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

Anya Stajner, a PhD candidate at Scripps Institution of Oceanography, urges beachgoers to exercise caution when touching or ...

Unique creatures, odd animals and new species are discovered across the planet. Some are found lurking in remote corners of the world, while others have been hiding right under our noses. Learn more ...

the underwater caves known as blue holes stretch for hundreds of miles in all directions. Today, these labyrinthine passages host a variety of tiny sea creatures found nowhere else on the planet.

An unusual sea creature washed up on a Miami beach ... Despite it's charming appearance, the blue glaucus - or Blue Dragon as it's more commonly known - has a powerful, venomous sting.

While this blue sea creature appears to be writhing in pain, it’s actually just moving around. The cerata, or feather-like protrusions from the body, move easily and gracefully.