance of seabirds across land and marine ecosystems: the circular seabird economy. Although seabirds spend most of their lives at sea, they return to land to breed, often forming colonies of thousands of individuals. This influx of […]
Scientists call for stronger action to save Indonesia’s vanishing seagrass meadows
- Marine experts at the Indonesian Seagrass Symposium in Bali warned that seagrass ecosystems — vital for carbon storage, biodiversity and coastal protection — remain largely overlooked in national policy and conservation efforts.
- Seagrass coverage in Indonesia has fallen from around 30,000 km2 in 1994 to about 8,000 km2 today, with losses driven by pollution, mining, coastal development and sedimentation that reduces water clarity and habitat quality.
- Indonesia holds some of the world’s most extensive remaining seagrass meadows, estimated to store more than 30 million metric tons of CO2, making their protection crucial for both national and global climate goals.
- Scientists and conservation leaders urged stronger data collection, funding and institutional capacity to support restoration, monitoring and community participation, positioning Indonesia as a potential leader in seagrass conservation.

Ethanol plant spills harmful wastewater into Philippine marine reserve
A chemical spill from an ethanol distillery has put one of the Philippines’ largest marine protected areas at risk. A wall retaining the wastewater pond of an ethanol distillery plant collapsed on Oct. 24, causing about 255,000 cubic meters (67 million gallons) of wastewater to flow into Bais Bay in the central Philippines, according to […]
Antarctic conservation summit closes with stalemate on MPAs & krill fishing rules
- The annual meeting of the international body responsible for the conservation of Southern Ocean marine ecosystems concluded Friday with no progress on two contentious issues before it: the creation of new marine protected areas and the strengthening of regulations governing the fishery for krill (Euphausia superba), a species on which numerous iconic species of Antarctic wildlife depend.
- This year’s annual meeting of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) was particularly tense, due to a clash between two occasionally overlapping groups of countries: on one side, those working to establish new marine protected areas (MPAs), and on the other, those more focused on increasing krill fishing.
- CCAMLR has considered proposals to establish three large MPAs annually for years but has failed to pass them under its consensus-based decision-making process. This year was the same, due to vetoes of MPA proposals by Russia and China.
- The combination of a lack of will to reinstate previously agreed regulations governing the krill fishery and a new push to drastically increase the krill harvest suggests a change in direction at CCAMLR toward more permissive fishing.

Chaos on Cambodia’s Coast
Along Cambodia’s rapidly transforming coastline, illegal trawling, elite-backed development, and weak enforcement are driving marine ecosystems and fishing communities to the brink. This 2024 series investigates the institutional breakdown behind the country’s marine crisis, from ineffective patrols in protected areas to billion-dollar land deals displacing small-scale fishers. It examines the competing interests reshaping Cambodia’s coast, […]
Belize’s blue reputation vs. reef reality: Marine conservation wins, and what’s missing (commentary)
- For over a year, journalists from Mongabay and Mongabay Latam have been digging into issues related to the Mesoamerican Reef, the Western Hemisphere’s largest barrier reef system, which runs from Mexico’s Yucatán through Belize and Guatemala to Honduras.
- As part of that effort, which involves exploring both problems and solutions, Mongabay founder Rhett Ayers Butler spoke to experts and reviewed many reports, scientific papers, and stories.
- With its early leadership and significant funding, Belize has emerged as a linchpin in Mesoamerican Reef conservation and fisheries management. This summary brings together what various experts have said—highlighting gaps, issues, and actionable recommendations as they relate to Belize.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Night dives reveal hidden alliances between young fish and larval anemones
- A new study, drawing on nighttime underwater photography, documented previously unknown “symbiotic associations” between juvenile fish and larval anemones, with some fish staying close to the anemones, and others carrying them around.
- The study suggests the fish may gain protection from predators by associating with the toxic anemones, while the anemones could benefit from being transported by the fish to new parts of the ocean.
- An outside expert also proposed that anemones might receive additional benefits, such as nutrients from the fish’s excretions or from food scraps left behind.
- All of the experts emphasized that more research is needed to fully understand the dynamics of these relationships.

Scientists map Italy’s entire coast to guide seagrass and marine recovery
- Posidonia oceanica is a Mediterranean seagrass whose meadows act as a carbon sink, a coastal protector and a nursery for marine life.
- This ecosystem is under severe threat from human activities, including illegal trawling, pollution and boat anchoring, resulting in significant degradation and loss of biodiversity.
- Italy is employing sophisticated sensors to create an unprecedentedly detailed and comprehensive map of its entire coastline, including its Posidonia meadows, in an effort to improve management and conservation of its marine habitats.
- While large-scale mapping provides the blueprint, targeted protection and restoration efforts demonstrate that it’s possible to reverse the damage and bring life back to the sea.

Stronger arctic cyclones speed up polar melting, impacting global weather
Powerful winds are ripping through the Arctic, breaking up critical sea ice that once acted as a shield against disturbance from wind and waves. Scientists warn the loss of sea ice is speeding up the region’s ecological collapse and could disrupt weather patterns far beyond the Arctic, contributor Sean Mowbray reported for Mongabay. In the […]
On first International Day of the Deep Seabed, we seek stewardship and consensus (commentary)
- “I could not be more delighted to celebrate this inaugural International Day of the Deep Seabed,” writes the secretary-general of the International Seabed Authority (ISA) in a new op-ed at Mongabay.
- On Nov. 1, 2025, she notes that the world will for the first time mark a day that celebrates the great biodiversity of the planet’s mysterious deep seabed and its potential role in the future of humanity’s progress, while reiterating that consensus-building among member states and nongovernmental actors remains critical to ensure its stewardship.
- “Together, by delivering on our commitments under the Law of the Sea, we can ensure that this last great frontier remains a source of wonder, discovery, opportunity and shared benefit for all humankind,” she argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

In Mauritius, an NGO is tracking the sex life of corals to save them
- Mauritius will soon be home to one of the largest projects in the Western Indian Ocean aimed at restoring corals through sexual propagation.
- The scientific research for the Odysseo coral restoration initiative is led by U.S.-based nonprofit Secore, which has also worked in the Caribbean Sea and reported success in breeding heat-tolerant corals.
- The initiative aligns with a recent policy push by the Mauritian government to promote coral restoration through sexual propagation as opposed to through asexual methods.
- However, this method of coral restoration is in its nascency in this region, and Secore is currently focused on gathering knowledge that will help it choose species to breed, donor sites to collect sperm and egg cells, and transplanting sites for newly grown coral.

Mauritius rethinks coral restoration as reefs suffer from another mass bleaching
- The island nation of Mauritius is home to nearly 250 kinds of corals, but saw 80% of its corals bleached in the latest mass bleaching caused in part by climate change.
- Faced with lackluster results from an audit of restoration efforts earlier this year, the Mauritian government moved to reevaluate its coral restoration policy.
- The predicament of the island nation highlights concerns raised by some scientists who question whether coral restoration works in the face of mounting threats: from heat stress, ocean acidification and marine pollution.
- For now, Mauritius is not abandoning restoration but advocating a different path: promoting sexual propagation rather than the asexual means currently used in most coral restoration projects worldwide.

UK fish stocks in trouble as catch limits exceed scientific advice: Report
Nearly half of the United Kingdom’s most commercially valuable fish populations are either overexploited, critically low or both, according to a new report warning that the government continues to set catch limits above scientific advice. The report, “Deep Decline,” by conservation nonprofit Oceana UK, found that 17 of 105 U.K. fish stocks are both overfished […]
Report finds dangerous mercury levels, highlights mislabeling in shark meat sold in EU
- Nearly a third of shark meat samples taken from products sold in Europe contained dangerously high methylmercury levels, with all tope shark and almost a quarter of blue shark samples exceeding EU safety limits, a new study finds.
- Much shark meat is mislabeled under names like rock salmon, huss or veau de mer, leaving consumers unaware they’re eating shark and could be ingesting a potent neurotoxin.
- Methylmercury can’t be cooked out, builds up in human tissue and can cause lasting neurological harm. Meanwhile, shark populations are declining, threatening marine ecosystem stability.
- The study’s authors urge stricter labeling laws, tighter food monitoring and consumer education, arguing that eating apex predators is both ecologically and medically unsustainable.

Two years later, no closure for family of missing Ghanaian fisheries observer
- Samuel Abayateye, a father of two, tasked with monitoring a Ghana-flagged tuna-fishing vessel, was reported missing on Oct. 30, 2023.
- Two years on, his family still hasn’t receive any formal updates from the Ghanaian police or any other agency about what happened to Abayateye.
- The authorities haven’t shared the results of a DNA test on a body found a few weeks after Abayateye went missing, which the family believe was his.
- Mongabay made repeated attempts to contact the police, but didn’t receive a response about the case.

