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

Orcas, also called killer whales, are apex predators of the ocean. Their intelligence, hunting skills, and sheer power make ...

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 ...

Some baleen whales avoid killer whale attacks by singing songs at deep frequencies that their predators cannot hear.

Scientists confirm that orcas and dolphins have lost the ability to return to dry land due to irreversible evolutionary ...

For a second time, the world watched as Tahlequah, an endangered southern resident killer whale, struggled to keep her dead ...