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.

Sixty orcas were filmed killing a 59-foot pygmy blue whale in Bremer Canyon off the coast of Western Australia on April 7. The brutal footage shows the pod of killer whales living up to their name, ...

White-sided dolphins seem to help killer whales "scout" and catch Chinook salmon near Vancouver Island, then eat the ...