Why facts alone won’t save the planet
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. When I think about what makes someone care about the natural world, it rarely begins with statistics or graphs. It begins with a moment. For me, it was an encounter I had at age 12 with frogs in […]
Australia celebrates ‘humpback comeback,’ but a main food source is under threat
News of Australia’s “humpback comeback” is making waves globally. Numbers of humpback whales (Megaptera novaeangliae) on the nation’s east coast have rebounded to an estimated 50,000 from a historic low of just a few hundred before commercial whaling was outlawed in the 1970s. And wildlife scientist and whale expert Vanessa Pirotta joins the podcast to […]
Mexico adopts protections for Atlantic sharks
Mexico recently adopted national regulations protecting several threatened shark species in the Atlantic from being caught or retained as bycatch. Shark conservationists welcome the protections but say they are long overdue, coming years after the country’s commitments to a multilateral fishery regulator. Mexican fisheries catch a significant number of various shark species in the Atlantic […]
Arctic seals edge closer to extinction as sea ice vanishes
- Three Arctic seal species have been moved up to higher threat categories on the IUCN Red List, with one now endangered and two now near threatened.
- Global warming is melting away the sea ice they need for breeding, resting and feeding, which has led to widespread breeding failures among ice-dependent seals.
- Loss of sea ice is also opening the region to more human activity, including shipping and oil exploration, bringing added disturbance, noise and pollution.
- The IUCN warns a similar pattern is emerging in the Antarctic. It says urgent global emissions cuts, along with stronger local protections such as reducing bycatch and pollution, are needed to prevent further declines.

Global conservation body takes first step to protect ocean’s twilight zone
- Delegates at the IUCN World Conservation Congress in Abu Dhabi voted to adopt a motion urging precautionary measures to protect the ocean’s mesopelagic zone.
- The nonbinding motion calls for prospective activities such as fishing in the mesopelagic zone, deep-sea mining and geoengineering to be guided by the best available science and approached with caution.
- Both conservationists and industry representatives expressed support for the motion, highlighting the mesopelagic zone’s ecological importance and potential as a sustainable resource.

Indonesia’s most vulnerable push for nation’s first Climate Justice Bill
- Climate change is forcing migration and deepening inequality across Indonesia, displacing rural residents, Indigenous peoples and those with disabilities — groups least responsible for the crisis.
- Fishers and farmers say they’ve been driven abroad by collapsing livelihoods caused by erratic weather, only to face exploitation and unsafe working conditions overseas.
- Indigenous and disabled communities are also seeing their food security, mobility and safety undermined, yet they remain largely excluded from government responses and public discourse.
- Civil society and affected groups are pushing for Indonesia to pass a Climate Justice Bill, which would enshrine climate justice as a constitutional right and protect vulnerable communities through coordinate national policy.

Radar study shows when offshore turbines pose greatest risks to migrating birds
- A new study looks at bird migration patterns over open ocean in an attempt to assess how much risk offshore wind turbines and other marine infrastructure might pose to them.
- The authors used radar data from U.S. coastal weather stations to find that hundreds of millions of birds migrate over tight windows of time in the spring and fall while flying at slightly lower elevations on average than over land.
- This puts a proportion of them at risk of being killed by wind turbines, but that risk could be mitigated with dynamic management that accounts for their patterns, according to the study.
- The Trump administration, in office since January, says it doesn’t support offshore wind development, but the research has long-term implications and could be used more immediately for mitigating the impact of offshore oil and gas projects.

Booming sea otters and fading shellfish spark values clash in Alaska
- In Alaska, a state brimming with iconic wildlife — from grizzly bears to king salmon, humpback whales to harbor seals — the charismatic, densely coated sea otter stands out as perhaps the state’s most hotly debated, controversial species.
- Sea otters were nearly hunted into extinction a century ago for their luxurious pelts. But they have been surging in population in the Gulf of Alaska, bringing both benefits to nearshore ecosystems and drawbacks to the shellfish economy (due to the otters’ voracious caloric needs).
- Described by commercial shellfish harvesters and Native Alaskans as pillagers of clams and crabs, sea otters are seen by many marine biologists as having positive impacts on kelp forests — important for biodiversity and carbon storage. Scientists stress that shellfish declines are complex, with sea otters being just one among multiple causes.
- Native Alaskans are the only people given free rein to hunt sea otters. But long-standing federal regulations stipulating who qualifies as Native Alaskan make it illegal for most to manage their own waters. Tribes are fighting for regulatory changes that would enable them to hunt and help balance booming sea otter populations.

Environmental groups slam Amazon oil drilling approval ahead of COP30
Brazil’s environment agency, IBAMA, has approved an environmental license for state-owned oil company Petrobras to drill for oil near the mouth of the Amazon River. The license, issued Oct. 20, allows the company start drilling the offshore Morpho well in oil block FZA-M-059, about 500 kilometers (311 miles) from the river’s mouth, and 2.8 km […]
Ghost nets entangling turtles, marine life in Sri Lanka’s waters
In Sri Lankan waters, there’s a growing problem of ghost nets that are entangling sea turtles, fish, dolphins and seabirds, reports contributor Malaka Rodrigo for Mongabay. “Ghost nets” are fishing gear that have either been abandoned, lost or discarded into the sea. As these drift with the ocean currents, they continue to trap marine animals […]
Rare dugong calf sighting in Alor spotlights seagrass & marine mammal conservation
- A rare sighting of a dugong calf in Alor, Indonesia, has renewed focus on the health of the region’s seagrass ecosystem and the species’ fragile future.
- Conservationists say the presence of multiple dugongs indicates a thriving habitat, but threats from tourism, habitat loss and limited population data remain pressing concerns.
- Authorities and experts are pushing for stronger monitoring and coordinated conservation strategies under a forthcoming national action plan.

South African sharks threatened by fisheries, weak enforcement
- The only permit holder in South Africa’s demersal shark longline fishery has been reported breaching permit regulations, raising questions about the sustainability of the fishery.
- The fishery targets critically endangered and endangered shark species with no catch limits in place to prevent overfishing.
- Target species are already depleted, according to scientific assessments, while little is known about bycatch of other protected and endangered species.

Mining the deep-sea could further threaten endangered sharks and rays
- A new study indicates that deep-sea mining could threaten at least 30 species of sharks, rays and chimaeras, many of which are already at risk of extinction.
- The authors found that seabed sediment plumes and midwater discharges of wastewater from mining activities could cause a range of impacts on shark, ray and chimaera species, including, but not limited to, disruptions to breeding and foraging, alterations in vertical migration, and exposure to metal contamination.
- The authors recommend precautionary measures, including improved baseline monitoring, the development of protected zones, and discharging wastewater below below 2,000 m (about 6,600 ft).
- With companies planning to begin deep-sea mining in international waters as early as 2027, the authors say more research is urgently needed to understand the full ecological impact of this emerging industry on biodiversity.

Unique diving paradise threatened by mine reopening
A nickel mine in Indonesia’s Raja Ampat archipelago was shut down in June after a mining ban, but operations restarted last September after the government claimed it was compliant with environmental requirements and could be considered a “green mine.” So what does the reopening mean? The mine pollution can threaten the world’s largest population of […]
Nations delay vote on shipping decarbonization rules after fierce US resistance
- The shipping sector was widely expected to become the first industry to adopt a binding set of global greenhouse gas emissions rules during an Oct. 14-17 meeting in London.
- Instead, member countries of the International Maritime Organization (IMO) committee voted to delay the decision until October 2026.
- The rules would have established emissions intensity limits that become more stringent each year, with substantial fees paid for noncompliance.
- The United States and other oil-exporting countries dominated much of the discussion in London as they sought to prevent the rules from being adopted, arguing that they amounted to an illegitimate international tax and that they would have dire economic consequences.

US blocks a global fee on shipping emissions as international meeting ends without new regulations
The U.S. has blocked a global fee on shipping emissions as an international maritime meeting ended Friday without adopting new regulations. The world’s largest maritime nations had been discussing ways to move the shipping industry away from fossil fuels. On Thursday, U.S. President Donald Trump urged countries to vote against the regulations. The International Maritime […]
Green turtle rebounds, moving from ‘endangered’ to ‘least concern’
The green turtle, found across the world’s oceans, is recovering after decades of decline, according to the latest IUCN Red List assessment. The species has been reclassified from endangered to least concern. “I am delighted,” Brendan Godley, a turtle expert from the University of Exeter, U.K., told Mongabay. “It underlines that marine conservation can work, […]
Vast freshwater reserves found beneath Atlantic seafloor
Scientists recently discovered vast freshwater reservoirs beneath the Atlantic seafloor, stretching off the U.S. East Coast from the states of New Jersey to Maine. The find was “a beautiful scientific accident,” Brandon Dugan, a professor of geophysics at the Colorado School of Mines, U.S., and co-chief scientist on the expedition, told Mongabay in a video […]
Indonesia falls short in bid to increase its share of southern bluefin tuna catch
- The Commission for the Conservation of Southern Bluefin Tuna (CCSBT), a multilateral body that manages the stock of southern bluefin tuna, held its annual meeting Oct. 6-9 in Bali, Indonesia.
- Indonesia pushed for a larger share of the global catch, which is currently dominated by Australia and Japan, but CCSBT members instead kept each nation’s share unchanged.
- Members also agreed to once again fully fund a key stock monitoring program, and to set up a future meeting for discussion of seabird protection in the fishery, amid criticism from conservationists that the commission hasn’t done enough to protect seabirds.

