Orca fins washing up in the North Pacific are scratched with characteristic tooth marks that suggest killer whales are occasionally cannibals. Scientists say this may explain why some orcas live in ...

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

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

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

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, according to a recently published study in the journal Ecosphere. The types of ...

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