You can watch PBS on television via most cable TV packages — check your local listings for details. You can also live stream "Expedition Killer Whale" for free on the PBS website and app, which will ...

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 ...

Pack-ice killer whales are highly social creatures, communicating through various vocalizations like pulsed calls and whistles. For the first time, researchers have recorded these vocalizations and ...

Two Los Angeles-area boaters on Saturday spotted a juvenile gray whale that had recently been killed by orcas and was missing ...

Orcas use advanced hunting tactics, working together like a wolf pack. They create waves to wash seals off ice, trap fish in bubbles, and even beach themselves to grab prey. Killer whales have ...