topic: Oceans

topic: Oceans

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Uncertainty about weakening Atlantic currents isn’t a reason to wait but to act (commentary)
- The Atlantic Meridional Overturning Circulation (AMOC) is the system of ocean currents that mediates weather on both sides of the Atlantic, and research suggests it’s shifting due to climate change in ways that threaten marine ecosystems, wildlife, agriculture and more.
- Though no one can yet prove how it’s changing and how soon, the latest research on the AMOC should be understood as a warning sign that the potential outcomes could be even more severe than projected, a new op-ed argues.
- “Discussions about AMOC weakening should not be confined to maps of temperature and rainfall. They should also be about biodiversity, fisheries, and the resilience of ocean ecosystems already under strain,” the author writes.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Amazon oil drilling plan excludes unique hybrid manatees too big for rescue
- Brazil’s environmental agency approved oil drilling off the mouth of the Amazon River, even though oil company Petrobras considers it “unfeasible” to rescue large animals like manatees in the event of an oil spill.
- Potential oil spills threaten a unique hybrid manatee population perfectly suited to live in the Amazon River mouth area.
- A simulation testing Petrobras’s wildlife rescue plan showed lack of basic supplies and boat accidents.
- The project is part of a massive new oil frontier in the Equatorial Margin estimated to hold 10 billion barrels of oil.

How we tracked China’s deep-sea mining fleet
- In March, Mongabay’s Elizabeth Claire Alberts and CNN International’s Kara Fox co-published an investigation into China’s deep-sea mining fleet’s ambitions and the alleged military dual uses of its oceanographic research ships. This project was supported by the Pulitzer Center, where Alberts was a 2024-2025 Ocean Reporting Network fellow.
- A key finding was that eight Chinese ships involved in deep-sea mining research only spent about 6% of their sea time over the last five years in internationally designated seabed mining areas, while spending the rest of the time elsewhere, including areas identified by Western experts as strategically important for military reasons.
- The investigation illustrates that the nascent deep-sea mining industry not only poses potential environmental risks, but also presents geopolitical implications.
- This article explains how Alberts and Fox worked together to undertake this investigation, which has drawn international attention and was cited or republished by outlets including The New York Times, Inkstick Media and Island Business.

Hidden ‘bubble cave’ may help world’s rarest seal steer clear of humans: Study
On the Greek islet of Formicula, researchers have found rare Mediterranean monk seals will take refuge in an air-filled “bubble cave,” according to a recent study. This type of hidden chamber, accessible via underwater passages, allows the seals to breathe, and possibly hide from tourists, the researchers said. Mediterranean monk seals (Monachus monachus), the world’s […]
As economic case for deep-sea mining weakens, industry should halt urgency to begin operation (commentary)
- Deep-sea mining in international waters is a unique proposition, given that the seabed is considered a global commons, so any extraction should be justified for the benefit of all humankind.
- But given the likely environmental and social costs and the increasingly weak economic arguments for it, its proponents must address why there is a supposed urgency to begin commercial production.
- “The financial case for deep-sea mining is being dismantled one argument at a time. As a small number of actors attempt to rush toward seabed mining, it is only a matter of time until more financial institutions join the momentum against [it],” a new op-ed argues.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Risk of saltwater intrusion into coastal groundwater spans the globe: Study
- Coastal sites throughout the world are seeing notable declines in groundwater levels, putting them at risk of saltwater intrusion, according to a new study.
- About half of drinking water and a quarter of irrigation water comes from groundwater, so this trend threatens a vital source of freshwater for humanity.
- The study authors found that more than 10% of monitored locations showed a significant years-long decline in groundwater levels, indicating a susceptibility to saltwater intrusion, which can render water unusable.
- Many large-scale studies on groundwater and saltwater intrusion are model-based, but this one analyzed data from wells across much of the world.

New species of ghost pipefish named after Sesame Street character found in Australia
It’s “hairy,” bright orange or red and “exceptional” at camouflaging. Meet the hairy ghost pipefish, whose recent formal description demonstrates that even well-studied marine environments like the Great Barrier Reef still hold remarkable secrets for science. In a recent study, researchers shared the name of the ghost pipefish, Solenostomus snuffleupagus, for its “conspicuously shaggy appearance,” […]
US prepares to auction leases for seabed mining blocks in federal waters
- The U.S. government is preparing to conduct lease sales to auction off blocks of the seabed for deep-sea mining in federal waters of American Samoa, the Commonwealth of the Northern Mariana Islands, and Alaska.
- If the lease sales proceed, they would mark a major step toward commercial-scale deep-sea mining, making the U.S. one of the first players in the industry.
- While many oppose these plans to start mining the deep sea and say the government’s timeline is rushed, others are more supportive.
- A spokesperson for the U.S. agency managing the sales, the Bureau of Ocean Energy Management, told Mongabay it is pursuing this process in a responsible manner.

Iceland must protect wild salmon and reject new aquaculture legislation (commentary)
- Aquaculture and other factors like climate change pose a potentially mortal threat to wild Atlantic salmon, so a new bill in the Icelandic parliament should be rejected, Patagonia founder Yvon Chouinard argues in a new op-ed.
- More than 65% of Icelanders polled agree with him in opposing open-net salmon farming, which the bill would allow to expand despite the fact that it employs a small fraction of those working in the tourism sector, and which relies heavily on the nation’s natural beauty and healthy wildlife populations.
- “Icelandic ministers can listen to reason and citizens and set an example of responsibility, rather than giving in to the worldwide aquaculture industry,” Chouinard writes.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

The most underfunded climate opportunities may be at sea
- At the Philanthropy Asia Summit’s “Sea Change” panel on ocean-climate solutions in Asia, speakers highlighted a mismatch between the ocean’s importance to the climate transition and the tiny share of philanthropic funding directed to ocean-climate work.
- Ocean philanthropy has long focused on conservation, fisheries, and coastal livelihoods, but climate change is now threatening many of those gains while also making the ocean central to mitigation through offshore wind, cleaner shipping, blue carbon, and coastal resilience.
- Philanthropy cannot finance offshore wind farms or the decarbonization of global shipping, but it can play a catalytic role by funding policy design, marine spatial planning, community engagement, technical research, coordination, and local capacity.
- Some of the strongest opportunities for funders lie in Asia, where offshore wind, ports, shipbuilding, shipping routes, and coastal communities converge, and where early philanthropic support can help make large-scale transitions faster, more inclusive, and more credible.

