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

In a moment that has thrilled birdwatchers and conservationists alike, researchers have spotted a small group of red-breasted ...

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

Its injuries were substantial. Experts stunned after finding rare creature in heartbreaking predicament: 'Significant and ...

A diver spotted a rare creature just 15 feet below the surface, even though these animals typically live much deeper. See it ...

The ocean is home to some of the most mysterious creatures on Earth. Many of us are familiar with the common sea animals like dolphins, sharks, and turtles, but there are also rare and unusual ...

A pair of sea creatures was spotted off the coast of California, and boaters are calling it an “incredible sighting,” a whale-watching company said. Two sperm whales were spotted around 5.5 miles off ...

If you see something in the water along the shoreline of the Gulf of Mexico that sorta resembles your favorite state fair treat … it’s best not to, well, attempt to eat it. Because they’re called pink ...

Spurilla neapolitana was spotted in the United Kingdom waters for the first time. (Charlotte Cumming via SWNS) By Lauren Beavis A "groundbreaking" sea slug discovery has been made - in a UK first. The ...

Two sea creatures were spotted together off the coast of California, boaters said. Getty Images/iStockphoto A pair of sea creatures was spotted off the coast of California, and boaters are calling it ...