Orcas don’t have any natural predators, so how did this happen? The tooth marks, it turned out, were distinctive – they were ...

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 ...

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 ...

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 ...

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

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

A study in 2018 revealed that some orcas are able to imitate human speech, mirroring words such as 'Amy', 'Hello' and 'Bye ...

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.