Glowing sea animals use a chemical process called bioluminescence for crucial life functions, including communication, attracting prey, or defense. The ocean is home to a host of glowing creatures, ...

Contentedly full from its last meal, a mysterious sea creature swam through the royal blue depths off the coast of Costa Rica. Twirling and spiraling, the misshapen animal moved in a mesmerizing way.

These creatures look like they’ve come straight out of a nightmare. Humans have explored much of the land, but the ocean depths remain largely unknown. What we do know, however, is that some of the ...

The deep sea is filled with all manner of weird and wonderful creatures. Among them is a bizarre eel species with a giant mouth that has a remarkable resemblance to a pelican's beak. Dubbed the ...

Scientists saw a mysterious deep sea animal, still misshapen from its last meal, swimming off the coast of Costa Rica, a first-of-its-kind video shows. Screengrab from the Schmidt Ocean Institute's ...