State-NGO collaboration expands protection for Patagonia’s biodiversity hotspot
- A new provincial park in the province of Chubut aims to conserve one of Argentina’s most biodiverse stretches of coastline.
- The park is based on a conservation model that involves an NGO buying up private land and then donating it back to the provincial government in return for new legal protections.
- The park will complement existing legislation and the area’s existing status as a UNESCO Biosphere Reserve.
- Sustainable, low-impact tourism and a no-take fishing zone, which will support the local shrimp industry, are both set to give the region an economic boost.

Drone surveys offer early warnings on whale health and survival
- Scientists have deployed drones and are using photogrammetry to determine how climate change is impacting the health of whale populations.
- By collecting the measurements of whales, scientists are able to track how environmental factors impact the growth and reproduction of right whales off the coast of New England and orcas in Alaska.
- Using the data, they found that a marine heat wave in 2013 reversed the revival of the population in Alaska that had plummeted after the Exxon Valdez oil spill in 1989; they also noticed that the whales didn’t grow as much as they should have.
- The method also enabled scientists to detect pregnant whales well in advance, allowing them to monitor if the pregnancy was successful or not.

Abandoning Antarctic krill management measure threatens conservation progress (commentary)
- Until 2024, spatial limits across four sub-areas of the Antarctic Peninsula region had reduced the risk of concentrated fishing in areas preferred by whales, seals and penguins.
- The Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR) had taken an ecosystem-based approach, recognizing that effects of fishing can ripple through ecosystems; but with the recent lapse of its Conservation Measure 51-07, ships can now concentrate their fishing efforts in key wildlife foraging hotspots.
- This October, as delegates gather to discuss CCAMLR priorities, the authors of a new commentary argue that, “At stake is more than a fishing rule, but also the commitment to manage fisheries proactively, rather than reactively.”
- This post is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

First oarfish sighting in Sri Lanka highlights citizen science in marine protection
- Scientists have documented the first-ever record of an oarfish (Regalecus russellii) in Sri Lanka, a 2.6-meter (8.5-foot) specimen caught off the country’s western coast.
- The find expands the known distribution of oarfish into the Indian Ocean, offering a new baseline for studying this rarely seen deep-sea species.
- Meanwhile, another oarfish was recorded in India’s Tamil Nadu this year, while within 20 days, three oarfish have been recorded from Australia and New Zealand, puzzling naturalists.
- The importance of promoting citizen science and raising awareness among fishers is needed.

Global treaty to end subsidies for destructive fishing takes effect
A landmark global treaty to curb billions of dollars in government subsidies for overfishing took effect on Sept. 15, Mongabay contributor Elizabeth Fitt reported. The agreement marks the first time the World Trade Organization (WTO) has approved an environmental sustainability agreement in its 30-year history. The deal came into effect after Brazil, Kenya, Tonga and […]
Will California’s marine mammal conservation success come undone?
- With protection, many of California’s marine mammals — including whales, sea lions and seals — have made remarkable recoveries over the last half-century since bipartisan passage of the U.S. Marine Mammal Protection Act.
- However, climate-linked changes have now pushed the gray whale population into a state of collapse.
- Despite comebacks, marine mammals face a plethora of threats from pathogens, pollutants — including oil and plastic — disappearing food and more.
- In California, people and institutions are fighting for marine mammals and ocean biodiversity, but federal protections could be substantially weakened if proposed amendments to the Act move ahead.

A protected mangrove forest stands strong as Metro Manila’s last coastal frontier
- A Ramsar site described as the Philippine capital region’s last remaining functional wetland, Las Piñas-Parañaque Wetland Park is a vital sanctuary for more than 160 local and migratory birds.
- The wetland also serves as a haven for fish reproduction, bolstering regional fisheries, and serves as a buffer zone during storms.
- In March, the agency responsible for overseeing investments in large-scale reclamation projects put out a call for “lease or joint venture” proposals for the site.
- After facing public backlash, the agency quietly deleted the call, saying it is aware of the site’s ecological importance and does not plan reclamation projects within the park.

Octopus farming is a dangerous detour for marine conservation (commentary)
- Proponents of octopus farming claim it can reduce fishing pressure on wild octopus populations by supplying the seafood industry, and even suggest that these efforts could contribute to restocking wild populations in the future.
- In reality, they have a poor feed conversion rate, requiring a large amount of wild-caught marine protein to produce a relatively small amount of octopus, which risks exacerbating, rather than easing, pressure on wild fish populations and marine ecosystems that depend on them, the author of a new op-ed argues.
- “Octopus farming is a dead end masquerading as a solution. It does not address the root causes of wild population declines — it compounds them. The global community must resist the temptation to exploit another wild species under the guise of sustainability,” the author writes.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

What fuel will ships burn as they move toward net zero?
- Spurred largely by pending global regulations, the race is on to develop low- and zero-carbon fuels for ships and scale up their use.
- There are “bridge fuels” that could be used during a transition period or in a limited way for the long term, such as biofuels, and then there are options that are more sustainable at scale, such as green methanol and green ammonia.
- Experts continue to debate the pros and cons of green methanol and green ammonia, which are generally seen as the best options in the medium to long term.
- A net-zero framework for shipping that would drive the adoption of alternative fuels is coming up for a vote in mid-October at a meeting of the International Maritime Organization in London.

Marine life are thriving on Nazi missile debris in the Baltic Sea: Study
As Germany demilitarized after World War II, it dumped massive amounts of its leftover munitions into the Baltic Sea. A recent study has found that some of those submerged weapons, which are still releasing toxic compounds, now host more marine organisms than the sediments around them. In October 2024, researchers used a remotely operated vehicle […]
UK rejects total ban on bottom trawling in offshore marine protected areas
The U.K. government has rejected calls to fully ban bottom trawling in its offshore marine protected areas, despite evidence that the fishing practice tears up seabed habitats and releases large amounts of carbon. Bottom trawling involves dragging weighted nets across the seafloor, often crushing coral reefs and sponges while stirring up sediments. The huge nets […]
Philippines protects coral hotspot
The Philippines recently protected 61,204-hectares (151,200-acres) of the seas around Panaon Island, home to some of the healthiest and most climate-resilient coral reefs in the world. The waters are also rich in fish and host several threatened species such as the endangered whale shark (Rhincodon typus), the critically endangered hawksbill turtle (Eretmochelys imbricata), the endangered […]
Indonesia eyes seagrass zoning for blue carbon; experts urge community benefits
- Indonesia is moving to designate 17 seagrass habitats as national strategic areas for blue carbon, a plan that promises climate and community benefits but raises concerns over safeguards.
- The fisheries ministry says the zoning will help cut emissions, protect marine ecosystems and boost coastal livelihoods, with seagrass storing carbon far more effectively than rainforests.
- Experts welcome the initiative but warn it must avoid privatization, ensure fair benefit-sharing and guarantee transparent governance to prevent conflicts and elite capture.
- With Indonesia holding 11.5% of the world’s seagrass meadows, scientists stress the urgency of protection as the ecosystems vanish globally at alarming rates.

New conservation panel to focus on microorganisms crucial for human and planet health
The IUCN, the global wildlife conservation authority, has established a new expert group that will help shape conservation priorities for a previously overlooked but vital group of organisms: microbes. In a recent commentary, the Microbial Conservation Specialist Group (MCSG), formed in July, announced that it will look at the status and threats to various beneficial […]
Illegal fishing threatens unique marine ecosystem in Peru
- Park rangers who patrol Illescas National Reserve often confront fishers who use chinchorros, a type of fishing net that is banned in Peru.
- The reserve is designated solely as a terrestrial protected area, which often limits the park rangers’ ability to act, as the marine area is outside their jurisdiction.
- Conservationists warn of the urgent need to safeguard this important marine area and its rich biodiversity.

The world’s oceans face triple planetary crisis: Report
A new report on the state of the world’s oceans paints a grim picture. The ninth annual Copernicus Ocean State Report finds “No part of the ocean is untouched by the triple planetary crisis, as pollution, biodiversity loss, and climate change are putting pressure on the ocean worldwide.” The EU-funded report draws on decades of […]
From South America to Asia, seahorses vanish into trafficking pipeline
- In June 2025, Ecuadorian police seized a package containing almost 3,000 seahorses that were likely destined for Colombia.
- Most seahorses are caught in industrial and artisanal trawl nets as bycatch, but they are then funneled into a lucrative illegal trade.
- Researchers have identified the busiest trafficking routes: Peru to China, Hong Kong and Vietnam.
- Seahorses are in high demand for use in traditional Chinese medicine, and are also sold as trinkets and as exotic additions to aquariums.

