Researchers identified two ecologically distinct communities of transient killer whales along the West Coast, each with unique hunting behaviors, habitats, and social networks.

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer ...

New research on the eastern North Pacific has revealed that the mammal-eating killer whales off the West Coast are not a single roaming population but two socially distinct communities that rarely, if ...

Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

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.

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of marine mammals making their ...

A U.S.-based research team has documented a rare glimpse of Bigg's killer whales engaging in some unusual behaviour, ...

Inner coast transient killer whale hunting close to a Steller sea lion haulout off the outer coast of Washington. New research has confirmed that West Coast transient killer whales who live between ...

The federal government has failed to give adequate information on deaths of killer whales and other marine mammals that become entangled in commercial trawling gear in Alaska waters, claims a lawsuit ...

On Nov. 2, Orca Channel, a tour company that researches and captures media of Arctic wildlife, shared in a Facebook post that ...

SEATTLE — A pod of orcas swam close to shore and amazed onlookers in Seattle by treating the whale watchers to the rare sight of the apex predators hunting a bird. The pod of Bigg’s killer whales ...

A rare pygmy killer whale was found dead on the coast of Odisha's Bhadrak district, officials said on Sunday. The whale was ...