Learn about the fatal encounters between two groups of killer whales, bringing the idea of whale cannibalism into question.

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 Bigg's orcas might be ...

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

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 ...

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

According to West Seattle Blog, the texter reported “three orcas in Elliott Bay, ‘way in next to container wharves’.” The ...

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

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 ...

In the North Pacific, orca fins with signs of cannibalism are washing up on a Russian beach. The findings suggest that killer whales occasionally participate in cannibalism, which might explain why ...

Orcas in Alaska's Prince William Sound and Kenai Fjords have a diverse, seasonally changing diet of salmon and groundfish, consumed across regional foraging hotspots. Photo courtesy of Shutterstock ...