Two dolphins found dead on banks of Thames in London

One dolphin was discovered near Chelsea Harbour Pier, the other on the riverbank at Greenwich

Two dolphins have reportedly been found dead on the banks of the Thames in London, after one was spotted in the river last week.

The common dolphin was seen multiple times from late morning on Thursday, and was described as appearing to be “struggling with the tide”.

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Charity appeals for people to stay away from dolphin in Thames

Rescue body says dolphin spotted on Thursday may be further disoriented by human interference

People have been urged to stay away from a dolphin spotted in the River Thames.

The common dolphin had been seen several times near Putney Bridge, south-west London, on Thursday, and had appeared to be “struggling with the tide”, but had not been seen since.

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Australian government ‘deeply disappointed’ by Japan’s decision to expand commercial whaling target list

Japanese government confirms it will allow whalers to catch and kill up to 59 fin whales, a species conservationists consider vulnerable

The Australian government is “deeply disappointed” by Japan’s decision to add the world’s second-largest whale species to the list of species its commercial whale hunters will target.

Tanya Plibersek, the environment minister, attacked Japan’s decision to hunt fin whales – the world’s second-longest whale and considered vulnerable.

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Wildlife enthusiasts called on to help record dolphins and whales on UK coast

National Whale and Dolphin Watch organisers say data collected will help with research into marine mammals

Hundreds of wildlife enthusiasts are expected to gather along UK coastlines over the next 10 days to count and record whales and dolphins.

The National Whale and Dolphin Watch, taking place from 26 July to 4 August, is hosted by the Sea Watch Foundation and aims to get volunteers to observe and record sightings of the UK’s most impressive marine mammals.

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Large pod of pilot whales almost wiped out after stranding on Orkney beach

Rescuers including vets rush to save 12 survivors from 77-strong group lying on Sanday shore

Dozens of long-finned pilot whales have died after a 77-strong pod came ashore on an Orkney beach in what could be the biggest mass stranding in decades.

Twelve of the animals at Tresness beach, on the island of Sanday, were still alive, but according to rescuers from the British Divers Marine Life Rescue (BDMLR), it was thought unlikely they could be saved.

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Native American tribe wins right to hunt gray whales off Washington coast

Makah people, whose right to hunt whales is noted in treaty, granted waiver by US government to kill two or three a year

After facing decades of legal and bureaucratic hurdles, the Makah Tribe in Washington has won approval from the US to resume whale hunting for the first time in 25 years.

The National Oceanic and Atmospheric Administration (Noaa) Fisheries announced on Wednesday that it would grant the tribe a waiver, allowing the Makah “a limited subsistence and ceremonial hunt” under an 1855 treaty. The Makah will be permitted to hunt up to 25 eastern North Pacific gray whales over 10 years.

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Iceland grants country’s last whaling company licence to hunt 128 fin whales

Conservationists criticise ‘disappointing’ and ‘dangerous’ move to allow harpooning of fin whales after curbs last year

Iceland has granted a licence to Europe’s last whaling company to kill more than 100 animals this year, despite hopes the practice might have been halted after concerns about cruelty led to a temporary suspension last year.

Animal rights groups described the news as “deeply disappointing” and “dangerous”.

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Low-flying drones could disrupt whale migration off Australia’s east coast, experts warn

In high-density places such as Sydney many drones may hover over an animal at once, amplifying disturbance pressure

As whales migrate up Australia’s east coast in the coming months, drones are hot on their tails. But experts are warning that low-flying drones seeking a viral shot can disrupt the whales’ migration patterns and may even place their mating season at risk.

Grace Russell, a PhD candidate at Southern Cross University who studies marine mammals with drones, said whales had been known to exhibit disturbance behaviours when drones were flown near them at low altitudes.

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‘Free Bella’: campaigners fight to save lonely beluga whale from Seoul mall

Five years after her last companion died and the aquarium’s owner pledged to free her, Bella still languishes in a tiny tank amid shops

In the heart of Seoul, amid the luxury shops at the foot of the world’s sixth-tallest skyscraper, a lone beluga whale named Bella swims aimlessly in a tiny, lifeless tank, where she has been trapped for a decade.

Her plight is urgent, with campaigners racing to rescue her from the bare tank in a glitzy shopping centre in South Korea’s capital before it is too late.

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Orca calf successfully returned to open water after bold rescue in Canada

Two-year-old calf one step closer to reuniting with family group after tragic accident that left her stranded in remote lagoon

An orca calf, trapped for weeks in a remote lagoon in western Canada, has freed herself and is travelling towards open waters, hailed as “incredible news” by a growing body of human supporters.

The move puts her one step closer to reuniting with her family one month after a tragic accident left her stranded.

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Twenty-six pilot whales dead after mass stranding on WA beach

Up to 160 whales have beached themselves at Toby Inlet near Dunsborough, more than 250km south of Perth

Authorities are rushing to save more than 150 whales from a mass stranding at a beach in Western Australia’s south-west. Four pods have spread across roughly 500 metres at Toby Inlet near Dunsborough and 26 of these have died, Parks and Wildlife Service Western Australia confirmed.

