location: Indian Ocean

location: Indian Ocean

Social media activity version | Lean version

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

Nepal’s release of endangered crocs into historical habitat raises concerns
- Nepal recently released 25 critically endangered gharials into a tributary of the Mahakali River to reintroduce them to historical habitats, but concerns have arisen over transparency and timing of the process.
- Gharials are released into the Chaudhar river, part of the Terai Arc Landscape, to augment dwindling populations, although previous translocations have yielded mixed results.
- Researchers highlight challenges faced by gharials, including migration obstacles due to dams and barrages, and they advocate for better timing of releases to optimize adaptation and survival.
- Issues such as lack of publicized government studies, potential influence of reciprocal gifts in translocation decisions and denial of budget-related motives are raised amid efforts to conserve gharials.

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

Madagascar signs new ‘sustainable’ tuna deal with the EU
- In late June, Madagascar and the European Union struck a new four-year deal allowing fishing vessels flagged to EU countries to resume harvesting tuna in Madagascar’s waters after an unusual four-and-a-half-year gap.
- The EU says the deal benefits Madagascar by providing key funding to support fisheries governance, and civil society groups praised the Madagascar government for creating a more inclusive and transparent negotiating process than in the past.
- However, critics contend that the deal offers little benefit to the citizens of Madagascar, one of the poorest countries in the world, and enables European vessels to exacerbate the overfishing of Indian Ocean tuna stocks.

As one Indian Ocean tuna stock faces collapse, nations scramble to save others
- Indian Ocean Tuna Commission members failed to make progress on key measures to protect declining yellowfin tuna (Thunnus albacares), like reducing annual catches and limiting the use of harmful fish aggregating devices (FADs), during their annual meeting.
- Although the commission declared yellowfin tuna overfished in 2015, to date, the intergovernmental regional management body has failed to curb overfishing, bringing the stock closer to collapse.
- Objections from the European Union helped nullify an ambitious plan adopted by the IOTC in February to limit the use of drifting FADs: Objecting parties don’t have to implement the measure, and the EU tuna fleet, which has historically pulled in the largest yellowfin tuna catches in the Indian Ocean, is the biggest deployer of DFADs in the region.
- The commission declared the Indian Ocean bigeye tuna (T. obesus) stock overfished in 2022, and at its meeting in May parties agreed to a 15% reduction from 2021 levels in the permitted annual catch; they also adopted protective measures for seabirds and marine mammals at the meeting, but not for sharks.

Machine learning makes long-term, expansive reef monitoring possible
- Conservationists can now monitor climate impacts to expansive marine ecosystems over extended periods of time, a task that used to be impossible, using a tool developed by scientists in the U.S.
- The machine learning tool, called Delta Maps, provides a new way to assess which reefs might be best suited for survival, and which play a key role in delivering larvae to others, and therefore should be targeted for preservation efforts, according to the scientists.
- The scientists used the tool to examine the impacts of climate change on connectivity and biodiversity in the Pacific Ocean’s Coral Triangle, the planet’s most diverse and biologically complex marine ecosystem.
- The authors also noted that the Coral Triangle had more opportunities for rebuilding biodiversity, thanks to the region’s dynamic climate component, than anywhere else on the planet.

End of the tuna FAD? Indonesia hopes so, but EU isn’t giving up just yet
- Indonesia has welcomed measures to cut back on the use of fish-aggregating devices, which critics blame for Indian Ocean tuna being caught at unsustainable rates.
- A senior Indonesian fisheries official says all countries on the Indian Ocean coast have a shared interest in tackling the overuse of FADs and in improving the conservation and management of the region’s tuna populations.
- In 2022, the Indian Ocean’s bigeye tuna population was declared overfished, while repeated violation of catch limits for skipjack tuna was reported.
- The European Union, whose fleet accounts for a third of the Indian Ocean tuna catch, has reportedly said it will object to the new resolution; in that event, its vessels will simply continue deploying FADs as usual, since the new measure isn’t enforceable.

