Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something other than hunting prey.

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

The population of Bigg’s killer whales — which is believed to be in the hundreds — has grown since the government stopped ...

A 13-day survey conducted in the Clarion-Clipperton Zone (CCZ) found a large variety of marine life living in the region, ...

Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans.

Researchers have identified a fascinating behavior in killer whales, aka orcas: they sometimes offer to share their prey with ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something other than hunting prey.

They found that the southern resident orcas — a distinct population of killer whales — were detaching strands of bull kelp from the seafloor to roll between their bodies in a behavior the ...