Northeast Pacific endures fourth-largest marine heat wave on record
The Northeast Pacific ocean, off the U.S. West Coast, is experiencing its fourth-largest marine heat wave since record-keeping began in 1982. “The extent of the current Pacific marine heatwave should be surprising … but unfortunately, record breaking heat is our new norm,” Chris Free, a marine scientist at the University of California, Santa Barbara, told […]
Conservation in a hotter world
- Protected areas designed for yesterday’s climate are losing relevance as species shift habitats, spurring calls for larger, connected, and “climate-smart” reserves that can accommodate ecological change
- Conservationists are adopting once-controversial strategies such as assisted colonization and rewilding to help ecosystems endure hotter, drier, and more chaotic conditions.
- The promise of sustainable livelihoods tied to static ecosystems is fading, and new models will depend on managing shifting resources and co-designing resilience with local communities.
- NOTE: Mongabay recently produced a series of articles and videos on this topic. This post recaps some of the key themes that emerged.

California’s kelp forests struggle to recover a decade after collapse
More than 10 years after unusually high water temperatures in the Pacific Ocean killed off Northern California’s aquatic kelp forests, the region has still not recovered, reports David Helvarg, executive director of ocean conservation group Blue Frontier, for Mongabay. From 2013 to 2017, a mass of unusually warm water nicknamed “the Blob” hugged California’s coast, […]
Study spotlights West Papua habitat as whale sharks face increased pressures
- A new study shows the Bird’s Head Seascape in West Papua is a crucial nursery for juvenile whale sharks, where most sightings involved young males feeding around fishing platforms.
- Researchers documented 268 individuals over 13 years, with more than half showing injuries tied to human activity, raising concerns about fisheries, tourism and emerging mining pressures.
- Scientists warn that protecting these habitats with stricter rules and better management is essential for the survival and recovery of the endangered species.

Long-lost white shark tag traces remarkable journey from South Africa to SE Asia
- The discovery of a satellite tag from a subadult female white shark in Indonesia marks the first recorded connectivity of white shark movement between South Africa and Southeast Asia.
- The white sharks found in South Africa and Australia belong to different genetic pools, which makes the two populations distinct from one another, even though they share the same migratory route.
- The biggest threats facing white sharks in South Africa and Indonesia are unsustainable fishing, where the sharks become both the bycatch and main catch.
- While there are attempts to support local fishers to pioneer shark conservation instead of hunting them, such efforts are thwarted by lack of funding.

How we probed a maze of websites to tally Brazilian government shark meat orders
- A recent Mongabay investigation found widespread government purchases of shark meat in Brazil to serve in thousands of public institutions.
- The series has generated public debate, with a lawmaker calling for a parliamentary hearing to discuss the findings.
- Here, Mongabay’s Philip Jacobson and the Pulitzer Center’s Kuang Keng Kuek Ser explain how we built a database of shark meat procurements.

As Sri Lanka struggles with ghost nets, volunteer youth lead seabed cleanup
- Abandoned, lost or discarded fishing gear, commonly called “ghost nets,” continue to trap and kill marine animals such as sea turtles, dolphins and whales, long after these nets being discarded in Sri Lankan waters.
- As this fishing gear can travel long distances via winds and ocean currents before sinking, it accumulates along shorelines or converges in large plastic patches in the oceans, becoming a transboundary issue.
- Volunteer initiatives such as The Pearl Protectors are diving to remove ghost nets, successfully recovering tens of hundreds of kilograms of discarded fishing gear from coral reefs and seagrass beds.
- While recycling efforts continue, a Sri Lankan designer has pioneered an innovative upcycling approach, transforming ghost fishing nets into fashion items — merging marine conservation with sustainable creativity to raise awareness of ocean pollution.

From Chile to Greece, ‘ghost gear’ from fish farms haunts the seas
- Studies and NGOs have documented lost or abandoned gear from open-net aquaculture operations in coastal areas across cold and temperate latitudes, where fish farming in the sea expanded rapidly in the 1980s and ’90s.
- In Chile, Greece and Canada, for example, observers have reported finding disused buoys, sections of rusting platforms, expanded polystyrene, net cages and other debris washed up on shorelines, or sunk in the water.
- Guidelines published by the Global Ghost Gear Initiative (GGGI), a worldwide alliance of groups seeking solutions to fishing gear pollution, say neglected or mismanaged aquaculture gear can disperse in the environment and break down into debris of various sizes, posing risks such as entrapping marine life, damaging habitats or contributing to microplastic pollution.
- Some industry groups say current regulations and practices suffice to prevent ongoing pollution and they are working to resolve legacy contamination.

Scientists weigh giant sea curtain to shield ‘Doomsday Glacier’ from melting
- Scientists have proposed using anchored seabed curtains to block warm ocean water from accelerating ice loss at Antarctica’s rapidly melting Thwaites Glacier — a possible climate fix that falls into the realm of geoengineering.
- Thwaites is losing 50 billion metric tons of ice annually and could raise sea levels by more than 60 cm (2 ft) if it collapses.
- Critics warn that a handful of proposed geoengineering projects in the world’s polar regions distract from decarbonization efforts, while supporters argue some geoengineering may be a necessary last-resort measure as governments fail to address rising greenhouse gas emissions.
- The curtain project could cost up to $80 billion, scientists estimate, but may prevent trillions in climate-related damages.

‘Super big deal’: High seas treaty reaches enough ratifications to become law
- The agreement on marine biodiversity of areas beyond national jurisdiction, also known as the high seas treaty, was reached in 2023 with much fanfare in marine conservation circles, partly because it sets up a system for establishing marine protected areas (MPAs) in international waters.
- On Sept. 19, Morocco became the 60th country to ratify the deal, which means it will become binding international law in January 2026.
- Experts and advocates celebrated the milestone, calling it a win for conservation and international cooperation.
- Uncertainty remains in how the treaty will interact with other regulatory regimes for fishing and mining, among other activities.

EV trial among Bali east coast fishers shows promise amid headwinds
- A social enterprise initiative to equip traditional fishing boats in east Bali with battery-powered engines has shown some encouraging responses among the trial cohort.
- More than 90% of the world’s 40 million fishers are small-scale operations working from small boats, which policymakers say are better suited to adopt electric vehicles compared with larger vessels.
- Azura Indonesia, the company manufacturing electric maritime engines, hopes new charging infrastructure will help overcome commonly cited challenges, including the need for inexpensive, frequent charging required by traditional fishers.
- The electric vehicle trial in Kusamba village was conducted under the Bali Net Zero Emissions Coalition’s energy transition work on the island of 4.5 million.

Panama upwelling fails in 2025, threatening marine ecosystems
Every year in the Gulf of Panama, between December and April, trade winds from the north push warm surface water away from the coast, allowing cool, nutrient-rich water from the depths to rise, in a process called upwelling. This is critical for the region’s marine life and fisheries. However, for the first time in at […]
Iberian orcas sink sailboat in latest ramming ‘game’ in Portugal
Five people were rescued after a pod of critically endangered Iberian orcas rammed into a sailboat several times, causing it to sink off Portugal’s Costa do Caparica, near the nation’s capital, Lisbon, on Sept. 13. None of the people on board suffered any injuries, according to the Portuguese maritime authority. The boat, owned by yacht […]
Rising seas won’t reduce ocean borders of small island nations, UN court rules
A landmark opinion from the United Nations International Court of Justice has ruled that rising sea levels caused by climate change do not require countries to redraw their maritime borders. Small island nations, among the most vulnerable to sea level rise, are hailing the decision as a victory against a threat to their sovereignty. In […]
São Tomé and Príncipe commits to creating a marine protected area network
- São Tomé and Príncipe will establish eight marine protected areas (MPAs) covering 93 square kilometers (36 square miles) of coastal habitats in the Gulf of Guinea.
- The island nation aims to protect its marine environment while improving the lives of fishing communities, who rely heavily on fish for protein.
- Current challenges include the decline of pelagic fish stocks and loss of biodiversity due to indiscriminate fishing practices and climate change.
- The law designating the MPAs is expected to be enacted in September.

Most Caribbean coral reefs to stop growing by 2040, study warns
Most coral reefs in the Caribbean could stop growing, and even start eroding away, by 2040 if global warming continues unchecked, a new study finds. Coral reefs, especially those near shores, protect valuable coastlines from flooding during cyclones and storm surges by breaking up wave energy. For the reefs to continue to act as natural […]
South African Wild Coast communities challenge Shell in Constitutional Court
A South African court heard arguments Tuesday from coastal communities, NGOs and British oil and gas giant Shell on whether the multinational should be allowed to proceed with offshore exploration on the country’s Wild Coast. The hearing was accompanied by protests against marine oil and gas exploration across the country. The case goes back to […]
Pet sharks have become cool, but is owning them ethical?
- Owning a shark and keeping it in a home aquarium has become cool — and it’s no longer just the province of tech bros and celebrities.
- But experts note that most home aquariums are inadequate and can lead to stunted growth, deformities and early death.
- Yet sharks are often easy to buy, with some selling for as little as $90 online; zebra sharks (Stegostoma tigrinum), which are endangered, go for around $6,000.

24 years on, part one of WTO treaty curbing fisheries subsidies takes effect
- The first part of the WTO’s treaty banning harmful fisheries subsidies, known as Fish One, entered into force Sept. 15 after more than two decades of negotiation and three years of ratification.
- It bans subsidies for IUU fishing and exploitation of overfished stocks while requiring parties to the treaty to disclose detailed data on fleets, catches and subsidy programs.
- Yet it allows certain subsidies to persist; for instance, for fishers targeting unassessed fish stocks or “managed” overfished stocks.
- The treaty will lapse in four years if no follow-up “Fish Two” deal can be reached, but negotiations remain stalled.