West Asia conflict brings Norwegian marine research vessel back to Sri Lanka
- The West Asia conflict unexpectedly redirected Norway’s state-of-the-arts Fridtjof Nansen research vessel to Sri Lanka after a planned survey in Oman was disrupted.
- The month-long expedition surveyed Sri Lanka’s marine ecosystems, fish stocks biodiversity and ocean conditions using advanced acoustic and oceanographic methods.
- Scientists documented around 800 species, including about 125 that may be new records from Sri Lankan waters, along with a few species that could be new to science, pending further detailed analysis of the collected specimens.
- The survey revived a previously cancelled mission due to approval delays and offered Sri Lankan researchers some rare hands-on training aboard the United Nations-flagged research vessel.

World Turtle Day: Important conservation wins amid turtle extinction crisis
World Turtle Day is celebrated every May 23 to raise awareness about the threats faced by turtles and tortoises. Turtles, tortoises and terrapins, which together make up the order Testudines, have evolved over millions of years, dating back to the Triassic period. However, recent reports show that more than half of the world’s 359 turtle […]
AI listens for endangered orcas to help reduce underwater noise exposure
Artificial intelligence is listening to orca calls in real time and helping to reduce their exposure to underwater noise. The effort is focused on an endangered orca subspecies in the Salish Sea, off the coasts of the northwestern U.S. and western Canada, reports Mongabay writer Abhishyant Kidangoor. The southern resident orcas (Orcinus orca ater), made […]
More than 1,000 uncharted coral reefs mapped in vast, understudied northern Australia
Scientists have layered hundreds of satellite images to reveal more than 1,000 previously uncharted coral reefs in the turbid waters of northern Australia. The number is comparable to the Great Barrier Reef, though many reefs are smaller in size, researchers say. The reefs of northern Australia, while probably known to locals, had previously largely remained […]
New conservation effort launched to protect coral reefs in Yap
Conservation groups have launched a new initiative to safeguard coral reefs in Yap, a state in the Federated States of Micronesia, through both scientific innovation and traditional stewardship. The Yap Resilience Hub, a partnership between The Nature Conservancy (TNC) and the Great Barrier Reef Foundation (GBRF), is a three-year project that seeks to support local […]
Thai island community rallies to protect beloved dugongs, revive declining seagrass
- Seagrass beds around the island of Koh Libong in Thailand’s Andaman Sea have died off in recent years, part of wider nationwide declines scientists say have multiple, complex causes.
- The seagrass shortage has devastated the island’s once famed dugong population, jeopardizing tourism businesses and impacting the island community who have long protected them.
- Locals frustrated by slow government seagrass recovery plans are working with researchers and conservation groups to build citizen science skills and trial seagrass restoration techniques.
- Signs of hope are emerging, with recent surveys recording more dugongs in local waters, prompting local leaders to call for increased public awareness and enforcement of protections.

Ghost shark, carnivorous sponge among 1,000+ newly discovered marine species
The third year of a global Ocean Census has revealed 1,121 potentially new-to-science marine species, including a worm that lives inside a “glass castle,” a ghost shark, and a carnivorous sponge. The Ocean Census, launched in April 2023, aims to discover and describe marine life “at speed and at scale” before it is lost. The […]
A fever of mobula rays off Mexico’s coast: Photo of the week
During the mobula ray’s migration season, which runs from late April to July, the marine animals form massive aggregations called fevers. The image above was captured by Mongabay founder and CEO Rhett A. Butler in Baja California, a northwestern state of Mexico. The region is home to at least five species of mobula rays. Mobula […]
Seabed life triples after bottom trawling ban in Scotland protected area
Nearly a decade since Scotland established the South Arran Marine Protected Area and banned bottom trawling across much of it, life on the seafloor has thrived, a new study has found. Scientists surveying the area found three times more seabed organisms and twice as many species compared to nearby unprotected waters. “What looks like […]
At world’s largest shark conference, scientists warn of a grim outlook across the board
- Hundreds of researchers and conservationists met in Colombo from May 4-8 for Sharks International, held once every four years.
- Major topics at the conference included the trade in shark and ray meat, reducing shark bycatch, and the use of new technologies in conservation.
- Participants also highlighted innovative programs that encourage community-based conservation, and grappled with the contentious topic of closing fisheries to aid recovery of threatened species.

China and Norway push to increase krill harvests around Antarctica
- In Antarctic waters, an international fishery targets krill, shrimp-like crustaceans that form massive schools and support the continent’s iconic wildlife. Krill meal and oil is used primarily in the production of aquaculture feed, followed by pet food and human dietary supplements.
- China and Norway are working to expand the Southern Ocean krill fishery, promoting a new management system for the fishery that would increase harvests while also establishing a long-sought marine protected area.
- The two countries are also continuing to support their krill fleets politically and financially, while adding vessels to increase harvest capacity.
- Meanwhile, several NGOs have recently stepped up their campaigns against krill fishing, arguing that the krill fleet competes for food with Antarctic wildlife species already struggling with climate change and reduced food availability such as emperor penguins and Antarctic fur seals that have both recently been declared endangered.

The Southern Ocean is key to our planet’s future & we have a chance to protect it this year (commentary)
- The wildlife-rich Southern Ocean is not simply another stretch of water in need of protection: just one part of it — the Antarctic Peninsula — is home to roughly a third of the global krill population, which sustains large populations of whales, penguins, seals, seabirds, fish and more.
- The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is responsible for governing these waters, and the U.K. is set to chair its pivotal 45th annual meeting this year.
- This is an opportunity to act on Southern Ocean conservation, a new op-ed by former U.K. environment minister Zac Goldsmith argues, but that’s not all: “It would also send a powerful signal, at a time when multilateralism is under strain, that countries can still come together around shared values and act for the global good,” he writes.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Sawfish in Sri Lanka may be ‘functionally extinct,’ but refuges remain
The sawfish, recognizable by its distinctive saw-shaped snout or rostrum, is now thought to be “functionally extinct” in Sri Lankan waters. This, researchers say, means that while a few individuals may still exist, their numbers are likely too low to maintain a viable breeding population, reports contributor Malaka Rodrigo for Mongabay. In a 2021 study, […]
Sharks and rays do not know boundaries and a new high seas treaty seeks to protect them
- A recent panel discussion at a global conference on sharks and rays explored how the newly adopted Biodiversity Beyond National Jurisdiction (BBNJ) Agreement, or the High Seas Treaty, could transform conservation of migratory sharks known to travel across national borders into international waters.
- Speakers highlighted sharks’ vulnerability once they leave protected national waters, emphasizing how effective conservation requires international cooperation to avoid threats from industrial fishing, bycatch, and habitat degradation across geographical boundaries.
- The treaty creates a legal framework for establishing marine protected areas in the high seas, with scientists noting that Important Shark and Ray Areas (ISRAs) could help identify critical migratory routes and habitats for future protection.
- Panelists said the agreement on BBNJ marks a historic shift in ocean governance, but warned that enforcement, political cooperation and coordination with treaties such as CITES, the Convention on Migratory Species and the Convention on Biological Diversity will be essential for meaningful shark conservation.

