Many otherworldly deep-sea creatures, though, are so beautiful and mysterious that you won't believe they exist. Even in the ...

What exactly is this unusual blue sea creature? Get to know one of the more unusual members of the sea slug family in our quick look.

A “beautiful” mama sea creature was spotted alongside her baby off the coast of California. On Feb. 27, a northern right whale dolphin was seen swimming in unison with her calf, according to a ...

On closer inspection, it turned out to be a tiny sea creature with feather-like hands and legs, with a pointy tail. The beautiful creature is easy on the eye, but the incredible find comes with a ...

Hydrophiinae The Pacific Ocean’s sea snakes, also known as coral reef snakes, are long and colorful. They are one of the ...