With global rules pending, can the shipping industry get more carbon efficient?
- The European Union and the International Maritime Organization have advanced shipping decarbonization regulations that will raise the price of maritime fuels.
- The push could lead to increased use of efficiency measures that reduce how much fuel vessels need in the first place.
- Such measures include everything from adding sails to ships to lubricating or redesigning hulls and optimizing routes or arrival times. These are cheaper and more immediately available than alternative fuels.
- Many associations and companies, particularly in Europe, are working to make efficiency gains as fast as possible.

Once again, an endangered orca in Washington state is seen carrying a dead calf
EASTSOUND, Wash. (AP) — Once again, an endangered orca in Washington state has been seen carrying her dead newborn calf in an apparent effort to revive it. Researchers with the Center for Whale Research, SeaDoc Society and San Diego Zoo Wildlife Alliance said they received reports on Friday that the whale — identified as J36 […]
Oysters could help fight climate change, study finds
New research from China suggests that oysters can be good at removing carbon dioxide from oceans, making the bivalves both an important food source and a potential tool in the fight against climate change and ocean acidification. Scientists have long debated whether oysters are a net source or sink of carbon dioxide (CO2) in the […]
Countries shorten tuna fishing closure at Pacific summit with few conservation ‘wins’
- The Inter-American Tropical Tuna Commission (IATTC), a multilateral body that manages tuna and other fish stocks in the Eastern Pacific, held its annual meeting Sept. 1-5 in Panama.
- Commission members agreed to shorten an annual fishing closure from 72 days to 64 days, which was in keeping with recommendations from the IATTC’s scientific committee.
- The members also agreed to move toward adoption, in 2026, of a long-term harvest strategy for bigeye tuna (Thunnus obesus).
- They didn’t adopt proposals to increase monitoring of longline tuna vessels and strengthen shark protection measures, due to resistance from East Asian members.

Indonesia reopens Raja Ampat nickel mine despite reef damage concerns
- Indonesia has allowed state-owned PT Gag Nikel to resume mining operations on Gag Island in Raja Ampat, despite a ban on mining small islands and a previous suspension imposed in June.
- A 2024 survey commissioned by Gag Nikel reported widespread community complaints of dust, health issues, sedimentation, and coral damage from barges — contradicting the government’s claims of minimal impact.
- NGOs say the “green” rating cited by the government to justify the resumption masks real destruction in Raja Ampat, one of the world’s richest marine ecosystems, and note the government has revoked other mining concessions in the area for similar impacts but not Gag Nikel’s.
- More than 60,000 people have signed a Greenpeace petition opposing mining in Raja Ampat, warning sedimentation could destroy coral reefs and threaten local livelihoods even as the nickel feeds Indonesia’s EV battery supply chain.

Experimental ocean climate fixes move ahead without regulation
Experimental climate interventions in the world’s oceans are moving ahead in a regulatory vacuum, raising concerns among scientists about potential risks, Mongabay staff writer Edward Carver reported. The projects, known as marine-climate interventions, aim to tackle global warming or help people and ocean life adapt to climate change. But a group of 24 researchers warned […]
An indestructible invasive anemone threatens Chilean Patagonia’s seas
- Native to the northern hemisphere, plumose anemones have spread across Chilean Patagonia.
- Scientists estimate that it was likely introduced in the late 20th century via ship ballast water.
- The exotic species occupies the seabed and displaces native communities of shellfish, mollusks and corals.
- The anemone’s presence is associated with a decline in biodiversity, and artisanal fishers are concerned.

Researchers describe three new-to-science snailfish species off California coast
In 2019, researchers surveying the seafloor off the coast of California came upon three unusual species of small fishes with large heads: one with bumpy pink skin, and the other two both black in color. The team collected the fish using underwater research vehicles and later analyzed their DNA and bodies. Their analysis showed that […]
Indonesia’s giant Java seawall plan sparks criticism & calls for alternatives
- Indonesia has launched a massive new project on Java’s northern coast, framed as protection for millions of residents from worsening environmental threats.
- The plan has drawn sharp criticism from experts and activists who question its methods, costs and potential impact on vulnerable communities.
- Calls are growing for deeper public consultation and long-term solutions that go beyond quick fixes.

Post-Blob, California’s kelp crisis isn’t going away
- Kelp forests function as major habitat for marine biodiversity, but are in rapid decline worldwide, largely because of climate impacts on the oceans.
- A 2013 marine heat wave known as “the Blob,” combined with the mass die-off of sea stars, caused a 95% loss of Northern California’s kelp forests.
- The loss of sea stars allowed the purple urchins that they thrive on to spread rapidly, converting lush kelp forests into “urchin barrens” in parts of California. There’s been very little recovery since.
- Restoration of kelp forests is extremely difficult and requires far more resources than are currently being committed.

Scientists tap ‘secret’ fresh water under the ocean, raising hopes for a thirsty world
ABOARD LIFTBOAT ROBERT, North Atlantic (AP) — Scientists conducting a first-of-its-kind drilling operation have extracted samples of fresh water hiding in massive reservoirs deep under the ocean. Their consortium of more than a dozen nations sank pipes through the seabed muck off Cape Cod this summer to see how old that water is, what organisms […]
Philippines protects huge coral hotspot off the coast of Panaon Island
The corals around Panaon Island in the southeastern Philippines form some of the healthiest and most climate-resilient reefs in the world, and they’re now a legally protected seascape. Philippine President Ferdinand Marcos Jr. approved the Panaon Island Protected Seascape law on Aug. 29. It creates a 61,204-hectare (151,200-acre) marine protected area within the Pacific Coral […]
Cruise industry expansion collides with Cozumel’s coral reef
- Mexico’s Cozumel Island is one of the most popular cruise ship destinations in the world, hosting more than 4.5 million tourists every year.
- A plan to build a new pier for cruise ships has attracted concern from Cozumel residents and conservationists, who say it will damage the surrounding reef and block public access to the sea.
- The company behind the project, Muelles del Caribe, maintains the pier will bring financial benefits to the community.
- Conservationists assert that the project’s environmental impact assessment was insufficient; in July, a court ordered a temporary suspension of the project to allow for a more thorough environmental assessment.

Climate change is driving fish stocks from countries’ waters to the high seas: Study
- A new study found that more than half of the world’s straddling stocks will shift across the maritime borders between exclusive economic zones (EEZs) and the high seas by 2050.
- Most of these shifts will be into the high seas, where fisheries management is much more challenging and stocks are more likely to be overexploited.
- Among the most serious potential consequences is a loss of fisheries resources for many tropical countries that did little to create the climate crisis, including small island developing states in the Pacific Ocean.

Scientists warn ocean-based climate fixes lack rules and oversight
- Marine-climate interventions have received increased money and attention in recent years.
- While many projects and ideas may be well-intentioned, they’re generally not subject to strong governance or oversight, and they often pose risks of social and ecological harm, according to a new paper.
- The authors call for local, national and global rules that will make interventions “safe, equitable and effective.”

Sharks risk losing their bite as oceans turn acidic: Study
Sharks continually shed and regrow teeth throughout their lives, replacing worn or lost teeth with new ones. That makes them particularly good at catching prey. However, these top marine predators could lose their literal edge as ocean acidification damages their teeth and makes it harder to keep and replace them, a new study says. “Shark […]
Mongabay shark meat exposé sparks call for hearing and industry debate
- A Brazilian lawmaker said he would call for a parliamentary hearing after Mongabay’s shark meat investigation.
- Experts reacted to the investigation, saying the uncovered public tenders show greater extinction risk for sharks and urging stronger global protection.
- Industry groups called Mongabay’s investigation “alarmist,” defending shark meat’s safety and sustainability, despite warnings from scientists.

Sunscreens protect us but also pose real planetary health concerns
- Sunscreens have become an important part of people’s sun management routine, protecting skin from harmful solar UV radiation. But many of these products contain chemicals that can be harmful to saltwater and freshwater ecosystems, while preliminary findings indicate some ingredients can have health effects.
- Ultraviolet filter chemicals and mineral components found in sunscreens can harm marine species such as corals and help trigger bleaching. In recent years, numerous studies have shown that many of these chemicals persist in the environment and can impact seagrass, fish and other marine life.
- More research is needed to understand the full environmental and health impacts of chemicals used in sunscreens. New formulations using ingredients proven to be safe are required, say analysts, and makers should improve product labelling to better inform consumers, with government regulation potentially necessary.
- Experts also urge caution, noting that while there are environmental concerns surrounding sunscreen chemicals, this should not be understood as a call not to use these products.

