Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like killing and tossing dead porpoises in the air ...

These animals demonstrate that menopause is not just a human experience but a fascinating aspect of life for various species ...

Killer whales have large, complex brains. They teach hunting techniques to their young, adapt to new prey, and communicate using unique dialects within their pods. Recent incidents show orcas ...

An orca calf less than 24 hours old has been spotted in a rare sighting of a newborn killer whale in Western Australia. The animals are regularly seen off Bremer Bay in summer, but calves are ...

A pod of killer whales made an unexpected visit off the coast of Orange County Thursday. The pod of CA56 killer whales (orcas) was spotted by a Davey’s Locker whale-watching boat about 12:30 p.m ...

A Pygmy killer whale — rarely seen in the shallow waters that surround the Florida Keys — was found injured, sick and stranded just off a beach in the island chain on Sunday, a local marine ...

Australian water camera operator Andre Rerekura filming a young male false killer whale off the coast of Northland. Photo / BBC Fascinating footage of New Zealand’s unique marine mammals ...