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

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

This stingray gets knocked out cold by an orca tail slap - take a look and read our analysis of orca hunting behavior.

Historically, killer whale diet research relied on surface sampling of prey fragments, usually scales, helping researchers to determine primarily salmon species. Newer techniques that analyze DNA in ...

, March 10 -- Scientists have found possible evidence suggesting that some killer whales may hunt and eat their own species in waters near Russia.

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

It’s long been thought that the Southern Resident orcas that live in our region have no predators, but a new article in Live Science suggests that non-resident orcas, or Bigg’s orcas, might be eating ...

The discovery came as a surprise, because the two species usually prefer to avoid each other and keep a safe distance.

Detached orca fins scored with distinctive tooth marks suggest that killer whale cannibalism is happening — and it might ...

Editor’s note: We’ll bite. Folks, why should we bother saving orca whales? Kids, you, too. Send your letters with your name, address and phone number to letters@heraldnet.com. Letters of 250 words or ...

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