Why the BBNJ treaty on marine biodiversity matters more in the Mediterranean (commentary)
- The Mediterranean Sea covers less than 1% of the world’s ocean surface, yet hosts more than 18% of its known marine species, while being beset by unresolved maritime boundaries plus growing pressure from climate change, overfishing and pollution.
- That’s why this marine ecology hotspot needs the new U.N. treaty on oceanic biodiversity (BBNJ), as it offers a unique chance for Mediterranean countries to cooperate on common ground: despite claims that it lies outside of the scope of the agreement, there are legal grounds to claim the contrary.
- “Vast areas of the Mediterranean remain undelimited and unclaimed, existing in a legal gray zone. Under international law, these areas are considered de facto beyond national jurisdiction and therefore within the geographical scope of the BBNJ Agreement,” the authors of a new op-ed argue. “By mobilizing diplomatic, legal and financial resources through its institutions and member states, the EU can help catalyze broader regional ratification and implementation.”
- This post is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

Can we undo extinction? A growing effort to restore lost sharks
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. In the turquoise shallows of Raja Ampat, Indonesia, a conservation experiment is attempting the rewilding of an endangered shark. The initiative, known as ReShark, seeks to restore populations of the Indo-Pacific leopard shark (Stegostoma tigrinum), also called the […]
How science links extreme weather disasters to climate change: Interview with WWA’s Clair Barnes
- Scientifically attributing extreme weather events like floods or drought to climate change versus other natural processes or human activities is tricky.
- But since 2014, the World Weather Attribution, an international network of researchers, has pioneered methods that allow them to understand the role of human-induced climate change in current extreme weather events, if at all.
- Mongabay’s Kristine Sabillo recently spoke with WWA researcher and environmental statistician Clair Barnes to learn more about how WWA conducts its rapid analyses.

Indonesia’s Bajau fishers lament nickel mining’s marine pollution
For many members of the nomadic Bajau sea tribe on Indonesia’s Kabaena Island, growing up meant swimming and fishing in clear waters, just outside their homes built on stilts. However, in 2010, the water turned red, which the villagers blame on runoff from nearby nickel mining, Mongabay’s Hans Nicholas Jong reported in July. “Now, I […]
Study uncovers laundering of Galápagos iguanas through wildlife export permits
- All four species of Galápagos iguanas are categorized as threatened on the IUCN Red List and require permits for international trade — something the Ecuadorian government doesn’t issue for live specimens.
- Despite this, 60 Galápagos iguanas are known to have been shipped across the globe under supposedly legal permits, according to a new study.
- The study authors suggest the trafficked species have been “laundered” — reported as captive-bred specimens — to make their international trade appear legal.
- Ecuador is working on a proposal to strengthen the protection of the four iguana species.

Philippine fishers struggle as LNG ‘superhighway’ cuts through biodiversity hotspot
Fishers in the Philippines’ Batangas Bay are struggling to make ends meet and feed their families as nearby coastal areas are developed into a natural gas import hub, Mongabay contributor Nick Aspinwall reported in July. Families that have been fishing in Batangas Bay for years have been asked by local officials to leave to make […]
Argentina’s elephant seals face 100-year recovery after avian flu devastation: Study
- At the end of 2023, an outbreak of avian flu devastated a colony of southern elephant seals in Argentina’s Valdés Peninsula.
- It may take a century for the population to return to the 18,000 breeding females it had in 2022, according to projections from a new study.
- Researchers estimate that 17,500 pups and an undetermined number of breeding adults died as a result of the outbreak, which also killed seabirds in the area.
- The previously healthy population is now vulnerable and faces an uncertain future.

Community efforts yield new marine protected area in the Philippines
The Philippines has officially designated a new marine protected area after an 18-year campaign by local communities, fisher associations, civil society organizations and government agencies, the Wildlife Conservation Society announced Aug. 13. The newly created Bitaug Marine Protected Area (MPA), which covers nearly 150 hectares (about 370 acres), is the largest MPA in Siquijor province […]
Indonesia’s aquafarm revamp sparks fears for fate of farmers and mangroves
- Indonesia plans to revitalize 78,000 hectares (193,000 acres) of state-owned aquaculture ponds, starting with 20,400 hectares (50,400 acres) in West Java province, aiming to boost yields, create 119,000 jobs and attract investors.
- Small-scale farmers like Warno in Karawang district, who rent and maintain ponds from the state, say they fear losing their livelihoods without compensation if the government takes over their farms.
- NGOs and experts warn the program could fuel mangrove clearing, coastal damage and privatization of coastal areas, while sidelining local communities’ rights and voices.
- Critics also raise concerns over the government’s push for more farming of saltwater tilapia, citing risks from the invasive species and an industrial aquaculture model that could reduce locals to laborers.

Belize project seeks out heat-resilient corals to protect its reefs
- An initiative called the Super Reefs program is setting out to identify the corals in Belize’s waters that have the highest chance of surviving warming waters amid climate change.
- Researchers with the program have discovered that corals that grow in the hottest areas are naturally more heat-resistant.
- Massive starlet coral (Siderastrea siderea) tends to be tolerant of warm water, whereas symmetrical brain coral (Pseudodiploria strigosa) is more sensitive.
- The team plans to use its findings, which are to be published by 2026, to inform the Belize government which coral communities in the country are best suited for protection and restoration.

Deep-sea mining is a false solution to our challenges (commentary)
- A new op-ed argues that the case for deep-sea mining is weak and also that the facts used by its proponents don’t add up, but rather cloud their judgment.
- The divergence between scientific understanding of likely ecological harms and prevailing narratives — like the touted economic benefits, which could actually be costs — came into sharp focus at the recent annual meeting of the International Seabed Authority, which governs the development of this industry.
- “Given the high costs and severe environmental risks, why then pursue deep-sea mining? This activity threatens unique deep-sea ecosystems and could irrevocably alter ocean health, impacting life on land,” the author writes.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Ocean-based carbon storage ramps up, bringing investment and concern
- Storing captured carbon in the subsea — in depleted oil and gas wells or in aquifers — is ramping up as a climate solution, with projects planned across the globe by industry and governments.
- Tipped as a way to address “hard-to-abate” emissions from industries such as cement, steelmaking and chemicals, it’s hailed by proponents as a viable and necessary part of the transition to net-zero greenhouse gas emissions.
- But critics say offshore CCS poses great risks and will perpetuate a history of failure that has plagued onshore efforts to store carbon.
- It also raises environmental concerns, such as the potential for carbon leakage that could undermine climate efforts and harm marine life, contributing to already increasing ocean acidification.

There’s hope for sunflower sea stars, with their killer unmasked and reintroductions pending
- Since 2013, sea star wasting disease, worsened by warming oceans, has wiped out 99% of sunflower sea stars from Washington state to Mexico, collapsing kelp forest ecosystems.
- Researchers from the University of British Columbia and the Hakai Institute in Canada have pinpointed the bacterium Vibrio pectenicida as a key cause of the epidemic, confirming its lethal effects through lab experiments that replicated symptoms seen in the wild.
- A coalition of aquariums, nonprofits, Indigenous groups and government agencies has successfully bred sunflower sea stars in captivity for the first time, experimenting with fresh, frozen and cryopreserved sperm, and raising 72 juveniles in a Monterey facility with plans for controlled releases.
- Guided by the Pycnopodia Recovery Working Group and a 2024-2027 conservation plan, efforts have now turned to breeding, disease research, habitat protection, regulatory engagement and public outreach, with broad community support — including from fishers — for restoring this keystone predator.

Argentina pushes pipeline exports through protected Patagonian waters
- In Argentina, the construction of an oil port and a liquefied natural gas (LNG) terminal for ships threatens one of the most biodiverse areas in the southwestern Atlantic.
- The law that protected the area from these types of projects was amended without prior consultation in 2022.
- Oil spills, rising water temperatures, and ship strikes on the thriving whale population are among the greatest threats highlighted by critics.

New report warns 54% of turtles and tortoises are at risk of extinction
- More than half of the world’s 359 turtle and tortoise species now face extinction, with the crisis worsening despite global conservation efforts.
- Asia is the epicenter of the crisis, accounting for 32 of the 66 most threatened species due to intense harvesting, illegal trade and habitat destruction.
- The economics of extinction create a vicious cycle, where rarer species become more valuable to collectors, incentivizing further hunting of the few remaining individuals.
- Successful conservation projects include habitat protection, captive breeding, community engagement and adaptive management, with local communities playing a crucial role.

Seized corals find safe harbor in New York Aquarium
In May this year, wildlife inspectors for the U.S. Fish and Wildlife Service seized a shipment of 232 live stony corals at John F. Kennedy International Airport in New York. The corals are now being kept at New York Aquarium for rehabilitation and propagation, in the hopes of helping raise awareness about corals, the Wildlife […]
Third manta ray species confirmed in western Atlantic
There’s a third species of manta ray gracefully gliding through the seas, a recent study has confirmed. Researchers have named the newly described species, found in the western Atlantic, Mobula yarae after Yara, a water spirit from Indigenous Brazilian mythology. For a long time, manta rays were considered a single species, Manta birostris. In 1868, […]
How will fisheries change in a hotter world? Experts share
- Fifty years from now, in 2075, global ocean temperatures are forecast to rise by between 2° and 5° Celsius (3.6° and 9° Fahrenheit). Warming is already reshaping fisheries worldwide, and even more dramatic changes are expected as fish largely move to cooler latitudes.
- These fish migrations will change ecosystem patterns and will likely have unexpected consequences even in places far from the fish themselves. They also may devastate fishing communities, both on an economic scale and a social one.
- However, there are potential solutions to avoid the most catastrophic effects for fishers and ecosystems alike, including setting aside some ecosystems as marine protected areas, changing fisheries management strategies and retraining communities to provide supplemental income.