Critics allege EU’s ‘toxic collusion’ with fishing lobbies is damaging Indian Ocean tuna
- Members of the Indian Ocean Tuna Commission (IOTC) agreed to reduce the use of drifting fish-aggregating devices (FADs) and to impose three-month closures on the devices, despite opposition from the European Union.
- The EU dominates Indian Ocean tuna fisheries; its fleet of industrial fishing vessels has long reeled in the lion’s share of tuna, including yellowfin, a stock that is now perilously close to collapse.
- Through their sheer numbers and influence in EU delegations, industrial fishing lobbyists have stymied efforts to impose appropriate catch quotas and limit the use of destructive fishing gear like FADs used extensively by EU vessels, an investigation by the French NGO BLOOM Association found.
- In a statement, the European Commission denied the NGO’s allegations that lobbyists shape its positions at IOTC talks, noting that the pandemic led to increased participation from stakeholders and that these stakeholders were observers and not authorized to negotiate on the commission’s behalf.

Invasive rats topple ecological domino that affects reef fish behavior
- A recent study reveals that the presence of invasive rats on islands can lead to behavioral changes in fish living on coral reefs offshore. A team of scientists found that damselfish have larger territories that they defend less aggressively on reefs near rat-infested islands.
- Rats and other rodents often tag along on ships. For hundreds of years, they’ve colonized islands around the world, where they feast on seabird chicks and eggs, decimating local populations.
- Seabirds deposit nutrient-rich guano on islands, some of which flows out to reefs and fertilizes the growth of algae.
- Smaller seabird numbers on rat-infested islands mean that fewer nutrients end up on reefs, and the algae there has lower nutritional value than off rat-free, seabird-rich islands. The study’s authors concluded that damselfish were less aggressive near islands with rats because it wasn’t worth the energy to defend a less valuable resource.

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

Top mangrove news of 2022
- Mangroves are unique forests adapted to live along the coasts in mostly tropical and subtropical areas of the world.
- Mangroves are in danger as they are cleared to make room for farms, mines, and other human developments.
- Mangroves provide a bevy of important ecosystem services such as flood and erosion control and greenhouse gas storage, and they provide habitat for many species.
- Below are some of the most notable mangrove news items of 2022.

Deep dive uncovers previously unknown underwater ecosystem in Maldives
- Scientists recently identified a previously undiscovered marine ecosystem in the waters around the Maldives, known as the “trapping zone,” about 500 meters (about 1,600 feet) below the surface.
- The researchers say the trapping zone refers to a region of subsea vertical cliffs and shelving terraces that “trap” small, migrating mesopelagic organisms, which attract pelagic predators like sharks, tuna and large fish.
- Prior to this mission, very little was known about the Maldivian sea below 30 m (about 100 ft), despite the country’s total area consisting 99% of water.
- The researchers say trapping zones likely exist in the waters around other oceanic islands with similar topography, and that they’re already gathering evidence of such an ecosystem in the waters of the Chagos archipelago, south of the Maldives.

Agulhas Current enigma: An oceanic gap in our climate understanding
- Comprehending the workings of western boundary ocean currents, like those of the Agulhas Current off the South African coast, may hold a key to Earth’s climate system. But understanding this particular current is hampered by a major lack of in-situ data. This gap leaves us in the dark about local, regional and global climate impacts.
- The Agulhas Current, located in the Indian Ocean, is one of the most energetic ocean current systems in the world. Changes to it can impact local weather in South Africa and elsewhere in the Southern Hemisphere, and perhaps influence large-scale climatic changes in the Northern Hemisphere and globally as well.
- However, it is not clear how and what these impacts may be, or when they may occur. With climate change escalating rapidly due to unabated human carbon emissions, it is now more important than ever that we understand the impacts of Southern Hemisphere ocean currents, and integrate their actions into climate models.
- But attempts at long-term monitoring of the Agulhas Current System have not been fully successful. Accomplishments and failures to date have underscored significant local research capacity challenges, and differences in the approach to, and financing of, ocean science in the Global North as compared to the Global South.

