Scientists say a group living in the Araguaia River, Brazil has been isolated from other varieties for more than two million years

Captured on film: dolphin bloodbath Japan tries to hide

Documentary team – including the man who trained Flipper – aims to stop the annual slaughter

Rhys Darby: It's Rhys Darby Night, Udderbelly, Edinburgh

The clue to one of this show's weaknesses is already in the title; it's homage time.

The Complete Guide To: Whale & dolphin watching

As a week devoted to these marvellous marine mammals begins, Harriet O'Brien explores the best places to encounter them in the wild

Navy exercises blamed over dead dolphins

Naval exercises could have contributed to the mass stranding of 26 dolphins on the Cornish coast a year ago, a scientific report found today.

Killer whales 'decimating harbour seal population'

The catastrophic decline of the common seal population in Scottish waters could be blamed partly on killer whales, marine biologists believe.

Stranded whales returned to sea

Ten long-finned pilot whales were returned to sea today after surviving a mass stranding on a remote southwest Australian beach and appeared to be swimming away after some initial disorientation, an official said.

Beached whales rescued in Australia

Rescuers used jet skis, excavators and human muscle to save dozens of whales and dolphins stranded on a beach in southern Australia today, officials said.

£500,000 fine for death vessel company

A national prosecutor has ordered a Norwegian firm to pay a 5m kroner fine - almost £500,000 - for a 2007 accident that killed eight people.

Swimming with humpbacks: the journey of life

A hunting ban has restored numbers of the humpback whale but scientists warn one-fifth of all mammals could soon die out.

Whales under threat of extinction

A quarter of whales, dolphins and porpoises are threatened with extinction, with one in 10 species endangered to the very highest levels, a study by conservationists will reveal today.

What does our financial future have to do with the price of fish? Everything, according to this Hastings boozer

The Dolphin Inn, 12 Rock-a-Nore Road, Hastings, East Sussex, tel: 01424 431 197

Rescuers fail to save sick whale

A sick whale had to be put down last night after it repeatedly beached itself on sandbanks.

The Big Question: What causes dolphins to swim to a point where they become stranded?

It appears that mass strandings are increasing, or are at least more widely reported

'Siren calls' tempt dolphins to their deaths

At least 21 dolphins died yesterday in the biggest mass stranding of marine animals in almost 30 years.

Tough new rules brought in to curb Scottish seal killings

As headless animals are found on a Skye beach, the government takes action to stop year-round slaughter
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Day In a Page

Burgundy, the River Rhone & Provence – MS Swiss Corona - seven nights from £999pp
Lake Maggiore, Orta and the Matterhorn – seven nights from £899pp
Sicily – seven nights from £939pp
Pompeii, Capri and the Bay of Naples - seven nights from £799pp
Istanbul Ephesus & Troy – six nights from £859pp
Mary Rose – two nights from £319pp
Middle East crisis: We know all too much about the cruelty of Isis – but all too little about who they are

We know all too much about the cruelty of Isis – but all too little about who they are

Now Obama has seen the next US reporter to be threatened with beheading, will he blink, asks Robert Fisk
Neanderthals lived alongside humans for centuries, latest study shows

Final resting place of our Neanderthal neighbours revealed

Bones dated to 40,000 years ago show species may have died out in Belgium species co-existed
Scottish independence: The new Scots who hold fate of the UK in their hands

The new Scots who hold fate of the UK in their hands

Scotland’s immigrants are as passionate about the future of their adopted nation as anyone else
Britain's ugliest buildings: Which monstrosities should be nominated for the Dead Prize?

Blight club: Britain's ugliest buildings

Following the architect Cameron Sinclair's introduction of the Dead Prize, an award for ugly buildings, John Rentoul reflects on some of the biggest blots on the UK landscape
eBay's enduring appeal: Online auction site is still the UK's most popular e-commerce retailer

eBay's enduring appeal

The online auction site is still the UK's most popular e-commerce site
Culture Minister Ed Vaizey: ‘lack of ethnic minority and black faces on TV is weird’

'Lack of ethnic minority and black faces on TV is weird'

Culture Minister Ed Vaizey calls for immediate action to address the problem
Artist Olafur Eliasson's latest large-scale works are inspired by the paintings of JMW Turner

Magic circles: Artist Olafur Eliasson

Eliasson's works will go alongside a new exhibition of JMW Turner at Tate Britain. He tells Jay Merrick why the paintings of his hero are ripe for reinvention
Josephine Dickinson: 'A cochlear implant helped me to discover a new world of sound'

Josephine Dickinson: 'How I discovered a new world of sound'

After going deaf as a child, musician and poet Josephine Dickinson made do with a hearing aid for five decades. Then she had a cochlear implant - and everything changed
Greggs Google fail: Was the bakery's response to its logo mishap a stroke of marketing genius?

Greggs gives lesson in crisis management

After a mishap with their logo, high street staple Greggs went viral this week. But, as Simon Usborne discovers, their social media response was anything but half baked
Matthew McConaughey has been singing the praises of bumbags (shame he doesn't know how to wear one)

Matthew McConaughey sings the praises of bumbags

Shame he doesn't know how to wear one. Harriet Walker explains the dos and don'ts of fanny packs
7 best quadcopters and drones

Flying fun: 7 best quadcopters and drones

From state of the art devices with stabilised cameras to mini gadgets that can soar around the home, we take some flying objects for a spin
Joey Barton: ‘I’ve been guilty of getting a bit irate’

Joey Barton: ‘I’ve been guilty of getting a bit irate’

The midfielder returned to the Premier League after two years last weekend. The controversial character had much to discuss after his first game back
Andy Murray: I quit while I’m ahead too often

Andy Murray: I quit while I’m ahead too often

British No 1 knows his consistency as well as his fitness needs working on as he prepares for the US Open after a ‘very, very up and down’ year
Ferguson: In the heartlands of America, a descent into madness

A descent into madness in America's heartlands

David Usborne arrived in Ferguson, Missouri to be greeted by a scene more redolent of Gaza and Afghanistan
BBC’s filming of raid at Sir Cliff’s home ‘may be result of corruption’

BBC faces corruption allegation over its Sir Cliff police raid coverage

Reporter’s relationship with police under scrutiny as DG is summoned by MPs to explain extensive live broadcast of swoop on singer’s home