Arabian Gulf’s fragile marine ecosystem threatened by current crisis (commentary)
- During the Iran–Iraq war of the 1980s and subsequent conflicts, large-scale oil spills and fires caused lasting environmental damage in the Arabian Gulf.
- A new commentary by United Arab Emirates special envoy of the minister of foreign affairs for nature Razan Khalifa Al Mubarak explains that recovery of impacted marine ecosystems, where it occurred, took decades, but that this progress is now threatened by the new conflict along the gulf.
- “What is at stake today is not only the repetition of past damage, but its amplification across interconnected systems,” she writes in arguing for an end to the current conflict.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Ocean philanthropy: small sums for a vast domain
- Ocean philanthropy remains small relative to the scale of the ocean itself, accounting for well under 1% of global charitable giving despite steady growth over the past decade.
- Funding is concentrated among a small group of foundations and continues to focus heavily on marine science, habitat protection, and fisheries, though climate-related ocean funding has risen sharply in recent years.
- Most ocean conservation funding needs lie not in creating protected areas, but in the long-term costs of management and enforcement, with current spending far below estimated requirements.
- Philanthropic funding often plays a catalytic role by supporting early-stage research, policy work, and financing mechanisms such as blue bonds and debt-for-nature swaps that can unlock larger pools of public and private capital.

The world’s great deltas are sinking — and with them, a global food system
- The Mekong Delta is sinking. Projections indicate that 90% of this life-sustaining landform could disappear by 2100 due to human-driven factors such as groundwater pumping and sediment capture by dams, compounding the effects of sea-level rise.
- The Mekong is just one of 40 of the world’s large river deltas threatened by high subsidence rates coupled with rising sea levels, according to a 2026 global study. Among the 19 river deltas seeing the most significant widespread subsidence are those on the Mekong, Nile, Chao Phraya, Ganga-Brahmaputra, and Mississippi rivers.
- As the world’s great deltas sink, humanity loses rich, irreplaceable agricultural lands, fisheries, urban areas and exceptional biodiversity — much of which will not be salvageable beyond a certain point. Delta loss poses a significant threat to global food security, and an existential threat to often impoverished delta communities.
- Delta subsidence can be slowed and even reversed by implementing well-understood mitigation strategies, say experts, by replacing hydropower dams with alternative energy, reducing sand mining and groundwater extraction, and altering agricultural practices. But these solutions are hampered by economics and lack of political will.

In Senegal, artisanal fishing kills a surprising number of sharks and rays: study
- A study at two fish landing sites in southern Senegal found artisanal fisheries catch large numbers of sharks, rays and guitarfish, most of them threatened species.
- The authors suggest artisanal fishing may have a greater impact on these species than industrial trawling due to its large scale and limited monitoring and enforcement.
- Much of Senegal’s trade in artisanally caught sharks and rays is poorly monitored and exports take place without required permits, raising concerns about ongoing species population declines in the region, experts say.

A 10-year whale shark satellite study helps create new protected area in Indonesia
- Fishers and scientists joined together in Indonesia for a 10-year study to protect whale sharks (Rhincodon typus).
- The bagan fishers’ unique relationship with the endangered whale sharks enabled scientists to satellite tag the fish.
- The data from the decade-long study revealed previously unknown migration routes, feeding grounds and a whale shark nursery.
- The data will be used to help create a marine protected area designed for whale sharks.

Iceland plans to resume whale hunting this summer
Icelandic commercial whaling company Hvalur hf. plans to resume whale hunting this summer, following a two-year pause in commercial operations. In 2024, the Icelandic government issued the company a five-year license allowing it to catch up to 209 fin whales (Balaenoptera physalus) annually. However, Hvalur hf. didn’t hunt any whales in 2024 or 2025. Iceland’s […]
With its first marine reserve, Ghana protects its ocean to secure its future (commentary)
- Last month, Ghana made news when it declared its first marine reserve and sited it in one of the nation’s most ecologically and biologically significant marine environments.
- Ghana’s minister for fisheries and aquaculture explains in a new commentary that the Greater Cape Three Points reserve will help restore marine ecosystems and protect the livelihoods of 21 coastal communities, while advancing the nation’s 30×30 conservation goal ahead of next month’s Our Ocean Conference in Kenya.
- “We urge governments everywhere to follow in Ghana’s footsteps to protect more of our ocean, invest in effective management, and ensure communities are at the heart of these efforts,” the minister writes.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

Tierney Thys, marine biologist and interpreter of the sunfish
- Tierney Thys spent decades studying the giant ocean sunfish, using its improbable form to ask broader questions about life in the open ocean.
- Trained as a marine biologist, she moved between research, filmmaking, and public storytelling, helping make complex ecological processes accessible to wider audiences.
- In later years, her work extended beyond the sea, linking issues such as textiles and microplastics back to ocean health.
- Across her career, she returned to a central concern: how people come to value the natural world, and what sustains that commitment over time.

World’s largest shark conference is set to begin in Sri Lanka next week
- When Colombo hosts Sharks International 2026 from May 4-8, it will be the first time a global shark and ray science conference is convened in Asia, drawing global attention to the region’s fisheries and biodiversity challenges.
- The conference will bring together leading global experts, policymakers and fisheries managers to strengthen the links between science, policy and practice, particularly in regions where shark fisheries are both economically important and ecologically under pressure.
- Key discussions will revolve around methods to bridge persistent gaps between shark conservation policy and on-the-water reality, and how regulations exist in formal frameworks but fail to translate into consistent awareness and action, compliance and enforcement.
- More than one-third of shark and ray species are now threatened with extinction globally, driven by overfishing, bycatch and international demand, making improved fisheries governance and enforcement a central focus of the 2026 meeting.