The Western Indian Ocean lost 4% of its mangroves in 24 years, report finds
- Analysis presented in a new report finds the Western Indian Ocean (WIO) region lost around 4% its mangrove forests between 1996 and 2020.
- The WIO region includes the coastal areas of Kenya, Tanzania, Madagascar and Mozambique, which together account for 5% of the world’s mangroves.
- The report finds the majority of WIO mangrove loss was driven by unsustainable wood extraction, land clearance for agriculture and the impacts of storms and flooding.
- Mangroves provide vital ecosystem services to coastal communities and habitats, and sequester large amounts of carbon.

Maldives shark-fishing ban tested by ebbing support from small-scale fishers
- A 2010 blanket ban on shark fishing in the Maldives doesn’t enjoy support from artisanal reef fishers, a new study suggests.
- Many fishers blamed sharks for stealing their catches, eating into their earnings, and damaging their fishing equipment — problems they perceive have worsened since the creation of a shark sanctuary.
- These negative perceptions could result in lower compliance with fishing restrictions and undermine efforts to revive shark populations in Maldivian waters.
- Pole-and-line skipjack tuna fishers reported the greatest support for the shark fishing ban because sharks corral tuna to the ocean surface, making them easier to catch.

200 mysterious sea turtle deaths: Q&A with Kenyan fisherman and turtle rescuer Daniel Katana
- Near the town of Marereni, smack in the middle of Kenya’s Indian Ocean coastline, a group of local volunteers has been protecting sea turtles and planting mangroves for nearly two decades.
- In the past two years, however, the Marereni Biodiversity Conservancy has documented alarming spikes in sea turtle deaths and in turtles with fibropapilloma tumors, as well as a decline in sea turtle nests.
- While the causes have yet to be determined, conservancy members suspect the sea turtles’ problems may be associated with pollution from nearby salt mines.
- Mongabay interviewed the group’s CEO, Daniel Masha Katana, about how it is responding to the current threats to sea turtles.

Murky provenance of a Chinese fleet clouds Madagascar shrimp fishery
- Thirty-nine trawlers are licensed to catch up to 4,170 metric tons of shrimp in Madagascar’s waters during the 2022 campaign, which officially began on March 1.
- Chinese-owned company Mada Fishery, which holds eight exploration rights did not apply to catch shrimp this year, and its eight vessels are now sitting idle.
- Three of the vessels were previously engaged in fishing violations in the Gambia, and under Malagasy law should not be eligible to fish in Madagascar now — unless there’s been a change in their ownership.
- But a murky document trail and general lack of transparency into the vessels’ ownership makes it unclear whether that has happened; transparency advocates say the implementation of simple measures would have made a significant difference in the investigation of Mada Fishery.

Spectacular new fish species is first to be named by Maldivian scientist
- A colorful reef fish from the Maldives is the first new-to-science species to be described by a Maldivian scientist.
- Cirrhilabrus finifenmaa has been named by Ahmed Najeeb, a biologist from the Maldives Marine Research Institute (MMRI), after the local word for “rose.”
- Subtle physical differences and DNA analyses confirmed the rose-veiled fairy wrasse is a separate species from the already known rosy-scales fairy wrasse (Cirrhilabrus rubrisquamis).
- Researchers say the newly described fish is already being sold for the aquarium trade, calling it “unsettling when a fish is already being commercialized before it even has a scientific name.”

Seychelles embraces transparency in fisheries, but gaps in data and action remain
- Launched in 2015, an enterprise known as the Fisheries Transparency Initiative (FiTI) is working to make fisheries more transparent and sustainable.
- The Seychelles joined FiTI in 2017 and recently released its second report to the initiative, which details its government’s efforts to increase public access to information about the management and direction of its fisheries.
- The information released in this report has substantially increased fisheries transparency in the Seychelles, and elucidated the national and foreign fishing interests that are straining local stocks, including yellowfin tuna.
- However, experts say there are still many information gaps and issues that need to be overcome in fisheries management in the Seychelles.

Two storms in two weeks carve trail of death and destruction in Madagascar
- Batsirai, a category 4 cyclone, struck Madagascar’s eastern coast on Feb. 5, leaving 10 people dead.
- The island nation is still recovering from another tropical storm, Ana, which made landfall on Jan. 22 and left dozens dead and hundreds of thousands homeless.
- Data from the U.S. National Oceanic and Atmospheric Administration show that 12 storms of category 4 or 5, the highest level, made landfall on Madagascar between 1911; of these 12, eight occurred since 2000.

