A freediver and green sea turtle swam beside each other with their arms and flippers paddling in sync. Footage shows the swimmer gliding underwater with the friendly endangered marine creature in Cebu ...

5,000 new species have been found in an area of the Pacific Ocean called the Clarion-Clipperton Zone. SMARTEX Project/ NERC These weird and wonderful creatures include worms, corals and sea ...

See the amazing world of underwater creatures and their special homes. This video shows how these animals live and adapt in ...

An unusual sea slug with a large hood, a tail with fingerlike projections and glowing bioluminescence has been found living ...

Deep-sea researchers have discovered a strange glowing sea slug off the coast of California that lives in the water column — ...

University of Oxford professor Tim Coulson told London-based business publication The European that the octopus is one of the ...

Researchers were baffled by a bioluminescent mollusk that lives in the deep ocean. They just discovered it's a new species of ...

When El Niño developed in 2016, warming up the Pacific Ocean, it killed off a third of the corals of the Great Barrier Reef.

A solitary bottlenose dolphin in the Baltic Sea has grown so lonely and devoid of companions that it may have started ...