Ecologically important Diadema africanum almost eliminated by unknown disease in Canary Islands

A marine pandemic is bringing some species of sea urchin to the brink of extinction, and some populations have disappeared altogether, a study has found.

Since 2021, Diadema africanum urchins in the Canary Island archipelago have almost entirely been killed by an unknown disease. There has been a 99.7% population decrease in Tenerife, and a 90% decrease off the islands of the Madeira archipelago.

A fin whale washed ashore in Anchorage and was left there for months. Then a self-described ‘wacko’ museum director made a plan

When a whale dies, its body descends to the bottom of the deep sea in a transformative phenomenon called a whale fall. A whale’s death jump-starts an explosion of life, enough to feed and sustain a deep-ocean ecosystem for decades.

There are a lot of ways whales can die. Migrating whales lose their way and, unable to find their way back from unfamiliar waters, are stranded. They can starve when prey disappears or fall to predators such as orcas. They become bycatch, tangled in fishing lines and nets. Mass whale deaths have been linked to marine heatwaves and the toxic algae blooms that follow.

Dramatic scenes in the water prompt warnings to swimmers and snorkelers at one of Australia’s most popular holiday destinations

An abundance of baitfish has drawn in hundreds of sharks to feed in the shallows around Byron Bay, creating dramatic scenes at one of Australia’s most popular holiday destinations.

The multi-day event was captured by many Byron locals, who shared footage of the sharks, including black tip whalers, dusky whalers and bull sharks, as they fed on the large school of fish over the weekend.

Kolahoi is one of many glaciers whose decline is disrupting whole ecosystems – water, wildlife and human life that it has supported for centuries

From the slopes above Pahalgam, the Kolahoi glacier is visible as a thinning, rumpled ribbon of ice stretching across the western Himalayas. Once a vast white artery feeding rivers, fields and forests, it is now retreating steadily, leaving bare rock, crevassed ice and newly exposed alpine meadows.

The glacier’s meltwater has sustained paddy fields, apple orchards, saffron fields and grazing pastures for centuries. Now, as its ice diminishes, the entire web of life it supported is shifting.

UN GEO report says ending this harm key to global transformation required ‘before collapse becomes inevitable’

The unsustainable production of food and fossil fuels causes $5bn (£3.8bn) of environmental damage per hour, according to a major UN report.

Ending this harm was a key part of the global transformation of governance, economics and finance required “before collapse becomes inevitable”, the experts said.

Tapanuli orangutans survive only in Indonesia’s Sumatran rainforest where a mine expansion will cut through their home. Yet the mining company says the alternative will be worse

A small brown line snakes its way through the rainforest in northern Sumatra, carving 300 metres through dense patches of meranti trees, oak and mahua. Picked up by satellites, the access road – though modest now – will soon extend 2km to connect with the Tor Ulu Ala pit, an expansion site of Indonesia’s Martabe mine. The road will help to unlock valuable deposits of gold, worth billions of dollars in today’s booming market. But such wealth could come at a steep cost to wildlife and biodiversity: the extinction of the world’s rarest ape, the Tapanuli orangutan.

The network of access roads planned for this swath of tropical rainforest will cut through habitat critical to the survival of the orangutans, scientists say. The Tapanuli (Pongo tapanuliensis), unique to Indonesia, was only discovered by scientists to be a separate species in 2017 – distinct from the Sumatran and Bornean apes. Today, there are fewer than 800 Tapanulis left in an area that covers as little as 2.5% of their historical range. All are found in Sumatra’s fragile Batang Toru ecosystem, bordered on its south-west flank by the Martabe mine, which began operations in 2012.

Cameras capture lone creature collecting materials for its lodge in riverside nature reserve

A wild beaver has been spotted in Norfolk for the first time since beavers were hunted to extinction in England at the beginning of the 16th century.

It was filmed dragging logs and establishing a lodge in a “perfect beaver habitat” on the River Wensum at Pensthorpe, a nature reserve near Fakenham in Norfolk.

Climate crisis and overfishing contributed to loss of 95% of penguins in two breeding colonies in South Africa, research finds

More than 60,000 penguins in colonies off the coast of South Africa have starved to death as a result of disappearing sardines, a new paper has found.

More than 95% of the African penguins in two of the most important breeding colonies, on Dassen Island and Robben Island, died between 2004 and 2012. The breeding penguins probably starved to death during the moulting period, according to the paper, which said the climate crisis and overfishing were driving declines.