Global trade in sea cucumbers ‘alarming’ with many species at risk: Study
- The global trade in sea cucumbers has grown since 2013 and continues to decimate the populations of many species, according to a recent study that cites “escalating impacts” and calls for stronger conservation measures.
- The study found that global capture of sea cucumbers increased from 2013 to the late 2010s and dipped slightly during the peak pandemic years of 2020 and 2021, the last years in the study period.
- China and it’s special administrative region of Hong Kong, where sea cucumbers are used in traditional medicine and consumed as a delicacy on special occasions, are the main importers as measured by dollar value, the study found.

Marine resource conflicts in Africa revolve mostly around access: Study
- A new study identified more than 1,000 conflicts in Africa over an 11-year period and found that nearly 75% were disputes over access to spaces and resources.
- The study calls for more participatory and transparent governance to reduce conflicts, warning that without such reforms, conflicts could derail African policymakers’ sustainability and equity goals.
- The analysis, based on media reports and academic articles, found that the underlying drivers of the conflicts, some more direct than others, included illegal fishing, changes in distribution of benefits, weak governance and resource degradation caused by human activity.

Nearly three in four marine protected areas undermined by wastewater pollution
- A global modeling study found that 73% of marine protected areas are exposed to nitrogen pollution from wastewater — often at higher levels than in nearby unprotected waters.
- The findings indicate that marine conservation planning often fails to adequately account for land-based wastewater pollution or to integrate land-sea management.
- Wastewater pollution, largely untreated globally, introduces nitrogen and phosphorous nutrients and other contaminants that degrade marine ecosystems, with impacts on coral reefs, seagrass and water quality, and can undermine the effectiveness of MPAs.
- Addressing the issue is considered feasible but constrained by fragmented governance, underfunding and limited monitoring, despite solutions that include existing technologies, various policy proposals and examples of improved wastewater management.

One of the world’s largest deep-sea coral reefs discovered off Argentina
- Scientists have discovered what may be one of the world’s largest cold-water coral reef systems, located about 1,000 meters (3,300 feet) deep in Argentina’s territorial waters, with much of it remaining unmapped.
- The reef, dominated by the rare coral species Bathelia candida, hosts a surprisingly rich ecosystem, including dozens of deep-sea species new to science.
- Researchers found signs of human impact, including fishing debris and possible trawling damage, and worry the reef area might also be targeted for oil and gas exploration.
- The researchers are testing restoration techniques, including the installation of 3D-printed “artificial corals,” which they hope will encourage the rapid growth of new corals.

Offshore wind’s clean energy potential remains largely untapped, say experts
- Offshore wind has enormous clean energy potential across the globe. Though the sector has expanded in recent years that potential remains largely untapped.
- Today, China and European nations lead the way in developing offshore wind farms, with the U.S. hampered by the Trump administration, and other nations just beginning to tap into the potential of marine wind.
- Currently, about 80 gigawatts of power is generated by existing marine wind farms. According to some estimates, more than 2,000 GW of offshore wind is needed to meet climate goals, requiring a huge expansion including in deeper waters using floating platforms.

NPFC adopts illegal fishing measures — but no Emperor Seamount protections
- The 10th annual meeting of the North Pacific Fisheries Commission (NFPC) took place April 14-17 in Osaka, Japan.
- While the NPFC members enacted new measures to combat illegal, unreported and unregulated fishing, leading NGOs criticized the commission for failing to act on bottom trawling in the Emperor Seamount Chain, a biodiversity-rich volcanic submarine mountain range in the Northwest Pacific.
- Some NPFC members and observers also expressed disappointment about backtracking on stock management and conservation for the Pacific saury, which is targeted by fishing fleets of several member countries.

Photos: A shark meat processing village and market in Indonesia’s Lombok
Shark meat has quietly surpassed shark fins in international trade volume and value. In East Lombok it sells for as little as 29 cents a skewer. Photojournalist Garry Lotulung documented the shark trade at Lombok’s Tanjung Luar fish market and nearby Rumbuk village, an important shark meat processing center. EAST LOMBOK, Indonesia — Indonesia consistently […]
Singapore to halt sourcing and breeding dolphins
Singapore’s Resorts World Sentosa will stop sourcing wild dolphins for its aquarium and is suspending its captive-breeding program, according to insiders, reports Mongabay contributor Robin Hicks. Anbarasi Boopal, former co-chief executive of Singapore animal welfare charity Animal Concerns Research and Education Society (ACRES), said this was a positive step. However, she called for transparency about […]
Chile’s plan to protect another 10% of its ocean is stalled by the new government
The expansion of two vast Pacific marine parks near Chile has been suspended for six weeks, leaving protections for around 337,000 square kilometers (130,000 square miles) of ocean in limbo. Former President Gabriel Boric signed a decree creating marine parks Juan Fernández II and Nazca-Desventuradas II on March 10, his last day in office. Together […]
Study finds bottom trawling nets 3,000 marine fish species, including threatened ones
How many marine fish species do bottom trawls catch? Researchers now have a list, and it’s long, running to some 3,000 species, according to a recent study. Bottom trawling is a commercially popular, and controversial, fishing method in which boats drag weighted nets along the seafloor. Usually they target commercially valuable marine life at the […]
AI tool listens for endangered orcas in real time to reduce human disturbance
- An AI initiative is listening to southern resident orcas in real-time to help them steer clear of vessels and noisy coastal construction.
- OrcaHello builds on a network of underwater microphones to detect orcas and push out alerts that have helped pause coastal construction and redirect boat traffic as the orcas pass by.
- Southern resident orcas are considered an endangered subspecies, with only 76 remaining individuals.
- Major threats to the species include a decline in their food sources, primarily Chinook salmon, along with noise pollution and vessel traffic.

Drones aid dugong conservation as threats mount across their range
- Drone technology is revealing new information about the elusive dugong, a marine herbivore classified as globally vulnerable but already extinct in parts of its range.
- Scientists are using drones to improve estimates of dugong numbers and conduct noninvasive health checks.
- Dugongs feed exclusively on seagrass meadows, where their foraging helps to maintain these important carbon sinks.
- Researchers are highlighting the need to link efforts to conserve seagrass meadows with protecting dugongs.

San Francisco Bay emerges as high-risk area for migrating gray whales
Gray whales have one of the longest known migrations of any mammal — from the Arctic near Alaska, to the lagoons of Baja Mexico, where they mate and give birth. This annual migration, longer than 19,000 kilometers (12,000 miles), has been altered by climate change, with profound consequences for the 15-meter (50-foot) mammals. Since 2016, […]
Aaron Longton, fisherman who tied sustainability to survival
- Aaron Longton was a commercial fisherman in Port Orford, Oregon, who built his career through persistence and a deep understanding of the marine environment.
- He helped pioneer a model that connected fishermen directly with consumers, improving prices while increasing transparency around how seafood is caught.
- Longton argued that conservation and economic survival were inseparable, supporting science-based management and habitat protection to sustain fisheries over time.
- His work reflected the challenges facing small-boat fishing communities and offered a practical approach to maintaining both livelihoods and fish stocks.

