A humpback whale briefly engulfed a kayaker off the coast of Chile in an incident caught on camera. Experts say it couldn't have swallowed him even if it wanted to.

Undersea mountains are key locations for predators—with 41 times more sharks than the open ocean, new research shows.

There seems to be too much of a radioactive element in rocks deep in the Pacific Ocean – how did it get there 10 million ...