Researchers using a new drone say they have observed killer whales finding and modifying stalks of kelp to preen each other.

Exploration for deep-sea minerals in the Clarion Clipperton Zone threatens to disrupt an unexpectedly rich ecosystem of whales and dolphins. New studies have detected endangered species in the area ...

The more we learn about orcas, the more remarkable they are. These giant dolphins are the oceans true apex predator, preying ...