Invasive ferrets removed from an island in a world-first
Rathlin Island off the north of Northern Ireland is now free from feral ferrets that were harming its native seabirds. Conservationists say this is the first time these nonnative animals, which were domesticated from polecats some 2,000 years ago, have been completely eradicated from any island. Ferrets (Mustela furo) were introduced to Rathlin in the […]
Deep-sea wildernesses are more important than the promise of seafloor mining (analysis)
- A scientist who was part of a major 2008 expedition exploring the promise of deep-sea mining writes in a new analysis that what they found offshore of Papua New Guinea ended his enthusiasm for the nascent industry.
- The biodiversity documented by their remotely operated vehicle — added to the fragility and uniqueness of the geology and ecology they documented — was clearly too special to perhaps permanently decimate for electric vehicles and renewable energy.
- “I entered this project in good faith, working with the mining company to help determine whether or not deep-sea mining at Solwara I could be conducted with minimal harm to the marine environment. I exited convinced that there is no viable path forward for hydrothermal vent mining, anywhere in the ocean.”
- This article is an analysis. The views expressed are those of the author, not necessarily of Mongabay.

Half of seabirds are declining. Protecting marine flyways could help save them
- Nearly half of migratory seabird species are in decline, in part because conservation systems stop at borders while the birds do not.
- A new study maps six “marine flyways” spanning the world’s oceans, showing how 151 species depend on connected routes across dozens of countries.
- These pathways link breeding sites, feeding areas, and migration corridors, but face persistent threats from bycatch, invasive species, and climate change.
- Coordinating protection along these routes—rather than focusing only on isolated sites—could improve conservation outcomes for seabirds at a global scale.

Creating the North Atlantic’s largest MPA network: Interview with Azores President José Manuel Bolieiro
- In May, José Manuel Bolieiro, president of the Portuguese-administered Azores region, will be honored at the international Peter Benchley Ocean Awards, known as the “Oscars for the Ocean.”
- Bolieiro played a key role in the recent expansion of the archipelago’s existing ocean protections with the establishment of the Azores Marine Protected Areas Network, now the largest MPA network in the North Atlantic.
- He spoke to Mongabay about the importance of ensuring adequate funding and enforcement for the new MPA network, his hope that Portugal can be a global reference for ocean conservation, and how growing up in the Azores fostered his deep love of the sea.

In Indonesia, a coastal vine used as medicine now signals ecological decline
- The beach morning glory (Ipomoea pes-caprae) vine is widely used as a traditional medicine in the north of Indonesia’s Sulawesi Island, and in many tropical coastal communities, to treat common complaints, and by fishers to treat stings from venomous fish.
- In addition to its medicinal use, the plant, also known as bayhops, reinforces beaches by binding sand dunes, increasing the resilience of global coastlines to risks of abrasion and erosion.
- Beach morning glory is a ubiquitous crawling vine, but some communities in Sulawesi’s Gorontalo province say the medicinal plant has disappeared locally due to industrial development and infrastructure construction.

24 new species found in ocean zone eyed for battery metals mining
- Scientists discovered 24 new species of tiny crustaceans and an entirely new evolutionary branch from a deep abyss in the central Pacific, some 4,000 meters below the surface.
- The the Clarion-Clipperton Zone (CCZ) is studded with chunks of fused nickel, cobalt, copper and other minerals, making it one of the most commercially coveted tracts of ocean on Earth.
- An estimated 90% of species in the Clarion-Clipperton Zone remain unnamed even as the U.S. moves to streamline the permitting process to mine the seabed for critical minerals.
- A 2025 study found that a commercial mining test in the zone reduced animal abundance by 37% within the machine’s tracks, highlighting the ecological cost of extraction in a region science is only beginning to understand.

Migratory species summit adopts new marine protections amid extinction warnings
- Delegates to the latest meeting of the Convention on Migratory Species of Wild Animals adopted new protections for 40 migratory species, including 33 marine animals like sharks, seabirds and shorebirds.
- The convention’s 15th Conference of the Parties (COP15), held in Brazil March 23-29, recognized the importance of “marine flyways” for migratory birds and highlighted key marine biodiversity areas.
- It also urged protection of seamounts from destructive fishing practices and a precautionary approach on deep-sea mining to address potential impacts on migratory species.
- Conservation advocates lauded the steps taken at COP15, but the summit also issued stark warnings that extinction and species decline are accelerating.

At high seas treaty summit, a dispute over fisheries managers’ role in conservation
- The high seas treaty was agreed to by the world’s nations in 2023 and took effect in January. The treaty created a means to establish marine protected areas (MPAs) in international waters, or the high seas.
- A summit to draft the treaty rules took place March 23-April 2 at the United Nations headquarters in New York City. Five multilateral organizations that manage high seas fishing, known as regional fisheries management organizations (RFMOs), jointly proposed changes in a bid to ensure their own work is not duplicated or displaced.
- The draft rules that emerged from the summit, to be voted on at a future meeting, accommodated the RFMOs’ wishes, according to critical observers, who argue the RFMOs are influenced by fishing industry priorities and may use authority conferred by the rules to inhibit MPA creation.
- In other news at the summit, parties also worked on developing rules governing the participation of non-state observers such as NGOs and a process for determining the location of the treaty’s secretariat.

A French city cut its marine pollution — and its seagrass bounced back
- Neptune grass is generally regarded as the most ecologically important seagrass and shallow-water habitat in the Mediterranean Sea, where it is endemic. But the species has been in decline for many decades.
- A new study found that following the introduction of stronger environmental regulations and practices in the mid-to-late 1980s, Neptune grass (Posidonia oceanica) repopulated sampled sections of the waters off Marseille, France, over the ensuing four decades at rates that experts called “exceptional” and “remarkable.”
- The lead author said the study shows the value of passive restoration: letting seagrass meadows regrow on their own after removing the human-caused drivers of decline, rather than focusing on replanting or transplanting the species.