Bleached reefs still support nutritious fish, study finds
- A recent study published in the journal One Earth looked at the nutrients available in fisheries in Seychelles before and after bleaching killed around 90% of the island nation’s coral in 1998.
- Warming ocean temperatures have caused mass bleaching of corals across the tropics, sometimes causing the deaths of these reef-building animals, and the phenomenon is expected to continue as a result of climate change.
- The research found that bleached reefs continue to support fisheries that provide essential micronutrients to human communities.

‘Great Blue Wall’ aims to ward off looming threats to western Indian Ocean
- Ten nations in the western Indian Ocean committed this November to create a network of marine conservation areas to hasten progress toward the goal of protecting 30% of the oceans by 2030.
- Less than 10% of the marine expanse in this region currently enjoys protection, and a recent assessment highlighted the price of failure: all the coral reefs are at high risk of collapse in the next 50 years.
- The focus of these efforts won’t just be coral reefs, but also mangroves and seagrass meadows, a lesser-known underwater ecosystem critical for carbon sequestration and oceanic biodiversity.
- Even as overfishing and warming take a toll on marine health, threats from oil and gas extraction are intensifying in this corner of the Indian Ocean.

We must reverse the pressures on coral reefs before it’s too late (commentary)
- In a letter addressed to state leaders, local governments, and business leaders of the Western Indian Ocean, David Obura and Melita Samoilys urge action to protect coral reefs off East Africa.
- Obura and Samoilys, both leaders of Coastal Oceans Research and Development-Indian Ocean/East Africa, present evidence that coral reefs in the Western Indian Ocean are at a tipping point.
- “We cannot overstate how close our coral reefs are to collapse,” they state. “If we don’t make the right decisions in the next 10 years, coral reefs of the Western Indian Ocean will become irreversibly damaged.”
- This post is a commentary. The views expressed are those of the authors, not necessarily Mongabay.

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

Insects and other invertebrates on tropical islands face challenges as development and tourism expand
- Oceanic islands host 50 percent of the world’s endangered species, but human activities can greatly disturb these isolated ecosystems.
- The number and diversity of insects and other invertebrate species decrease on islands dedicated to urban development or tourism, according to a new study in the Maldives.
- Fragmented habitats take a toll on these species on urban islands, while pesticides are the suspected culprits on tourist islands.

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

The first complete map of the world’s shallow tropical coral reefs is here
- Scientists have completed the first-ever global, high-resolution map of the world’s shallow tropical coral reefs.
- When combined with an integrated tool that tracks global coral bleaching events in near-real-time, the new resource provides a comprehensive overview of the trends and changes in global coral reef health.
- While the completion of the map is an achievement in itself, the scientists behind the Allen Coral Atlas say they hope the new resource will spur action to improve coral reef protection.
- The new mapping platform is already being used to support conservation projects in more than 30 countries, including designation of marine protected areas and to inform marine spatial plans.

New research hopes to shine a light on wedgefish, the ‘pangolin of the ocean’
- Wedgefish, a type of ray, are some of the least-known and most endangered fish in the ocean.
- A new research project in Mozambique is employing two types of tags, acoustic and satellite, to better understand two of these critically endangered species.
- Researchers aim to uncover the species’ range and habitat requirements to preserve them from extinction.
- Wedgefish are heavily targeted by the shark-fin trade, and their populations have declined precipitously throughout much of their range.

Indonesia to send more tuna vessels out into international waters
- Indonesia is boosting its tuna-fishing fleet in the high seas, taking advantage of increased harvest quotas.
- The plan is part of a five-year sustainable tuna fisheries policy update to be issued by the Indonesian fisheries ministry by the end of August.
- In addition to the fleet expansion, the ministry also has plans to adopt a tuna-harvest strategy for the country’s waters; limit the number of operating fish aggregating devices; and reduce the carbon footprint of its vessels.
- Indonesia is the world’s top producer and exporter of tuna.

