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

Whales observed in Salish Sea off western North America Behavior is a rare instance of tool use by marine mammals It may promote skin health and strengthen social bonds June 24 (Reuters) - Killer ...

A pod of orcas swam close to shore and amazed onlookers in Seattle by treating the whale watchers to the rare sight of the apex predators hunting a bird. And the unusual spectacle was all caught on ...

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer coastal habitats. Inner-coast whales hunt smaller prey in shallow, ...

Traditionally, "resident" orcas have lived in the Salish Sea. They're the orcas we associate with the waters around Seattle. But another variety, "transient" orcas, have generally hung out along the ...

The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Kelsey Williamson Orcas — also known as killer whales — are once again on the ...

An orca who made headlines in 2018 after she carried her dead calf for more than two weeks was again spotted carrying the body of her newborn, just days after researchers confirmed she'd given birth.

More than 150 years ago, a San Francisco whaler noticed something about killer whales that scientists may be about to formally recognize — at least in name. Charles Melville Scammon submitted a ...