Brazil’s shark meat problem
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. The country best known for samba and soybeans has quietly become the world’s largest importer of shark meat. A recent investigation by Mongabay’s Philip Jacobson, Karla Mendes and Kuang Keng Kuek Ser reveals the extent to which this […]
Can we undo extinction? A growing effort to restore lost sharks
- ReShark is the world’s first shark rewilding program, aiming to restore Indo-Pacific leopard sharks to reefs where they’ve disappeared, starting in Raja Ampat, Indonesia.
- The initiative repurposes surplus eggs from aquariums, transporting them across oceans and rearing them in locally managed hatcheries before releasing them into the wild.
- A growing community of Indonesian conservationists—including trained “shark nannies,” students, and villagers—is central to the project’s success and sustainability.
- With global collaboration and scientific rigor, ReShark aims to produce a model for reversing extinction—one grounded in genetics, local stewardship, and public engagement.

Scientists identify the bacterium behind billions of sea star deaths
More than a decade ago, a mysterious illness killed billions of sea stars, particularly along the North American Pacific coast. The sea star wasting disease caused the stars to develop lesions, their arms to fall off and their bodies to disintegrate. Now, researchers in a recent study say they have zeroed in on the cause: […]
Revealed: Brazilian state buys endangered angelsharks for school lunches
Endangered angelsharks have been served to schoolchildren in the Brazilian state of Rio Grande do Sul for years, as well as in hospitals, clinics, shelters and other public institutions, Mongabay has found. We identified 52 tenders totaling more than 211 metric tons of “peixe anjo,” a common name for angelshark, issued by the state and city […]
Brazil serves potentially contaminated shark meat to children in public schools
Brazil has ordered at least 5,600 metric tons of potentially contaminated shark meat to serve in schools and other public institutions since 2004, a Mongabay investigation has revealed. Shark meat tends to have higher concentrations of toxic heavy metals, as top predators accumulate contaminants like mercury from lower down in the food chain. The contaminants […]
World’s first industry-wide climate mandate could be launched with shipping vote
- Shipping could become the first industry governed by a global treaty that sets enforceable decarbonization standards.
- In October, more than 100 nations will gather at a meeting of the International Maritime Organization (IMO) in London to potentially adopt a “net-zero framework” for the industry.
- In 2023, the IMO, a United Nations body that regulates shipping, developed a nonbinding strategy to decarbonize “by or around” 2050; the new framework would make that vision concrete and binding. Critics from small island developing states and environmental groups say the framework falls short of fulfilling the original vision.
- Some oil-exporting countries opposed the deal, arguing that alternative fuels are costly and unproven.

Anchovy-rich diet linked to vitamin deficiency and deaths among salmon, study
A new study links widespread deficiency of vitamin B1, or thiamine, among California Chinook salmon to their deaths. This adds yet another challenge for this iconic species whose population is already imperiled by climate change, habitat loss and overfishing. Salmon serve a critical ecological role in the Pacific Northwest, transporting marine nutrients from the ocean […]
Encouraging signs from a no-fishing zone in Comoros could inspire others
- Signs of improvement in fisheries arising from a small no-fishing zone in the Indian Ocean nation of Comoros could inspire the establishment of more such zones across the archipelago.
- A fishers’ group installed the first no-take zone inside a marine protected area off the island of Anjouan in 2021. The group’s president told Mongabay fishers are now encountering more fish nearer to the shore outside the zone’s bounds.
- Buoyed by the results, a local nonprofit plans to establish five no-take zones in Anjouan over the next two years, covering 425 hectares (1,050 acres) of coral reefs.
- Earlier efforts to enforce temporary fishing closures to promote octopus fisheries for export and reduce pressure on fragile coral reef ecosystems didn’t lead to the anticipated benefits.

Krill fishery in Antarctica shut down after record catch triggers unprecedented early closure
MIAMI (AP) — Officials have shut down early the remote krill fishery near Antarctica after trawling for the tiny crustacean — a vital food source for whales that also helps fight climate change — exceeded the seasonal catch limit for the first time. The unprecedented early closure of the fishery follows a report by The Associated Press last week […]
Former poachers guard Cabo Verde’s endangered sea turtles
- Conservation organizations are employing Cabo Verdeans, who formerly hunted endangered and threatened sea turtles, as rangers who now monitor and patrol beaches.
- From 2007-24, illegal catches of female turtles on one island plummeted from 1,253 to a mere 20, while nesting sites of vulnerable loggerhead turtles increased sevenfold, according to data by a conservation NGO.
- Locals traditionally consume turtle parts, use them in traditional medicine and now sell them in black markets; however, conservation activities, legislation and tourism have led to a reduction in turtle harvesting, researchers say.
- Conservationists say threats persist for sea turtles from at-sea captures, industrial fishing and plastic pollution, and that stricter laws and increased participation of the fisher community in conservation activities are needed.

Requiem for the nearly lost
Founder’s Briefs: An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. They are not yet gone. But for thousands of species, the Earth is already holding its breath. A new review published in Nature Reviews Earth & Environment confirms what conservationists have long suspected: more than 10,000 species now […]
UN meeting closes with no moratorium on deep-sea mining; groups lament
Civil groups expressed dismay as the 30th International Seabed Authority (ISA) session recently ended in Jamaica without a moratorium on deep-sea mining, a process of extracting minerals from the seafloor, which experts say can damage marine ecosystems. The ISA Council finished the second reading of the draft regulations for the commercial exploitation of deep-sea minerals. However, the […]
When the sea takes over: Voices from a climate-displaced community in Mexico
TABASCO, Mexico — Flooding caused by rapid sea-level rise and increasingly intense storms has decimated the coastal town of El Bosque in Tabasco, Mexico. Between 2019 to June 2024, at least 70 homes in the community were destroyed by the sea. Most of its residents have been relocated to a site further inland by the […]
A sales-pitch pivot brings deep-sea mining closer to reality
Early on, Canada-based The Metals Company cast the rocks it seeks to mine from the deep seafloor as a crucial resource for electric vehicle batteries and other green technologies, positioning them as a solution to the accelerating climate crisis. However, in 2024, another message overtook the first in TMC’s communications, according to an analysis by […]
First record of Cape clawless otter preying on African penguins: Study
The critically endangered African penguin has several predators to fear, including gulls, seals and sharks at sea, and leopards, caracals, domestic dogs and mongoose on land. A recent study has now documented the first confirmed case of yet another predator: a Cape clawless otter was observed preying on the African penguins of a mainland colony. […]
Malaysia’s turtle egg buyback scheme saved thousands — but is it sustainable?
- A recent study assessed the effectiveness of Malaysia’s decades-old sea turtle egg buyback scheme, which aims to prevent eggs from entering the illegal wildlife trade by purchasing them from licensed collectors and relocating them to hatcheries.
- Between 2016 and 2021, more than 71,000 green turtle eggs were purchased and relocated, resulting in high hatching (77.6%) and emergence (74.1%) success rates — highlighting the scheme’s biological effectiveness despite covering only a small fraction of total nests.
- The study flagged significant financial and logistical challenges, including rising costs, seasonal erosion, inconsistent cooperation from collectors, and limited capacity to purchase all available eggs, prompting concerns about long-term sustainability.
- With a statewide ban on turtle egg trade now in place, researchers and experts question whether the buyback model should continue, suggesting alternative strategies like nonextractive income opportunities and stronger enforcement against illegal trade.

Guarding Mexico’s blue frontiers: A conversation with Alejandro González
- Alejandro González has spent nearly 20 years advancing marine conservation in Mexico, leading efforts in iconic marine protected areas like Cabo Pulmo and Revillagigedo, where he combined fieldwork, enforcement, and diplomacy to protect remote ocean ecosystems.
- Now Director for Global Conservation in Mexico, González focuses on scaling enforcement through technology like Marine Monitor radar systems and strengthening institutional capacity to safeguard no-take zones such as the Islas Marías Biosphere Reserve.
- Grounded in community realities, he emphasizes the need to align conservation with local livelihoods—especially amid growing threats like cartel involvement in fisheries—and is motivated by a vision of protecting the ocean for future generations.
- González spoke with Mongabay Founder and CEO Rhett Ayers Butler aboard a ship off the Revillagigedo Archipelago in June 2025.

As gas giants move in, Philippine fishers fight for their seas and survival
- Fishing communities along the Philippines’ Verde Island Passage, a haven for marine biodiversity, say the development of a natural gas import hub in the area is leading to environmental degradation.
- Fishers say their catches have declined since a liquefied natural gas plant was built in the area a decade ago, and that they’re being turned away from remaining fishing grounds due to the ongoing construction of an LNG terminal.
- The Japan Bank for International Cooperation, a key funder of the LNG project, denies these claims, saying in a recent report that it didn’t find evidence that LNG development had led to environmental degradation or a reduction in income for local fishing communities.

