Orcas, or killer whales, are deadly and beautiful apex predators.

Researchers come 'eye-to-eye with a killer whale' during their Antarctic expedition.

I am a Southern Resident orca, and I think it is time to explain some things.

A B.C. conservation group says it is concerned salmon returns will continue to decline as the federal government cuts funding for local habitat restoration workers.

Dramatic landscapes and rich biodiversity characterize Alaska’s unique environment. Alaska is the only US state with ...

Three orcas turned Seattle’s working waterfront into a whale‑watching hot spot Monday morning, cruising deep into Elliott Bay ...

Tourists were stunned when a pair of orcas tried to hunt a gentoo penguin alongside their ship. Here’s what happened next.

Common names for animals are often easier to remember than their Latin names, but they can often lead to confusion. Here are ...

Discover how human whalers and killer whales teamed up to hunt on the Australian coast in what is known as the Law of the Tongue.

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

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called resident orcas, stay in such large family groups ...