Twenty years ago, researchers saw what they called a "mystery mollusc." Now, they've finally described it in detail... but they're keeping the name.

The vast array of organisms in the deep sea remains a mystery to humans. Now, marine biologists can add one more puzzle to the list. A collection of odd materials was discovered nearly four miles ...

Two new species have been discovered swimming off the coast of Western Australia and, like all deep-sea beasties, they are pretty unusual. Say hello to a brand new species of lanternshark that glows ...

When most of us picture the ocean, we imagine turquoise waves, colorful reefs, and shoals of darting fish. But that’s only the surface. Venture deeper, far below the last reach of sunlight, and you ...

It looked like a shadow at first — but after several minutes, a rare species of deep-sea shark had swum by an underwater camera 54 times, delighting researchers. The Miami Herald reported on the ...

HOUSTON, Texas (KTRK) -- We have a pup-date on the Houston Zoo's baby sea lion! He finally has a name and is learning to swim. VIDEO: Houston Zoo's sea lion pup learns to swim The 5-week-old male ...

Is it downright adorable, or is it so ugly it's cute? Either way, this newly discovered pink fish has the makings to survive in one of the darkest, coldest places on earth, and its pink, bumpy face is ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

If you happened upon this bizarre creature in the ocean, you could be forgiven for thinking someone had flung a chicken carcass into the sea and it was bobbing along on the current — hence its ...

"It's suspected that they use bioluminescence to communicate with each other." This is an Inside Science story. Forget the white whale -- some of the most rarely seen albinos on the planet are ...

For an animal, surviving in the ocean’s deepest trenches requires remarkable adaptations: a gelatinous body that can withstand pressure, bioluminescent features to guide it, and a transparent ...

Feeling the weight of the world, a writer embarks on a mission: She would immerse herself in a different body of water every ...