Category Archives: Oceans

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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‘Time has run out’: UN fails to reach agreement to protect marine life

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This fifth round of discussions was meant to establish a UN Ocean Treaty that would protect biodiversity in international waters

The latest round of talks at the United Nations aimed at securing protections for marine life in international waters that cover half the planet ended without agreement Saturday.

The fifth round of discussions, which began two weeks ago, were designed to establish a UN Ocean Treaty that would set rules for protecting biodiversity in two-thirds of the world’s oceanic areas that lie outside territorial waters.

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Norway was right to put down Freya the walrus, prime minister says

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Jonas Gahr Støre speaks out after criticism from campaigners, while a zoologist says decision was inevitable

Norway’s prime minister has said it was “right” to put down Freya, a 600kg (1,300lb) female walrus euthanised on Sunday in Oslo fjord, as animal rights campaigners attacked the decision but a leading zoologist insisted it was inevitable.

“I support the decision to euthanise Freya,” Jonas Gahr Støre told the public broadcaster NRK on Monday. “It was the right decision. I am not surprised that this has led to many international reactions. Sometimes we have to make unpopular decisions.”

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Shipwreck of Captain Cook’s Endeavour being eaten by ‘termites of the ocean’, expert says

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Shipworms and crustaceans called gribbles have infiltrated the wood of the vessel off Rhode Island

There are fears the wreck of Captain James Cook’s Endeavour is being destroyed by shipworms, the “termites of the ocean”.

In February the Australian Maritime Museum announced that the shipwreck, in waters off the coast of Rhode Island in the US, was “the final resting place” of that famous historical ship.

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Environment Agency pension fund criticised for owning stakes in UK water firms

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Campaigner Feargal Sharkey says profiteering from firms that dump raw sewage into rivers an ‘obscenity’

The Environment Agency’s pension fund owns stakes in a string of British water firms – despite the watchdog calling for industry bosses to be jailed over shocking pollution levels, the Guardian can reveal.

An analysis of the Environment Agency Pension Fund’s investments shows it holds shares or bonds worth £28m in six of the largest water companies.

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‘Underweight’ beluga whale in France’s River Seine near Paris prompts rescue effort

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Drones used to track mammal in ‘worrying’ health amid struggle to guide it back to Channel

A beluga whale that swam up the River Seine in France appears to be underweight and officials are worried about its health, regional authorities say.

The protected species, usually found in cold Arctic waters, had made its way up the waterway and reached a lock about 70km (44 miles) from Paris.

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‘Magnificent’ jellyfish found off coast of Papua New Guinea sparks interest among researchers

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Veteran diver struck by ‘intricate detail’ sent footage to be uploaded to Jellyfish app

A diver has captured footage of an unusual-looking jellyfish off the coast of Papua New Guinea, sparking interest among researchers.

The video was captured by Dorian Borcherds, who owns Scuba Ventures in Kavieng, in the New Ireland province of PNG.

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