Category Archives: Oceans

Mackerel loses sustainable status as overfishing puts species at risk

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Marine Conservation Society calls for better regulation of how north-east Atlantic mackerel is caught as stocks decline

Mackerel populations are declining because of overfishing and the fish no longer a sustainable food choice, the Marine Conservation Society has said in its new UK guide to sustainable seafood.

North-east Atlantic mackerel has been considered an environmentally-friendly choice for consumers since before 2011, but the species has become increasingly scarce and now experts are calling for more regulation over how its caught.

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Japan’s new whaling ‘mother ship’ being built to travel as far as Antarctica

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Company says vessel’s construction will help ‘pass on our whaling culture to the next generation’

A Japanese company is building a new whaling ship designed to travel as far as Antarctica, sparking fears commercial operations could resume in the Southern Ocean.

Australia’s environment minister, Tanya Plibsersek, reaffirmed the Albanese government’s commitment to a global moratorium on commercial whaling, while Greenpeace condemned the practice as “brutal and unnecessary”.

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Canada announces plans to protect vast marine zone with Great Bear Sea project

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Political and Indigenous leaders hope to replicate success of British Columbia’s Great Bear Rainforest conservation area

Nearly a decade ago, Canadian political leaders, environmental activists and Indigenous nations came together to shelter a sprawling 6.4 million-hectare area of trees, sea wolves, salmon and grizzly bears – a project that was named, with some branding acumen, the Great Bear Rainforest.

The plan has since been hailed as a triumph for protecting swathes of old-growth cedar and spruce and drawing global attention to an area of pristine forest the size of Ireland.

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Leaked video footage of ocean pollution shines light on deep-sea mining

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Company rebuts claims by scientists that ‘uncontrolled and unscientific’ practices highlight dangers of going ahead with seabed mining

Video footage from a deep-sea mining test, showing sediment discharging into the ocean, has raised fresh questions about the largely untested nature of the industry, and the possible harms it could do to ecosystems as companies push to begin full-scale exploration of the ocean floor as early as this year.

The Metals Company (TMC), a Canadian mining firm that is one of the leading industry players, spent September to November of last year testing its underwater extraction vehicle in the Clarion Clipperton Fracture Zone, a section of the Pacific Ocean between Mexico and Hawaii.

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Brazil sinks aircraft carrier in Atlantic despite presence of asbestos and toxic materials

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Environmental activists had sought to halt the planned scuttling of the warship, warning that it could pollute the marine food chain

Brazil has sunk a decommissioned aircraft carrier despite environmental groups claiming the former French ship was packed with toxic materials.

The “planned and controlled sinking occurred late in the afternoon” on Friday, 350km off the Brazilian coast in the Atlantic Ocean, in an area with an approximate depth of 5,000 meters (16,000 feet), the navy said in a statement.

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M&S joins calls for EU to restrict harmful tuna fishing methods in Indian Ocean

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Retailer and green groups warn of ‘high environmental cost’ of fish aggregating devices to tuna stocks and other endangered marine life

The EU is under pressure to significantly restrict its huge fleet of fishing vessels from using “fish aggregating devices” that make it easier to catch huge numbers of fish and contribute further to overfishing.

A letter signed by Marks & Spencer and more than 100 environmental groups, including the International Pole and Line Foundation, warns EU officials that the devices (FADs) are one of the main contributors to overfishing of yellowfin tuna in the Indian Ocean, because they catch high numbers of juveniles.

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Food, feed and fuel: global seaweed industry could reduce land needed for farming by 110m hectares, study finds

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Scientists identify parts of ocean suitable for seaweed cultivation and suggest it could constitute 10% of human diet to reduce impact of agriculture

An area of ocean almost the size of Australia could support commercial seaweed farming around the world, providing food for humans, feed supplements for cattle, and alternative fuels, according to new research.

Seaweed farming is a nascent industry globally but the research says if it could grow to constitute 10% of human diets by 2050 it could reduce the amount of land needed for food by 110m hectares (272m acres) – an area twice the size of France.

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Freshwater fish more contaminated with ‘forever chemicals’ than in oceans

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Study also says eating one serving of fish with PFAS could be equivalent to drinking contaminated water every day for a month

Wild caught, freshwater fish in the United States are far more contaminated with toxic PFAS “forever chemicals” than those commercially caught in oceans, and the highest levels are found in fish from the Great Lakes, a new analysis of federal data suggests.

The peer-reviewed study by public health advocate Environmental Working Group (EWG) also found eating one serving of US freshwater fish contaminated with median PFAS levels could be equivalent to drinking highly contaminated water every day for a month.

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Trevor McDougall wins $250,000 science prize for researching ‘thermal flywheel’ of climate system

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Oceanographer takes top honours in prime minister’s prizes for science after researching ocean’s role in regulating climate

When Trevor McDougall began studying the ocean in the 1970s he had no idea that his field would become a crucial part of climate science.

The University of New South Wales professor was on Monday awarded the top honour at the prime minister’s prizes for science for his contributions to the field of oceanography and research on the ocean’s role in regulating the climate.

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Germany calls for ‘precautionary pause’ before deep-sea mining industry starts

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Berlin urges International Seabed Authority to prioritise nature as it debates rules and warns seabed mining may ‘destroy ecosystems’

Germany has called for a pause in the controversial deep-sea mining industry, saying not enough is known about the likely impacts of digging up the ocean floor for metals.

