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 ...

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

Ecotypes of killer whales around Hokkaido. The red regions in the top left map show the sea areas where we can frequently see killer whales. Kyoto, Japan -- The species Orcinus orca, generally known ...

A new species of killer whale has been discovered off the southern coast of Chile. Researchers from San Diego's Scripps Institution of Oceanography say the whales look distinctly different than orcas.

New Canadian-led research into northern resident killer whales suggests even when food is plentiful, orca moms struggle to ...

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

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

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, ...