The species Orcinus orca, generally known as orcas or killer whales, is made up of many genetically distinct populations ...

New footage shows orcas and dolphins coordinating hunts, hinting at interspecies teamwork to track and catch salmon off ...

Across the world’s oceans, killer whales share the same striking black‑and‑white look yet live radically different lives.

Offshore Morin, P. A., R. G. Leduc, et al. (2006). "Genetic analysis of killer whale (Orcinus orca) historical bone and tooth samples to identify western U.S. ecotypes." Marine Mammal Science 22 (4): ...

Scientists know a surprising amount of information about Southern Resident Killer Whales, but once the whales leave their ...

Off the coast of British Columbia, dolphins lead killer whales to salmon and earn their share of lunch, a new study reveals. A new study is the first to document cooperative hunting between orcas and ...

We could all use a buddy to help us track down dinner from time to time. Sarah Fortune, a marine ecologist at Dalhousie University in Nova Scotia, and her colleagues used drones and camera-equipped ...

When three killer whales struck the Lady L, Heath Samples thought a tanker had collided with his yacht, as everyone on board was knocked off their feet. After the orcas repeatedly buffeted the yacht, ...

The 50-year-old orca had been at SeaWorld Orlando for 40 years and was one of just five killer whales at the park.

SeaWorld has announced the death of its famed killer whale, Katina. "Katina was 50 years old, and her health had begun to ...