Southern Resident killer whales are a small and well-studied group of orcas that have long been seen as an isolated group without much outside connection. New research challenges that view, suggesting ...

There may be fewer than 170 false killer whales in the Hawaiian Archipelago, so every sighting is precious.

A rare group of endangered southern resident killer whales was spotted off Oregon’s central coast Monday, March 24, about three miles offshore near Cape Foulweather, just north of Depoe Bay. Observers ...

Orcas, or killer whales, are deadly and beautiful apex predators.

SEATTLE — The endangered killer whales of the Pacific Northwest live very different lives from orcas in captivity. They swim up to 100 miles (161 kilometers) a day in pursuit of salmon, instead of ...

Where there are Chinook salmon, the orcas will likely follow — including the mouth of the Columbia River. Despite what can feel like a desperate and futile effort to save the region’s venerated ...

While well documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in Australia. However, orcas are actually sighted year-round in all coastal ...

New research shows southern resident killer whales grooming each other using kelp they’ve modified, and researchers think it’s the first time researchers have documented marine mammals making tools.

The Spring Economic Update promised $252 million in whale conservation, but environmentalists warn that this funding may not ...