Microplastics found in fish in Tuvalu, a remote South Pacific nation
Tuvalu is a remote Polynesian nation made up of three reef islands and six atolls. Home to fewer than 11,000 people, Tuvalu is 1,100 kilometers (680 miles) from its nearest neighbor in Fiji. Yet dispite its isolation and small population, new research shows that the ocean ecosystems around Tuvalu are polluted with microplastics. A team of researchers […]
Latin America’s largest hospital complex cancels plan to buy shark meat
- Last month saw a series of new policy developments for sharks in Brazil.
- Brazil’s biggest hospital complex said it would strike shark meat from a planned 2026 procurement, though the boneless fish could still be served at some of its institutes.
- The environment agency issued a host of new rules, including a ban on shark fins detached from the carcass, drawing ire from industry groups.
- A court ruled that federal procurements of shark meat for public institutions must meet new species labeling and traceability requirements.

Is the Galápagos damselfish extinct?
- A once-common reef fish in the Galápagos has not been seen since 1983, raising the question of whether it has already disappeared.
- A recent study by Jack Stein Grove and colleagues concludes the species is likely extinct, based on decades of failed searches and historical records.
- Its disappearance is linked to the severe 1982–83 El Niño, which disrupted the islands’ nutrient cycles and food webs.
- The case highlights how even well-known marine ecosystems can lose species quietly, with declines only becoming clear in hindsight.

10% of the ocean is protected. Now just 20% more to go
- Data from the World Database on Protected and Conserved Areas (WDPCA) indicate that more than 10% of the ocean is now protected, marking a significant milestone for ocean conservation efforts.
- With a global goal to protect 30% of the ocean by 2030, experts warn that efforts must accelerate dramatically: An area roughly the size of the Indian Ocean must be protected within the next four years to meet the goal.
- While overall coverage is important, protection levels vary widely. For instance, only about 3.3% of the ocean is currently classified as fully or highly protected — and that number may even decrease.
- Experts have also raised concerns about the quality and effectiveness of many areas designated as “conserved,” which are now counted alongside traditional marine protected areas.

American Samoa said ‘no’ to deep sea mining, Washington heard ‘faster’ (commentary)
- The U.S. government is moving fast to grant leases to corporations for deep sea mining in places like the territory of American Samoa: once issued, these are very difficult to rescind.
- Leaders there have weighed in against this lease on cultural and environmental grounds, but the federal agency in charge has merely acknowledged this dissent while continuing to move forward.
- “American Samoa is not a test case; it’s at risk of becoming the federal government’s blueprint” on deep-sea mining licensing, a new op-ed states.
- This article is a commentary. The views expressed are those of the author, not necessarily of Mongabay.

State fishing village plan in Indonesian Papua sparks Indigenous opposition
- Indigenous Wiyagar leaders in Indonesian Papua oppose a planned state-backed fishing village, saying it’s being pushed without proper consultation on their customary land.
- The project is part of a nationwide program to build thousands of “modern” fishing settlements, a key plank of President Prabowo Subianto’s maritime development agenda.
- Critics warn the initiative risks “blue injustice,” as top-down planning may sideline local livelihoods, cultural systems and legal rights to participation.
- The dispute underscores broader tensions in Indonesian Papua over Indigenous land rights, with concerns that fast-tracked national projects could deepen land conflicts and environmental impacts.

Singapore resort said to halt controversial dolphin sourcing, breeding
- Singapore’s Resorts World Sentosa is to end sourcing dolphins from the wild and has suspended a captive breeding program, according to sources.
- The company is assembling a team of experts to decide the future of more than 20 Indo-Pacific bottlenose dolphins, most of which were captured from the Solomon Islands in 2008 and 2009.
- The resort has maintained the dolphins are well cared for and the exhibit at Singapore’s Oceanarium serves educational and conservation purposes.
- Experts say that rehabilitation and release of the dolphins is possible, with transfer to a natural sea pen the first step for assessment.

Marine flyways are the missing map we can use to boost seabird conservation (commentary)
- At the 15th Conference of the Parties to the Convention on Migratory Species last week in Brazil, delegates formally established something scientists have long understood but never before mapped at a global scale: marine flyways used by seabirds.
- Seabirds are more than charismatic travelers along these routes, rather, they are indicators of ocean health and can guide conservationists to the most important areas for marine biodiversity.
- “Seabirds have been tracing these routes for millennia. They have shown us the map. Now it is our turn to follow it with urgency, ambition and a shared commitment to safeguarding the ocean that sustains us all,” a new op-ed argues.
- This article is a commentary. The views expressed are those of the authors, not necessarily of Mongabay.

Traditional protection proves more successful for clams in American Samoa
- A study found that on the most populated island in American Samoa, traditional village-based protections and remote sites had the highest density of giant clams — outperforming federally designated no-take zones in one case.
- The authors suggest that traditional community stewardship could offer a viable alternative to federal restrictions, especially in areas communities rely on for giant clam harvesting, while respecting traditional management practices.
- The giant clams, which are slow-growing, face threats from habitat degradation, ocean warming, watershed pollution and overharvesting.
- The NOAA National Fisheries Service proposed protections for several giant clam species in 2024 which could lead to a top-down ban on harvesting. Some sources say a blanket ban without including communities in conservation strategies would impact people who rely on harvesting.

Investigation of permit violations in South Africa’s shark fishery pending
- In June 2025, South African authorities fined a shark fishing vessel caught violating its permit conditions.
- It is not the first time the country’s small shark fishery has made headlines, including for breaches of conditions by fishing in protected areas and illegally cutting heads and fins off of its catch, preventing effective monitoring.
- In October, the fisheries department said it would consider further action; no updates have been made public, but satellite data suggest the Zanette has fished inside a marine protected areas on at least four occasions since then.

New strategy to reverse Kenya’s shark decline tries to bring fishers on board
- A new strategy by government agencies, scientists and coastal community members proposes a working plan of 19 goals to reverse the steep decline of sharks and rays in Kenya.
- As small-scale fishers have a lot of influence on the marine species’ populations, most of the goals directly involve fishers or try to get them on board to make the conservation strategy a success.
- Goals include alternative fishing gear, different livelihoods to reduce fishing pressure, increasing the number of locally managed marine areas, involvement of fishers in conservation decision-making and more effective enforcement.
- Community fishing representatives say they are on board with the plan but highlight that a few points, like concrete and viable alternative livelihoods and fishing methods, need to be offered to reach the conservation goals.

