Orcas appear in Vancouver Harbour from time to time and often delight residents who catch a glimpse of them. But marine experts say three whales spotted there last week are unlike any previously ...

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

Researchers come 'eye-to-eye with a killer whale' during their Antarctic expedition.

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

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

Orcas are among the ocean’s top predators, yet there is only one well-documented attack on a human in the wild: in 1972, a surfer was bitten – probably because he was mistaken for a seal – but ...

KILLER whales have broken into an all out cannibalistic civil war, scientists believe. Biologists have warned of an all-out ...

Fins washing up in the North Pacific suggest that orcas from one subspecies are snacking on other orcas, and researchers ...

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

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

Captured off the coast of San Diego, the astonishing video pictured above captures the moment that a dolphin is punched on the chin by a killer whale. The dolphin rises above the surface, but the orca ...