While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in ...

Using sightings over four decades, researchers have pinpointed three main orca habitats off Australia, with key differences ...

A new report from a group of more than 30 experts says a population of endangered killer whales off the coast of British ...

Female killer whales live to be around 50 years old, but some orcas have lived up to 100 years. Males live shorter lives, usually dying by age 29. The oldest male orcas reach just 60 years.

Only 92 whale species can be found swimming in the deep, blue seas.One of the most recognizable is the orca, commonly known as the killer whale. These apex predators are the only living species in ...

Lolita, the killer whale and the star attraction at Miami Seaquarium for 44 years, on Jan. 31, 2014. Walter Michot/Miami Herald/Tribune News Service via Getty.

A study published in the journal Oceans details the remarkable chance encounter between a group of citizen scientists on a ...

But orca activist Fred Felleman, who earned his master's degree studying killer whales, said, "The thing to acknowledge is that whales are acoustic animals.

Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...

Orcas, also called killer whales, are apex predators of the ocean. Their intelligence, hunting skills, and sheer power make them both fascinating and terrifying. Here are 11 chilling facts!