WARNING, GRAPHIC CONTENT: The footage shows several orcas taking turns with the carcass, highlighting their cooperative ...

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

On March 6, three orcas showed up in Canada’s Vancouver Harbour, later heading south to Seattle, Tacoma and Olympia, that ...

Scientists have recorded the wild orcas engaging in "tongue-nibbling" — a social behavior similar to "making out" or French kissing — for the first time ever. Details on the documentation of this rare ...

Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly ...

Two groups of killer whales are engaging in a terrifying, bloody cannibalistic war beneath the ocean’s surface, where gangs ...

Orcas, or killer whales, are deadly and beautiful apex predators.

The orcas are at it again. Two sailors were rescued from a stricken vessel off Spain's northern coast following an attack by a pod of killer whales. According to People magazine, the incident took ...

Blue whale calves enter the world already the size of a bus, yet they still face danger. A hungry killer whale sees a slow, ...

Orcas, also known as killer whales, are among the most well-studied marine mammals, captivating the public and scientists alike with their intelligence, strong social bonds and complex behaviors.

'Amongst all the different killer whale populations around the world, there's only a couple that have been observed doing this behavior,' one expert said Francois Gohier/VW Pics/Universal Images Group ...

"... Its prevalence is extremely low — it may appear and then not be observed again for several years," the study’s co-author, Javier Almunia said Kimberlee ...