A large gray serpent-like eel with a large lump in its stomach swims through the dark ocean. Ocean explorers recently stumbled upon an extremely unusual sight in the Pacific's deep sea — a rare, ...

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.

Anybody who’s ever seen a Blue Planet documentary, or pretty much any other nature show narrated by Sir David Attenborough, knows that the depths of the ocean are jam-packed with nightmarish creatures ...

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 ...