Although known as "killer whales," orcas are actually the largest ... these three orca groups share few behavioral adaptations. A little known fourth group, the offshores, also shares some of ...

The sighting of a baby killer whale in British Columbia has given researchers a sign of hope for the endangered species, ...

A killer whale has become a first-time mom after a peachy-orange calf was spotted swimming with her off Washington, a whale watching group said. The baby orca was discovered March 20 in the Salish ...

A Bigg’s killer whale calf is seen swimming alongside its mom in the Salish Sea off Washington. Caio Ribeiro Eagle Wing Tours / Pacific Whale Watch Association A killer whale has become a first ...