Researchers identified two ecologically distinct communities of transient killer whales along the West Coast, each with unique hunting behaviors, habitats, and social networks.

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer ...

A study reveals that certain West Coast orcas belong to distinct social groups with different habits and diets. NPR's Scott Simon speaks with ecologist Josh McInnes about how the groups differ.

SEATTLE – A new baby orca born to J Pod is a ray of hope for the endangered southern resident killer whales. J63 was spotted by Mark Malleson, field biologist for the Center for Whale Research, on ...

A new baby orca born to J Pod is a ray of hope for the endangered southern resident killer whales. J63 was spotted by Mark Malleson, field biologist for the Center for Whale Research, on April 6. J ...

Killer whales, or orcas, are the ocean's top predator and have the most varied diet of all cetaceans. Orcas have been detected off the North Carolina coast via underwater hydrophones, but sightings ...

Rescuers rushed to save a group of false killer whales that stranded on a beach in Australia, photos show. Photo from Parks and Wildlife Service, Western Australia A rescue mission recently took place ...

Attempts to 'refloat' the whales have failed due to poor weather A huge group of false killer whales are expected to be euthanized after being stranded on a beach on Tasmania's coast. On Tuesday, Feb.