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

‘Watered-down’ plan to save Indian Ocean yellowfin tuna disappoints conservationists
- Highly contentious negotiations this month over Indian Ocean yellowfin tuna catches have led to the adoption of an interim plan proposed by the Maldives, a major tuna fishing nation.
- The issue has pitted distant-water fishing parties like the EU against Indian Ocean countries like the Maldives, Indonesia and Iran that share a coast with the ocean.
- The EU has historically reeled in about a third of yellowfin tuna catches that feed a highly profitable industry, while most coastal states have subsistence fisheries that occur within their own waters.
- The EU’s refusal to take deeper cuts, and objections posed by five coastal states, will make it very difficult to curb overfishing in 2022, when the plan will be enforced, experts say.

Climate change isn’t fueling algal blooms the way we think, study shows
- A team of international researchers recently published the first global assessment of harmful algal blooms (HABs) — events in which toxic algae proliferate and cause harm to marine life and humans — based on nearly 10,000 recorded events between 1985 and 2018.
- The study found that there are no global trends that would suggest that climate change is having a uniform impact on HABs throughout the world, although this is a commonly held belief.
- The researchers were able to detect clearer regional trends that showed increases, decreases or no significant changes in HABs in certain parts of the world.
- It also found that there was a perceived increase in HABs amid the booming aquaculture industry, although the study does not necessarily suggest that aquaculture is causing an increase in HABs.

NGOs back Maldives’ ambitious plan to save Indian Ocean yellowfin tuna
- As the Indian Ocean Tuna Commission begins its 2021 annual meeting, the item at the top of its agenda: how to save the overfished Indian Ocean yellowfin tuna (Thunnus albacares) stock from collapse.
- The crisis has pitted a group of distant-water fishing nations led by the EU, which hauls in the largest share of yellowfin, against Indian Ocean states like the Maldives, Kenya and South Africa.
- Two proposals are currently under discussion, one from the Maldives, backed by coastal states, many of whom are developing countries, and the other from the EU, which enjoys the support of other distant-water fishing nations like South Korea and Japan.
- Experts say the Maldives’ plan would result in deeper reductions to catches, a starting point to end overfishing and rebuild the stock, and is more equitable than the EU’s proposal.

Satellites keep watch over global reef health in a world first
- Scientists working with the Allen Coral Atlas just launched the world’s first global, satellite-based reef-monitoring system.
- This tool can track global coral bleaching events in near-real-time and provide an overall view of trends and changes in coral reef health that can be used to inform conservation efforts and policy.
- A beta version of the system that was piloted in Hawai‘i during the 2019 Pacific heat wave, and helped identify bleaching hotspots as well as resilient corals that could be used for reef restoration.

New Australian marine parks protect area twice Great Barrier Reef’s size
- The Australian government has moved to create two new marine protected areas that cover an expanse of ocean twice the size of the Great Barrier Reef Marine Park.
- The two parks will be established around Christmas Island and the Cocos (Keeling) Islands in the Indian Ocean to the northwest of continental Australia.
- The new parks, which cover to 740,000 square kilometers (286,000 square miles) of ocean, raise the protected share of Australia’s oceans from 37% to 45%.
- The decision was immediately welcomed by conservation groups.

Ghost fish: after 420 million years in the deeps, modern gillnets from shark fin trade drag coelacanths into the light
- Undersea canyons off Madagascar may turn out to be the Indian Ocean epicentre for coelacanths, the remarkable “fossil fish” which re-surfaced from apparent extinction in 1938.
- Coelacanths have turned up with unexpected frequency in gill-nets set in deep waters to catch sharks for new, commercial markets.
- A worrying trend in recent coelacanth catches in Madagascar is the high proportion of pregnant females, which are thought to produce just 140 live babies during their entire lifecycle.
- Marine scientists are calling for reinforcement of conservation measures to protect this population from the pressure of incidental gill-net captures driven by the shark fin trade.

Podcast: Two tunas and a tale of managed extinction
- On this episode of the Mongabay Newscast, we take a look at the tales of two tuna: yellowfin tuna in the Indian Ocean, and bluefin tuna in the Atlantic.
- Mongabay staff writer Malavika Vyawahare tells us about the series of articles she wrote looking at how EU-controlled fleets dominate the annual yellowfin tuna haul in the Indian Ocean, and how that impacts developing island nations like Seychelles.
- We also speak with author Jen Telesca about her recent book Red Gold: The Managed Extinction of Giant Bluefin Tuna, which details how, under the watch of the International Commission for the Conservation of Atlantic Tunas, the Atlantic bluefin tuna has become such a prized catch that it’s being driven to extinction.