Small ray of hope for Sri Lanka’s sawfish, now feared ‘functionally extinct’
- Known for its saw-shaped snout or rostrum, the sawfish is now feared “functionally extinct” in Sri Lankan waters, with the last record dating back to 2017.
- Three critically endangered sawfish have historically been reported in Sri Lanka — the narrow sawfish (Anoxypristis cuspidata), largetooth sawfish (Pristis pristis), and green sawfish (P. zijsron) — but they are listed as either endangered or critically endangered due to overfishing, habitat loss and bycatch.
- Researchers say small populations may still be surviving and call for more surveys to identify potential habitats toward conservation.
- The sawfish’s rostrum serves as both a weapon and a sensory organ, helping it to hunt prey in murky waters, and in Sri Lanka, these are traditionally offered to churches as a sign of goodwill.

China’s deep-sea mining fleet may also track US submarines
A Mongabay and CNN investigation found the eight Chinese state-owned ships that conduct deep-sea mining research in China’s mining areas allocated by the International Seabed Authority (ISA) actually spent little time in these exploration areas, while spending much of their remaining time operating in militarily strategic waters. Many of these vessels are linked to the […]
The ocean’s enforcement gap
- Governments have designated vast marine protected areas and pledged to conserve 30% of the ocean by 2030, enforcement often lags behind these commitments.
- Research shows that the ecological benefits of marine protected areas depend less on their size than on whether rules are visible, monitored, and enforced.
- New tools—such as satellite imagery, vessel-tracking systems, and data analytics—are making it easier and cheaper to detect illegal fishing and focus enforcement efforts.
- As monitoring improves, the future of ocean conservation may depend less on creating new protected areas than on ensuring existing rules are consistently applied.

World Water Day: Earth’s freshwater reveals new species & faces mounting threats
Water covers most of our planet, yet less than 3% of it is freshwater and most of it is contained in glaciers, making it not readily usable. Contamination and overuse threaten the valuable supplies of freshwater that humans and other animals, especially aquatic organisms, depend on to live. On World Water Day, a United Nations […]
PNG’s New Ireland coastal waters causing fish deaths, human sickness
- Communities on the east coast of Papua New Guinea’s New Ireland province report that contact with the seawater there has made people sick since December 2025; residents have also reported spikes in the number of dead fish and other marine life along the shoreline.
- A group of local and international NGOs has responded, providing help with sampling to determine the cause and raising money for the affected villages.
- New Ireland’s coastal communities depend on the sea for food, but government officials have warned against eating fish until the cause of the problems has been identified.
- Government ministries have been aware of the situation for at least two months, and while leaders say that tissue, water and soil samples have been collected, no results have been released yet.

Brazil protects huge coastal area with endangered dolphins and megafauna fossils
Brazil’s federal government created a huge conservation area on March 6 to protect a critical biodiversity hotspot in the Atlantic Ocean. The newly created Albardão marine park and coastal environmental protected area are home to at least 25 endangered species and Pleistocene epoch megafauna fossils. The new national park is off the coast of Brazil’s […]
Beyond the screen: DCEFF
Documentary films have the power to shape how we understand nature. They offer a deeper look into the planet’s challenges, bringing people together through shared experiences and inspiring action. As a media partner for the 2026 Environmental Film Festival in the Nation’s Capital (DCEFF), Mongabay is featuring exclusive insights into some of this year’s standout […]
The hidden cost of fisheries subsidies
- Governments provide roughly $35 billion a year in fisheries subsidies, much of it supporting fleets that can operate beyond what fish stocks alone would sustain.
- Research suggests many high-seas fisheries would be unprofitable without public support, raising questions about whether some “productive” fishing activity exists largely because of subsidies.
- Recent efforts such as the WTO fisheries subsidies agreement aim to curb support tied to illegal fishing and depleted stocks while improving transparency around how governments finance their fleets.
- Treating oceans as assets on the public balance sheet—from reforming subsidies to investing in monitoring and coastal ecosystems—could help governments reduce long-term fiscal risks while supporting healthier fisheries.

An ancient fishing tradition in Indonesia could help build a more sustainable fishery
In the remote coastal areas of eastern Indonesia, a centuries-old tradition is providing a contemporary blueprint for sustainable development. The practice, known as Sasi Laut, imposes temporary fishing closures of six to 12 months to allow sedentary marine species such as sea cucumbers and shellfish to replenish. A new study published in Marine Policy reveals […]
Mass pilot whale stranding in Indonesia raises questions about ocean health
Villagers in central Indonesia rescued 34 short-finned pilot whales following a mass stranding on March 9, but despite their overnight efforts were unable to save 21 others. Mongabay Indonesia’s Ebed De Rosary reports that residents first discovered the pod in the shallow waters off Deranitan village, in East Nusa Tenggara province, at approximately 3:30 p.m. […]
Oil patch appears after IRIS Dena sinking in Sri Lanka; origins still unverified
- Following the March 4 sinking of an Iranian warship in the Indian Ocean, fishers and coastal communities have spotted an oil patch along the Hikkaduwa coast in southern Sri Lanka, raising concerns about its origin.
- Authorities are conducting investigations to determine the origin of the oil patch and debris washed ashore.
- Studies show the sea around Sri Lanka as highly vulnerable to oil spills, as more than 25% of oil transported globally passes through Sri Lanka’s exclusive economic zone.
- Legal experts say in the event of confirmed environmental impact due to the ship sinking, the “polluter pays principle” should be applied.

Why saving seagrass meadows could help save the world’s coastlines
- Seagrass is known for its blue carbon potential, but meadows also play an important role in coastal protection by helping reduce wave intensity and stabilizing sediments, both of which are key to reducing coastal erosion.
- Experts point out that seagrass brings multiple other benefits, such as improving water quality that helps the marine environment, including coral reefs.
- Yet seagrass meadows across the globe face declines due to multiple stressors, including climate change.
- Conservationists and researchers are working to restore meadows and help them become resilient to increasing ocean temperatures and potentially devastating marine heat waves.

If Florida reefs aren’t protected, storms will increase flooding & costs: Study
- Coral reefs absorb incoming waves, protecting shorelines from tropical storms.
- A recent Earth’s Future study examines flood risks from tropical storms to communities in Florida, if coral reefs keep degrading at current rates.
- The study finds that future coral reef degradation will increase the annual risk of flooding to people by 42% and to buildings by 47%.
- This increased degradation would predictably cause $412.5 million in damages to structures and economic disruption of $438.1 million annually.

