Dramatic footage shows several killer whales circling and feeding on a blue shark off Baja California Sur, Mexico. Wildlife ...

On March 6, three orcas showed up in Canada’s Vancouver Harbour, later heading south to Seattle, Tacoma and Olympia, that ...

On Oct. 24, 1931, William Fey cruised the Columbia Slough and found Oswald, the orca, floating. The frolicking orca called Ethelbert by Oregonians and Oswald by Washingtonians was harpooned by Edward ...

Blue whale calves enter the world already the size of a bus, yet they still face danger. A hungry killer whale sees a slow, ...

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

The world’s deadliest ambush predators are masters of stealth, camouflage, and sudden, lethal force, often attacking from ...

Two severed fins bearing the tooth marks of other killer whales have raised a troubling question: are some orcas hunting ...

Orcas don’t have any natural predators, so how did this happen? The tooth marks, it turned out, were distinctive – they were ...

Scientists found evidence that killer whales may hunt and eat other killer whales, revealing new insights into how ...

Hunting killer whales always eat the animals they kill, typically leaving behind only a few low-energy parts, such as fins. "Also, if it was just aggression, they wouldn't bother to tear off the fin," ...

When killer whales attacked a great white shark near South Australia’s Neptune Islands in 2015, the story spread quickly. After the attack, white sharks disappeared from the area for 69 days. Many ...