This article originally published at 'Mass die off': Thousands of rare sea creatures wash up on Texas coast.

Far below the ocean’s surface, where sunlight disappears and pressure reaches crushing levels, some of the planet’s strangest ...

The Trump administration wants to make economic impacts a factor in what was previously a science-based decision on what's ...

Killing the protected animals may be the only way to stop them from eating too many of the Pacific Northwest’s endangered ...

Few have explored the ocean’s deepest depths – but those rare few have shared images of the strangest, most mysterious ...

Along long stretches of the Texas shoreline, thousands of rare sea creatures have been turning up dead or dying, transforming ...

Like a scene out of a Jules Verne novel, scientists from Schmidt Ocean Institute recently encountered a giant phantom jelly ...

Animals that researchers call “supersucklers” come back to nurse even after they can hunt, mate and fend for themselves.

Ted Judah went diving off McAbee Beach in Monterey Bay when he caught sight of a 'silvery knife blade undulating thing,' ...

A bright green sea slug along America’s coast feeds on sunlight, not food, borrowing plant power to survive months unfed, ...

Thirty-three North Atlantic right whales were seen in Cape Cod Bay during an aerial survey conducted on Saturday, Jan. 10, ...

A wildlife photographer has captured what are believed to be the first underwater images of the rare, elusive Ross seal.