Marine biologist Edie Widder chases bioluminescence in new ‘Life Illuminated’ film
- The new documentary “A Life Illuminated” traces the career arc of U.S. marine biologist Edie Widder, an expert on bioluminescence who’s made headlines for decades.
- The film documents her team’s attempt to capture a remarkable deep-water phenomenon called “flashback” on camera. (Spoiler alert.)
- Bioluminescence serves a variety of functions for deep-sea creatures, and flashback may originate from bioluminescent bacteria on drifting organic matter, Widder said.
- “A Life Illuminated” will make its Washington, D.C., premiere on Mar. 19, the first night of the D.C. Environmental Film Festival, where Mongabay is a media partner.

Modest controls put on freewheeling squid fleet at South Pacific fisheries meeting
- The 14th meeting of the South Pacific Regional Fisheries Management Organisation (SPRFMO) took place in Panama City from March 2-6.
- The intergovernmental organization regulates fishing activities in the high seas of the South Pacific, a vast area encompassing about 59 million square kilometers.
- Key decisions concerned tightening regulation of the jumbo flying squid fishery following increased fishing activity and signals of overfishing, and adopting measures to reduce illegal fishing practices and labor abuses in the squid fleet.
- Decision-makers also took steps toward finalizing a new management procedure for jack mackerel. Negotiations over regulating bottom trawling, a source of disagreement at recent SPRFMO meetings, remained stalled.

Bangladesh sees rise in ray, shark fishing as traditional seafood species dwindle
- Bangladesh has seen a sudden rise in illegal shark and ray fishing and consumption in recent years.
- A decrease in catch of traditionally consumed fish species and the lower prices of sharks and stingrays have led to this rise in popularity. Additionally, traders export ray skins and shark parts to East and Southeast Asian countries.
- Sharks and rays are protected species in Bangladesh and existing laws prohibit their catching, selling and consumption.
- Conservationists blame the weak law enforcement and lack of awareness among fishers and suggest that the government initiate stricter conservation measures besides providing subsidies to the poor fishers.

Belugas facing euthanasia at shuttered Canada theme park may find new homes in US
- In August 2025, Canada’s only entertainment park with cetaceans, Marineland of Canada, closed for good, prompting concern about the fate of 30 beluga whales and four dolphins remaining at the facility.
- After a plan to transfer them to a theme park in China was blocked by the Canadian government, Marineland called for euthanizing the animals. The Canadian government has now conditionally approved their possible transfer to four U.S. institutions.
- Keeping highly intelligent and social creatures in concrete-lined tanks adversely affects their health and well-being, experts say.
- With changing public perceptions and a growing number of countries, including Canada, banning the keeping and breeding of whales and dolphins, conservationists are calling for alternatives to house the more than 3,700 cetaceans in captivity worldwide, including building seaside sanctuaries.

Plastic, from home and abroad, spills into Türkiye’s waters
- Türkiye has become a major destination for plastic waste recycling, notably from Europe and the U.K. Most of this scrap heads to the roughly 180 waste facilities handling plastic in Adana province.
- But large quantities are dumped along riverbanks or escape the facilities through their wastewater and eventually flow downstream into the Mediterranean Sea.
- The resulting pollution is taking a toll on riverine and marine ecosystems, including important sea turtle nesting sites.
- Some experts say Türkiye should stop importing plastic altogether to stem the tide of pollution, but the government has said the recycling industry plays an important economic role.

Pascale Moehrle pressed Europe to take its seas seriously
- Pascale Moehrle, who led Oceana’s European office from 2019 to 2025, spent more than four decades working on wildlife conservation and ocean policy.
- Her death was announced by Oceana on March 4, 2026.
- Moehrle pushed European governments to follow scientific advice on fisheries, curb destructive fishing practices and enforce protections in marine protected areas.
- Her work focused on turning Europe’s commitments on ocean protection into practical policy that could restore marine ecosystems and sustain fisheries.

Sri Lankan waters under ‘close watch’ following wreckage of Iranian warship
- At least 90 bodies were recovered from the wreckage of the IRIS Dena, an Iranian warship that was torpedoed by a U.S. submarine on March 4.
- The Sri Lanka Navy has spotted oil patches and life rafts during the rescue mission but no oil spill reported so far.
- Maritime experts say Sri Lanka will have an opportunity to raise a claim for environmental damage following the sinking of the frigate.
- If the Indian Ocean island intends to seek damages, the government may have to claim environmental damages through an international tribunal, considering the frigate was sunk under conditions of war.

25 years after ‘disaster’ declaration, major U.S. fishery makes a comeback
- In 2000, the U.S. commerce secretary declared the groundfish fishery on the U.S. West Coast a “disaster,” with 10 key species overfished to below a quarter of their healthy levels.
- Fisheries authorities empowered by federal conservation laws took drastic action: They cut off vast tracts of the ocean to trawling, slashed fishing quotas and bought fishing vessels to remove them from operation. Many fishers were thrown into painful retirement.
- Careful management and innovation in the intervening years has led to a remarkable turnaround: In October 2025, fishery officials declared the last of the 10 overfished species to be rebuilt, years earlier than expected, and fishers have catches they thought would never be possible again.
- Even so, fishers’ profits have been low, and experts worry that key conservation programs could lose their teeth to cost-cutting measures and deregulation.

Seafood fraud is rampant, imperiling fish populations, report finds
- Up to roughly 20% of aquatic products are intentionally mislabeled as the wrong species or otherwise fraudulent, posing environmental and health risks, according to a new report.
- Inaccurate representation of species is one of the most frequent forms of fraud, the report says.
- Other cons include misrepresenting place of origin or eco-certification status, and adulterating a product to affect its weight or appearance of freshness.
- The report calls for governments and industry stakeholders to establish better traceability systems, use advanced detection methods, and educate the public. An NGO expert says government action on traceability is key.

China’s Pacific squid fishery rife with labor, fishing abuses: Report
- A new report from U.K.-based NGO the Environmental Justice Foundation draws on interviews with 81 fishers, mainly Indonesian sailors who worked between 2021 and 2025 on 60 Chinese vessels targeting jumbo flying squid (Dosidicus gigas) in the Southeast Pacific Ocean.
- It documents frequent labor abuses affecting crew members, including several indicators of forced labor as described by the International Labour Organization.
- The report also documents regular shark finning, targeted hunting of marine mammals, and involvement in suspected illegal fishing incidents, often inside Ecuador, Peru or Chile’s exclusive economic zones.
- The report was launched days before the annual meeting of the commission of the South Pacific Regional Fishery Management Organisation, the intergovernmental body that manages the fishery. Officials with fishing organizations mentioned in the report and members of China’s delegation to the meeting did not respond to Mongabay’s request for comment on the report.

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 GTA 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 […]

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