Sharks on a knife’s edge as Maldives mulls lifting 10-year fishing ban
- Eleven years ago, the Maldives created a 90,000-square-kilometer (34,750-square-mile) sanctuary that banned shark fishing, but fisheries minister Zaha Waheed said recently that the government may be planning to lift the ban.
- Conservationists say reopening shark fisheries in the Maldives would have devastating effects on shark populations and adversely affect tourism, which brings millions of dollars into the country each year.
- There are unofficial reports the Maldivian government will not be lifting the shark fishing ban, possibly in response to the local and international outcry.
- But a local expert says there are still grounds for concern if long-line fisheries are allowed to operate in the shark sanctuary, or if a legislative loophole is introduced that would allow shark fishing to recommence in some capacity.

Sea turtles under threat as Indian government weighs development in Andaman Islands
- Little Andaman Island is part of a rainforested archipelago far off India’s eastern coast in the Bay of Bengal.
- An Indian government think tank has proposed developing the island along with another in the archipelago. If implemented, experts say the plan would pose a threat to nesting sites of leatherback sea turtles, whose population globally is declining.
- The leatherback is the largest of all living turtles, and India and Sri Lanka are the only places in South Asia with large nesting populations.
- The island is also home to the Onge Indigenous tribe.

European tuna boats dump fishing debris in Seychelles waters ‘with impunity’
- Tuna love to congregate around objects adrift at sea, so industrial fishing vessels release thousands of man-made plastic-heavy fish aggregating devices (FADs) into the sea every year to round up the tuna.
- In the Indian Ocean, the European-dominated purse seine tuna fishery relies heavily on FADs and is largely responsible for the waste that collects on remote biodiversity hotspots like Seychelles’ Aldabra atoll, experts say.
- FADs are also partly responsible for pushing the Indian Ocean yellowfin tuna stock to the brink of collapse, but efforts to move away from harmful FADs lack urgency.
- This is the second story in a two-part series about the effect European tuna fishing has on the economy and marine environment of Seychelles, an archipelagic nation in the Indian Ocean.

Red flag: Predatory European ships help push Indian Ocean tuna to the brink
- The Indian Ocean yellowfin tuna stock is teetering on the verge of collapse and some experts say the EU, which has profited the most from the fishery over decades, should do more to save it.
- EU-controlled ships, including those flagged to smaller coastal states like Seychelles, haul in the lion’s share of Indian Ocean tuna, supplying a market worth billions of dollars.
- Overfishing by these vessels, and the EU’s less-than-ambitious proposal to restore the yellowfin stock, has led to allegations of a “neo-colonial” plunder of resources that many developing nations depend on.
- This is the first story in a two-part series about the effect European tuna fishing has on the economy and marine environment of Seychelles, an archipelagic nation in the Indian Ocean.

Ocean protection scheme can yield ‘triple benefits’ study says
- A new study suggests that carefully planned marine protected areas could yield triple benefits for the ocean, helping to maintain biodiversity, while also increasing fish yields and maximizing the ocean’s ability to sequester carbon in seafloor sediment.
- This study is one of the first to quantify the carbon footprint of ocean trawling, which it equates to the yearly emissions of the global aviation industry.
- The researchers suggest that the planning tools in this study could help inform discussions about how to protect 30% of the oceans by 2030, a goal that is expected to be adopted by the U.N. Convention on Biological Diversity later this year.
- Other proposals for how to achieve 30% protection by 2030 have mostly focused on the high seas, but this plan takes all parts of the ocean into consideration.

From penguins to sharks to whales, swimming in circles is a surprisingly common trait
- Many marine animals are intentionally swimming in circles consecutively at a relatively constant speed more than twice, according to a new study using data from movement trackers.
- The researchers say the behavior is surprising in part because swimming in a straight line is known to be the most efficient way to move about.
- They found some of the animals swim in circles during different activities, including foraging, courtship, navigation and even possibly geomagnetic observations.

