Ocean depths hide sharks with extraordinary features. These creatures, from the Goblin shark's snout to the Thresher shark's ...

This is not The Deep Blue Sea sequel. It's stuff people said they have seen underwater and I'm outta here.

A new study reveals an unknown species of whiplash squid burying itself upside down in the deep sea — a first-of-its-kind ...

Evolution keeps repeating itself, and somehow, it always ends up with crabs. Scientists are finally explaining why.

Almost a half-mile below Monterey Bay's surface, California scientists recorded rare footage of a seven-arm octopus eating a ...