These spiny or slimy ocean creatures display an astonishing diversity of appearances, behaviors and lifestyles—and many are ...

To survive the deep ocean, sea creatures need all kinds of adaptations that give them alien-like appearances, like huge eyes ...

During a night dive off a tropical island, we came face-to-face with some of the strangest sea creatures we’ve ever seen. In this video, we take you beneath the surface to explore the ocean after dark ...

In 1988, on the banks of the Puntledge River on Vancouver Island, a strange fossil began to emerge from the stone. It was ...

The deep sea begins at about 200 meters below sea level, where light starts to diminish in a region called the twilight zone.

Officials are issuing warnings for Portuguese man-of-war along a roughly 150-mile stretch from Cape Lookout in North Carolina ...

A picture of this odd animal that washed up in North Myrtle Beach, South Carolina sparked everything from lewd jokes to ...

Dive into one of the ocean’s most intriguing and mysterious phenomena, the Bloop. Recorded in the 1990s by NOAA, the Bloop is an ultra-low-frequency underwater sound that baffled scientists and ...

A prehistoric sea monster never-before-known to man was hunting prey in North America 85 million years ago, fossils found decades ago in Canada reveal.

The biggest stories of the day delivered to your inbox.

They also studied single-celled relatives that are not animals but share a recent common ancestor. "You can discover a lot of new biology by looking at weird sea creatures. So far, we had been ...