“There are 20 whales in a pod about 1.5km offshore. Another pod of about 110 animals are together closer offshore,” a spokesperson said.

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Rope-entangled right whale spotted off coast of New England

The marine mammals are increasingly endangered as warmer waters push them into ship traffic and fishing gear

A North Atlantic right whale has been spotted entangled in rope off New England, worsening an already devastating year for the vanishing animals, federal authorities said.

Right whales number less than 360 and are vulnerable to entanglement in fishing gear and collisions with ships. The entangled whale was seen on Wednesday about 50 miles (80km) south of Rhode Island’s Block Island, the National Oceanic and Atmospheric Administration (NOAA) said.

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Orca stranded off Canada’s west coast dies despite efforts to save her

Residents and marine officials in British Columbia hope a changing tide will save her orphaned calf

A killer whale stranded off Canada’s west coast has died despite efforts to rescue her, but residents and marine officials hope a changing tide will save her orphaned calf.

On Saturday, members of the Ehattisaht First Nation, a coastal community along the north-western reaches of Vancouver Island, spotted an orca trapped on a rocky outcropping.

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Scientists find skull of enormous ancient dolphin in Amazon

Fossil of giant river dolphin found in Peru, whose closest living relation is in South Asia, gives clues to future extinction threats

Scientists have discovered the fossilised skull of a giant river dolphin, from a species thought to have fled the ocean and sought refuge in Peru’s Amazonian rivers 16m years ago. The extinct species would have measured up to 3.5 metres long, making it the largest river dolphin ever found.

The discovery of this new species, Pebanista yacuruna, highlights the looming risks to the world’s remaining river dolphins, all of which face similar extinction threats in the next 20 to 40 years, according to the lead author of new research published in Science Advances today. Aldo Benites-Palomino said it belonged to the Platanistoidea family of dolphins commonly found in oceans between 24m and 16m years ago.

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Gray whale sighted off New England 200 years after species’ Atlantic extinction

Scientists confirm cetacean’s presence but cite impact of climate change which has made North-west Passage ice-free in summer

Scientists have confirmed the presence of a whale off New England that went extinct in the Atlantic Ocean two centuries ago – an exciting discovery, but one they said that illustrates the impact of climate change on sea life.

Researchers with the New England Aquarium in Boston found the gray whale while flying 30 miles south of Nantucket, Massachusetts, on 1 March. The whale, which can weigh 60,000 pounds (27,215kg), typically lives in the northern Pacific Ocean.

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Single orca seen killing great white shark off South African coast

Attack on juvenile is thought to be first known time a lone orca has hunted down a great white

It is a smash and grab that has stunned scientists: in less than two minutes, a killer whale attacked and consumed a great white shark before swimming off with the victim’s liver in its mouth.

Experts say the event off the coast of Mossel Bay in South Africa offers new insights into the predatory behaviour of orcas.

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Killer whales trapped in drift ice off Japan’s Hokkaido coast escape

Pod of orcas in north Japan freed themselves as gaps between the ice grew, officials say

A pod of killer whales trapped by drift ice off the coast of Hokkaido, Japan’s northernmost main island, have apparently safely escaped, officials have said.

The orcas were initially spotted by a fisher who reported them to officials in the town of Rausu, on the north-east coast of Hokkaido, on Tuesday morning.

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California dazzled by ‘extremely rare’ killer whale sightings off southern coast

A group of 10 orcas has been seen leaping into the air to catch prey, delighting watchers and experts for the past two weeks

Experts and whale watchers have been dazzled by a series of orca sightings off the southern California coast that are being described as “extremely rare”.

A group of 10 whales – including a calf just a few months old – has been spotted for the past two weeks off the coast of southern California, between Oxnard and San Diego. Images from social media show the giant creatures leaping into the air to catch dolphins and coming within feet of boats full of eager viewers.

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Scores of dead whales found on Tasmanian beach in ‘confronting scenes’

Cause of mass stranding of 34 pilot whales on Freycinet Peninsula unclear as authorities say they are unable to remove carcasses

Thirty-four whales were found washed up across a beach on Tasmania’s east coast on Tuesday in what was described as a “confronting” and “devastating” scene.

While out training on a boat, local guide Chris Theobald came across an “overnight mass stranding” of more than 30 pilot whales at Bryans beach near the southern end of the Freycinet Peninsula.

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Bolsonaro under investigation for ‘harassing’ humpback whale

Man resembling Brazilian ex-president seemingly spotted on a jetski about 15 metres from distressed mammal

Federal police are investigating Brazil’s former president, Jair Bolsonaro, for yet another suspected misdeed: “harassing” a humpback whale while taking a public holiday spin on his jetski.

Bolsonaro’s anti-environmental policies earned him the nickname “Captain Chainsaw” during a four-year administration characterised by soaring destruction of the Amazon. But the far-right ex-president’s latest suspected environmental offence reportedly occurred in the waters off Brazil’s south-eastern coastline near the town of São Sebastião.

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