Keto, a 29-year-old killer whale, called a chlorinated pool at a Spanish marine park home for nearly two decades. The ...

a killer whale teaches its baby how to hunt by headbutting a dolphin, causing it to flip several times in the air. "The orcas catch the dolphin, but let it go after it's subdued because it's not ...

A ferry captain captured the stunning moment a family of killer whales, or orcas, came within 10 feet of the boat in downtown Vancouver.

Two Southern Resident killer whales have successfully given birth since and are still alive, the Seattle Times said. According to research from the University of Washington, failures to reproduce ...

Researchers studying the Southern Resident killer say she is still carrying her baby, as of Wednesday. Killer whales have been known to carry dead calves for as long as a week, but scientists ...

A female orca appeared to have adopted or abducted a baby pilot whale in the first known case of its kind, scientists say. The orca, known as "Sædís," was first observed swimming with the pilot ...