SeaWorld's beloved Katina has died. The water park has released the cause of death for the killer whale, who was believed to ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

Off the Pacific coast of Canada, scientists have captured something that challenges long‑held assumptions about life in the ...

A pod of Pacific white-sided dolphins off the coast of British Columbia have been observed cooperating with orcas, a traditional enemy that’s better known for taking out great white sharks than ...

Learn how differences in diet and behavior split orcas off northern Japan into resident and transient groups — and what their ...

Scientists know a surprising amount of information about Southern Resident Killer Whales, but once the whales leave their ...

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.

Park has no plans to euthanize killer whale linked to deaths of 3 people. Feb. 25, 2010— -- SeaWorld has no plans to euthanize the killer whale that dragged a trainer to her death Wednesday, and ...

Learn why killer whales sometimes wear dead salmon on their heads, and what that might mean.

The species Orcinus orca, generally known as orcas or killer whales, is made up of many genetically distinct populations ...