Killer whales have been seen detaching lengths of seaweed and using them to massage each other—the first evidence of tool-making by marine mammals. The whales bite off the end of a kelp stalk, ...

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

Orcas, also known as killer whales, are among the most well-studied marine mammals, captivating the public and scientists alike with their intelligence, strong social bonds and complex behaviors.

While orcas, also known as "killer whales," are a common sight in the northeast Pacific Ocean, they’re rarely detected in the ...

Rescuers rushed to save a group of false killer whales that stranded on a beach in Australia, photos show. Photo from Parks and Wildlife Service, Western Australia A rescue mission recently took place ...

Esther Jacobs smelled murder on the water. As the pungent odor of shark liver filled the air and an oily sheen spread across the surface, Jacobs had come upon an aquatic crime scene - and two ...

The latest survey of endangered southern resident killer whales confirms their plateau and gradual slide toward disappearance ...

A MARINE park has refused to send its beluga whales to a sanctuary after threatening to kill all 30 of them unless the ...

An orca was recently spotted swimming with a pod of dolphins off the coast of Massachusetts in a rare killer whale encounter caught on video. Donna Piraino, of the charter Go Girl Fish, was out ...

Killer whales trapped under ice in a remote Quebec village have reached safety. Jan. 10, 2013— -- The killer whales trapped under ice near a remote Quebec village reached safety today after the ...