Study calls for a marine reserve in a $500m fishing hotspot in Indonesia
- A new study proposes establishing a marine protected area in Indonesia’s Java Sea-Makassar Strait region, one of the top fishing grounds in the country.
- The study found that much of the commercially valuable snapper and grouper species caught in these shallow waters are juveniles, which compromises the sustainability of the species’ populations and of the $500 million fishery itself.
- Another expert says imposing an MPA in this key fishing area would be a bureaucratic challenge, and instead suggests introducing an annual close season, similar to the one for yellowfin tuna in Indonesia’s Banda Sea.
- The study authors have also called for a change in consumer behavior, noting that the desire for snappers that fit on a plate is what drives the fishing of juveniles.

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

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

Blooms driven by climate change threaten to smother marine life in Arabian Sea
- A strange single-celled organism that acts both as a plant and an animal has come to dominate wintertime algal blooms in the northern Arabian Sea.
- Winter blooms of Noctiluca scintillans, also known as the sea sparkle, have displaced microscopic algae called diatoms that form the basis of the marine food chain, a paper in Nature says.
- Scientists at Columbia University fear the outbreaks could herald massive declines in fisheries in the region, potentially impacting millions of fishers in India, Pakistan, Iran, Oman and Yemen.
- They have linked the emergence of N. scintillans blooms with the loss of ice cover in the Himalayan-Tibetan Plateau driven by climate change.

Flip-flops, fishing gear pile up at Aldabra, a UNESCO World Heritage Site
- More than 370,000 flip-flops from all over the world are piling up on the Aldabra coral atoll In Seychelles, one of the remotest corners of the planet and a UNESCO World Heritage Site, according to a new study.
- The second-largest atoll in the world, with a vast lagoon enclosed by raised coral atolls, Aldabra is home to the India Ocean’s last giant tortoises and only flightless bird species, among other rare and threatened wildlife.
- The authors of the new paper estimate that plastic garbage from fishing vessels accounts for more than 80% of the trash on the atoll by weight.
- They calculate that recovering the plastic trash on Aldabra could cost as much as $7.3 million, a large price to pay for a small island nation like Seychelles.

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

Mauritius grapples with worst environmental crisis in a generation
- A ship that ran aground on a coral reef has leaked about 900 tons of fuel oil into the waters off the southeastern coast of Mauritius.
- The incident occurred on July 25, and by Aug. 6 the Japanese-owned ship started to spill oil from its fuel tank, leading Mauritian authorities to declare an environmental emergency.
- The oil sludge threatens Pointe d’Esny, the largest remaining wetland in Mauritius, and other ecologically sensitive areas like the Ile aux Aigrettes Nature Reserve, Blue Bay Marine Area, and Mahebourg Fishing Reserves.
- Water currents appear to be carrying the oil slick north along the eastern shoreline, putting mangrove forests in harm’s way.

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

Sea turtles often lose their way, but always reach their destination
- A new study found that green sea turtles rely on a “crude map” to navigate the ocean, often going several hundred kilometers off course before successfully arriving at their destination.
- Using GPS tracking devices, the research team tracked the migrations of female green turtles from nesting grounds on Diego Garcia Island in the Indian Ocean to foraging grounds on isolated oceanic islands.
- Green turtles demonstrate a particularly high fidelity to foraging grounds, which made them an ideal species to study.
- The researchers say they hope their findings will help inform conservation efforts to protect green turtles, which are an endangered species.

One-two punch of drought, pandemic hits Madagascar’s poor and its wildlife
- Because of the fallout from the COVID-19 pandemic, for the first time in years poverty is rising in Madagascar, already one of the poorest countries in the world.
- Near Tsimanampesotse National Park in the southwest of the country, the loss of tourists has coincided with a disastrously dry rainy season, and restrictions associated with the pandemic are adding to rural distress; an estimated half a million people will need food aid in the coming months.
- Erratic rainfall patterns and food scarcity don’t just affect humans but also the lemurs living in the park, according to Lemur Love, a nonprofit that works in Tsimanampesotse National Park.
- The hunger crisis created by the drought and compounded by the pandemic could force people to lean even more heavily on nature; to impinge on forests and consume more wild meat to survive.