While other nations, including Spain and New Zealand, have previously called for a temporary halt to any exploitation of deep-sea metals, Germany, the world’s fourth biggest economy, is the most significant nation to voice its opposition to date. The country holds two of the 22 licences for exploration of the seabed.

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Thin fish, small catches: can Japan’s sushi culture survive climate crisis?

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Global heating is warming waters, changing salmon and tuna migration – and hurting fisheries

There is little at Shiogama seafood market to suggest that Japanese consumers could one day be deprived of their favourite seafood – from giant crab’s legs simmering in a winter nabe hotpot to spheres of salmon roe resting on a bed of rice wrapped in nori seaweed.

Stalls heave with huge sides of bluefin tuna, expertly transformed into more manageable portions by knife-wielding workers, while early-morning shoppers pause to inspect boxes of squid, flounder and sea pineapples landed only hours earlier.

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Amount of ocean heat found to be accelerating and fuelling extreme weather events

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The rate of warming in the top 2km has doubled from levels in the 1960s, review finds

The amount of heat accumulating in the ocean is accelerating and penetrating ever deeper, with widespread effects on extreme weather events and marine life, according to a new scientific review.

One of the report’s authors said the devastating floods in eastern Australia had likely been made worse by warming oceans. The risks would continue to rise as the ocean took up more heat, the report said.

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Coogee beach among NSW swimming spots with ‘poor’ water quality amid La Niña deluge

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Twice the number of sites have been exposed to concerning levels of pollution and sewage since 2019, government report finds

One in five swimming spots in New South Wales have been rated as having “poor” or “very poor” pollution levels, including Sydney’s popular Coogee beach, after the state experienced its wettest summer in a decade.

Twice the number of beaches, lakes and lagoons have been exposed to concerning levels of pollution and sewage since 2019, according to the annual state of the beaches report released by the NSW Department of Planning and Environment.

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Could a digital twin of Tuvalu preserve the island nation before it’s lost to the collapsing climate?

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With rising seas expected to submerge the nation by 2100, official says ‘we should always be able to remember Tuvalu as it is, before it disappears’

When Tuvalu vanishes beneath rising seas, its diaspora still want somewhere to call home – and that could be a virtual version of the tiny Pacific nation.

Global heating is threatening to submerge Tuvalu by the end of the century, and its 12,000 inhabitants are considering the future.

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Weak controls failing to stop illegal seafood landing on EU plates, investigation shows

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EU financial watchdog blames small fines and feeble controls in some states for amount of illegal seafood


Illegally fished seafood continues to end up on the plates of EU citizens due to weak controls and insignificant fines in some member states, auditors have found.

The European Union, the world’s largest importer of fishery products, requires member states to take action against fishing vessels and EU nationals engaged in illegal fishing activities anywhere in the world.

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Tintagel among castles at risk unless England can hold back the tide

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English Heritage identifies six most vulnerable sites as climate change intensifies coastal erosion

The wonderful wildness of the spot, a rocky Cornish headland pounded relentlessly by Atlantic breakers, has inspired poets, artists and dreamers for many a century.

But Tintagel, immortalised in British mythology as the place of King Arthur’s conception, is one of a string of castles at risk of tumbling into the sea as climate change increases the pace of coastal erosion.

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Antarctic researchers gain insights from on high as they count seals from space

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Scientists used satellite images and more than 300,000 volunteers to count Weddell seals, a key Southern Ocean indicator species

Researchers believe they have accurately estimated Antarctica’s Weddell seal population for the first time – using images from space and the eyes of hundreds of thousands of citizen scientists.

Weddell seals are a key indicator species in the Southern Ocean, for both sea ice fluctuations and shifts in the food web. They can live up to 30 years in the harsh conditions of the coastal sea ice of Antarctica, but until recently, counting them has been risky and cost-prohibitive.

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EU slammed over failure to protect marine life from ‘destructive’ fishing

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Strict no-take policies urged by scientists, who note there is less protection in 59% of marine protected areas than outside MPAs

The waters of the EU are in a “dismal” state, with only a third of fish populations studied in the north-east Atlantic considered to be in good condition, according to more than 200 scientists and conservationists.

The analysis, issued on Monday, follows a scathing report from the European court of auditors two years ago, which warned that the EU had failed to halt marine biodiversity loss in Europe’s waters and to restore fishing to sustainable levels.

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Eustice defends ‘utter failure’ of efforts to cut raw sewage discharges in England

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Environment secretary responds to criticism of plan to stop ‘literal shit being pumped into rivers and seas’

The environment secretary, George Eustice, insisted the government was tackling the millions of hours of raw sewage discharges into rivers and seas in England as MPs demanded answers to a summer of water companies dumping effluent into holiday swimming spots.

Caroline Lucas, the Green party MP for Brighton Pavilion, said: “Literal shit is being pumped into our rivers and seas. The state of our water network is a national scandal and the government has utterly failed to take action.”

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South African court bans offshore oil and gas exploration by Shell

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Judgment is huge victory for campaigners concerned about effect of seismic waves on marine life

A South African court has upheld a ban imposed on the energy giant Shell from using seismic waves to explore for oil and gas off the Indian Ocean coast.

The judgment delivered in Makhanda on Thursday marks a monumental victory for environmentalists concerned about the impact the exploration would have on whales and other marine life.

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