The owner of a San Diego-based whale-watching business on Friday shared a video clip showing an orca lunging after an elusive dolphin during an “amazing game of cat and mouse.” But Domenic Biagini ...

Pacific white-sided dolphins swim off the coast of British Columbia. Dolphins and porpoises in this region have been spotted swimming alongside a population of killer whales known as northern resident ...

Orcas have gobbled up news headlines this past year due to numerous reports of these killer whales harassing — and at times even sinking — boats, sparking countless memes and befuddlement. When they ...

In a rare video captured by a whale watching expedition off the coast of San Diego this week, a killer whale teaches its baby how to hunt by headbutting a dolphin, causing it to flip several times in ...

Killer whales in northern Mexico are in the spotlight after scientists documented them devouring the livers of young great ...

A Pacific white-sided dolphin who shared a tank with Lolita the orca at the Miami Seaquarium until Lolita died last month has been moved to SeaWorld San Antonio, where he will live with others of his ...

When flipped upside-down, the sharks fall into an involuntary trance, leaving them easy victims for the orcas. Why the sharks ...

Li’i, a Pacific white-sided dolphin that was Lolita’s companion at Miami Seaquarium until her death last month, was moved Sunday night to SeaWorld San Antonio, where he will be reunited with two ...