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

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

Orcas don’t have any natural predators, so how did this happen? The tooth marks, it turned out, were distinctive – they were from an orca. The DNA analysis of the fins that fo ...

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 ...

In 2022, a Russian whale researcher made a remarkable discovery on Bering Island off Russia's Pacific coast: a severed killer ...

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

Add Yahoo as a preferred source to see more of our stories on Google. Researchers discovered that Northern resident killer whales hunt by going silent and eavesdropping on dolphin echolocation to ...

A long-term study shows southern Alaska killer whales switch between salmon species and also eat groundfish as seasons and ...

A federal judge has awarded an environmental group more than $1.6 million for prevailing in a lawsuit against Endangered Species Act regulations for killer whales. In 2020, the Wild Fish Conservancy ...

A long-term study using DNA from whale scat has revealed surprising complexity in the diets of southern Alaska’s fish-eating killer whales.