Scientists agree on the need to protect 30% of the seas. But which 30%?
- Scientists recommend protecting at least 30% of the ocean by 2030 to safeguard biodiversity, avoid fishery collapse and build ocean resistance to climate change.
- In 2018 and 2019, representatives from the United Nations were negotiating a high seas treaty to meet this goal through a network of marine protected areas (MPAs) throughout the open ocean, but the meeting meant to finalize the treaty in March was delayed due to COVID-19.
- Two reports were presented to show how to practically protect 30% of the ocean: one from a group of researchers from University of Oxford, the University of York and Greenpeace, and the other from the University of California, Santa Barbara, and other universities and institutions.
- The two reports used different methodologies and had slightly different results, but they also showed considerable overlap in their recommendations of safeguarding certain areas of biological and ecological importance.

Indigenous solutions to climate crisis could lie in archaeology, experts say
- Indigenous knowledge has only recently begun to be seriously considered in international climate policy debates, and as the discussion forms, archaeologists believe their field provides important context of “historical injustices” that continue to prevent indigenous peoples from adapting to climate change.
- Through oral histories and the archaeological record, scientists and policymakers can more acutely recognize how locals lived and adapted to climate change for centuries before the arrival of colonial policies, the authors say.
- In the southwestern Indian Ocean and Caribbean, the two archaeologists find that before ecosystem-transforming actions, locals were able to adapt to climate changes, and some of those tactics can be revived.

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

What one of the world’s most active volcanoes tells us about missing trees
- Lava flows from the Piton de la Fournaise, one of the most active volcanoes in the world, are helping scientists study the long-term impacts of human settlement on forests on La Réunion, an island off the eastern coast of Africa.
- The disappearance of large frugivores like giant tortoises and flying foxes from the island by the end of the 18th century after humans settled permanently on the island has shaped its plant communities as well.
- A group of researchers at the University of La Réunion looked at eruptions dated between 1401 and 1956, to study how plant recovery differed following lava flows that took place before human settlement and after.
- They found that large-fruited trees faded away from the landscape after the animals that were capable of dispersing their seeds were lost because of overhunting, habitat loss and introduction of invasive species by human settlers.

Seychelles extends protection to marine area twice the size of Great Britain
- The archipelago in the Indian Ocean has committed to protecting 400,000 sq km (154,000 sq miles) of marine area, about 30% of its waters.
- Conservationists say it is a step in the right direction, but the bigger challenge will be for the government to effectively manage the vast network of marine protected areas (MPAs).
- A ‘debt-for-nature’ deal allowed the country to restructure its sovereign debt and leverage $21.6 million to fund the creation of the MPAs and adaptation to climate change.
- Seychelles hosts giant tortoises, nesting sites for turtles, and fragile coral reef ecosystems that the new MPAs aim to protect.

Plastic trash kills half a million hermit crabs on remote islands each year
- An estimated 570,000 hermit crabs become trapped and die in plastic containers on the remote Cocos (Keeling) Islands and Henderson Island each year, according to a new study.
- Accumulated plastics on beaches could cause a serious decline in hermit crab populations, the study’s authors say.
- Hermit crabs are at risk on beaches globally where crabs and plastic pollution overlap.

Any illegal fishing going on around here? Ask an albatross
- Albatrosses fitted with tiny radar-detecting trackers can help spot fishing vessels that have gone “dark” by turning off their AIS onboard tracking systems, a new study has found.
- Over a six-month period, 169 wandering and Amsterdam albatrosses fitted with GPS trackers covered more than 47 million square kilometers in the southern Indian Ocean, detecting radar signals from 353 different boats in the process.
- In international waters, 37% of the boats had no AIS signal, a clue they could be engaged in illegal activity; within countries’ exclusive economic zones, nearly 26% of the boats were without an AIS signal.
- The findings suggest the seabirds could be deployed to patrol the ocean for vessels operating illegally, complementing a growing body of detection methods.

Feeds: news | india | latam | brasil | indonesia