That ‘fish’ on the menu? In Brazil’s schools and prisons, it’s often shark
Brazil, the world’s top importer of shark meat, is feeding much of it to preschoolers, hospital patients, military staff, public workers and more via government procurements, Mongabay has found. This influx of shark meat into public buildings is exposing infants and other vulnerable groups to high levels of heavy metals like mercury and arsenic, which […]
Sri Lanka Supreme Court orders $1 bn payment in X Press Pearl marine disaster
- Sri Lanka’s Supreme Court has ordered $1 billion in compensation from the owners and local agents of the MV X-Press Pearl, which sank off Colombo in 2021, causing the worst maritime disaster in the island’s history and a massive marine plastic spill.
- The court held both the vessel’s operators and two former Sri Lankan officials accountable, citing negligence and violations of citizens’ constitutional rights.
- The July 24 ruling calls for the establishment of an independent compensation commission and requires the first installment of damages to be paid by September 2025, with a review hearing scheduled for the same month.
- Environmentalists describe the judgment as a milestone in line with the “polluter pays” principle, offering a potential model for environmental justice across the Global South.

Coral restoration after devasting Deepwater Horizon spill shows promise
When BP’s Deepwater Horizon oil rig exploded in the Gulf of Mexico in 2011, it led to the largest oil spill in U.S. history, severely damaging marine ecosystems. Part of the settlement money that BP agreed to pay has since been used for a deep-sea restoration project that has achieved significant milestones in spawning corals […]
Photos: Mangrove photography awards showcase a diverse & fragile ecosystem
The winners of the 11th annual Mangrove Photography Awards (MPA) have been announced. The contest, hosted by the U.S.-based Mangrove Action Project, showcases powerful photographic narratives highlighting the importance of one of the planet’s most vital ecosystems. This year, a record-breaking 3,300 entries from 78 countries entered to win in one of six categories: wildlife, […]
Reversing damage to the world’s mangrove forests
Mangroves are an important lifeline for biodiversity, climate and coastal communities. Yet they are disappearing 3-5 times faster than total global forest losses, according to UNESCO. On July 26, celebrated as the International Day for the Conservation of the Mangrove Ecosystem, we present recent stories by Mongabay’s journalists on emerging threats to these critical ecosystems […]
Scientists find millions of tons of nanoplastics in the North Atlantic Ocean
Scientists have measured the amount of nanoplastics in the open ocean for the first time and found they make up the vast majority of marine plastic pollution. Plastic debris in the ocean can be of varying sizes. Nanoplastics are the tiniest, about 1,000 times smaller than the smallest microplastics — small enough to go through […]
Sri Lanka hit by plastic pollution after cargo ship sinks off Indian coast
Sri Lankan authorities, locals and environmentalists say they’re deeply concerned about the possible impacts on the country’s marine ecosystem and coastal communities from the sinking of a container ship off the southern coast of India in May, Mongabay contributor Malaka Rodrigo reported in June. The Liberia-flagged ship MSC Elsa 3 sank on May 25 about […]
Saving polar bears and beluga whales: Interview with Alysa McCall
- Beluga Cam is a long-running initiative that aims to document the migration of almost 57,000 beluga whales through Hudson Bay in Canada.
- The project is run by the nonprofit Polar Bears International in a bid to collect more data about beluga migration as well as to create more awareness about the species.
- The initiative got an upgrade this year with a new boat that houses the cameras and other equipment deployed for the work.
- As the Arctic rapidly loses sea ice, species such as beluga whales and polar bears bear the brunt in terms of losing access to food and their habitats.

Challenges persist in TMC’s bid to mine the deep sea, even after boost from Trump
After years of delay, the deep-sea mining plans of Canadian firm The Metals Company (TMC) now appear to be progressing as it pursues a controversial new path to securing a license to mine in international waters under U.S. jurisdiction. Yet critics and some industry observers question how smoothly TMC’s ambitious plans might unfold, citing the […]
Trump’s budget would end 7 decades of climate data collection
The Trump administration’s proposed 2026 budget for the U.S. National Oceanic and Atmospheric Administration (NOAA) cuts funding for several critically important national laboratories and observatories. On the chopping block is Mauna Loa Observatory in Hawai‘i, which has been recording atmospheric carbon data every day for nearly 70 years. Mauna Loa Observatory sits atop a volcano […]
Blue carbon ecosystems are key for protecting the Philippines from climate shocks (commentary)
- In the wake of historic typhoon activity in 2024, members of the Zoological Society of London (ZSL) and others are calling for scaled-up coordination and action to safeguard blue carbon ecosystems that increase local capacity to recover from climactic shocks.
- Community-led projects that offer opportunities to increase investment and bring security back to local communities like mangrove forest restoration are one key example of a blue carbon initiative that the National Blue Carbon Action Partnership (NBCAP) is implementing with the support of ZSL.
- “Coordinated action by NBCAP will enable these ecosystems to come to life, delivering both protection and income for coastal communities,” a new op-ed argues.
- This post is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

Darkest-ever dwarfgoby fish gets named after Darth Vader
From the volcanic fjords of Tufi in Papua New Guinea, researchers have described a new-to-science species of a coral reef fish called a dwarfgoby with an unusual purplish-black color. The tiny fish is the “darkest of all described dwarfgobies,” the researchers say in the study, naming it Eviota vader after the Star Wars villain Darth […]
Evolution in overdrive as Baltic cod shrink due to fishing pressure, study shows
- The eastern Baltic cod has shrunk dramatically in size in recent decades due to rapid evolution — changes at the genetic level — caused by decades of intensive fishing, a new study says.
- Eastern Baltic cod, which are a distinct subpopulation of Atlantic cod (Gadus morhua), lost nearly half of their length and four-fifths of their weight from 1996 until 2019.
- It’s one of the first studies to show that a marine species has evolved in response to fishing pressure.
- An expert said the shrinking of the cod was “alarming,” and called on fisheries managers to work to protect fish biomass and size, given this new evidence of fisheries-induced evolution.

Conservationists raise sharks to restore reefs in waters around Thailand
- A new rewilding program aims to boost the local population of bamboo sharks in the waters of Khao Lak, Thailand.
- The species, classified as near threatened on the IUCN Red List, used to be abundant in the area, but has declined as a result of overfishing and habitat destruction.
- Since the project launched in 2018, with the support of luxury resorts in the area, it has released 200 bamboo sharks into the wild.
- A separate program that started in May 2025, is breeding leopard sharks, which are listed as endangered. They will be released in the waters off Phuket, and eventually the Gulf of Thailand.

Louisiana cancels $3 billion coastal restoration project funded by oil spill settlement
NEW ORLEANS (AP) — Louisiana is officially canceling a $3 billion coastal restoration project funded by the Deepwater Horizon oil spill settlement. The Mid-Barataria Sediment Diversion Project aimed to rebuild over 20 square miles of land in southeast Louisiana to combat erosion and sea level rise. Conservation groups supported the project as a science-based solution […]
Indonesia moves to revise sea sand export policy after court ruling
- Indonesia’s Supreme Court earlier this year struck down key parts of a 2023 regulation allowing sea sand exports, citing legal contradictions and environmental risks.
- The annulled policy had reversed a two-decade ban and faced backlash for potentially harming marine ecosystems and coastal communities.
- The government now says it’s revising the regulation, arguing that dredging can benefit ocean health and support domestic infrastructure projects.
- Critics warn the practice threatens fisheries, marine carbon stores and long-term sustainability, and call for a shift toward restoration over exploitation.

Global tracking study reveals marine megafauna hotspots lie largely unprotected
- A global study tracking nearly 13,000 marine animals representing 111 species reveals they spend 80% of their time in just 63% of their range, yet only about 5% of these high-use ocean areas are currently protected.
- The research identifies Important Marine Megafauna Areas (IMMegAs) as ecological hotspots that span national waters and the high seas, where governance and protection are often lacking.
- Findings show that the global target of protecting 30% of the ocean by 2030 is insufficient to safeguard migratory species unless paired with additional mitigation measures outside protected areas, like bycatch reduction and ship speed regulations.
- Researchers call for stronger international coordination and more dynamic, movement-informed conservation strategies to effectively protect wide-ranging ocean wildlife.

Small island nations provide big environmental solutions but need finance partners (commentary)
- Small island nations offer the world powerful environmental solutions — from “blue” climate finance innovations to marine conservation — but they need the international community to match their ambition with fairness and support.
- Antigua and Barbuda Prime Minister Gaston Browne argues that for Small Island Developing States (SIDS) like his, navigating uncertainty is nothing new, but these days that must be increasingly tempered with fairness, as sea levels rise and marine ecosystems struggle due to a climate crisis that they did little to abet.
- “We face growing inequities, particularly around access to ocean resources and climate finance. Between 2000 and 2023, SIDS suffered more than $30 billion in losses from climate-related disasters, yet we are locked out of concessional financing due to narrow economic metrics. This is not just unsustainable — it is unjust,” he writes.
- This post is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

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