Pacific white-sided dolphins swim off the coast of British Columbia. Dolphins and porpoises in this region have been spotted swimming alongside a population of killer whales known as northern resident ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. It was an orca ...

In six years studying orcas off Chile’s coast, marine biologist Ana García-Cegarra had never witnessed anything like what she saw in May 2023. In the vast Pacific waters near Antofagasta, a killer ...

While orcas, also known as "killer whales," are a common sight in the northeast Pacific Ocean, they’re rarely detected in the ...

Killer whales have a grisly new technique for hunting juvenile great white sharks – and scientists caught it on camera.

The owner of a San Diego whale-watching company this week shared extraordinary footage showing Eastern Tropical Pacific killer whales preying on dolphins during recent visits from Mexico. The footage ...

A heartbreaking discovery off Lāna‘i this week. Researchers with Cascadia Research Collective found an endangered false ...

SEATTLE — The newest member in the J Pod of the Southern Resident killer whales, calf J62, has been confirmed as a female by the Center for Whale Research. A team was sent to Snug Harbor on Feb. 8 ...