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.

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

When they're wearing salmon hats and terrorizing yachts, it's easy, perhaps, to forget that orcas are the most fearsome large predator lurking beneath the waves. Here comes a sobering reminder. A pod ...

Despite their reputation as 'killer' whales, orcas are known to lend a helping fin by sharing their food with humans. A recent study recorded and analyzed 34 instances of prey-sharing by orcas ...

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): ...

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

Orcas (Orcinus orca) might be even more ferocious predators than we give them credit for. Scientists have discovered orcas that have learned to hunt whale sharks (Rhincodon typus), the largest fish in ...

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 ...

Footage captures a pair of orcas nibbling each other's tongues in the Kvænangen fjords in northern Norway. Scientists think this rarely seen behavior could play a role in social bonding. When you ...