Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

Bigg’s orcas were observed stalking seabirds in Puget Sound last month, a behaviour that researchers believe wasn’t hunting, ...

A U.S.-based research team has documented a rare glimpse of Bigg's killer whales engaging in some unusual behaviour, ...

Charvet Drucker's shutter rang out in her ears as she observed what she thought were the seal's last moments of life.

The killer whales ripped the liver out of a shark and passed it around—only the second time orcas have been seen engaging in this behavior.

Newborn pilot whales have been spotted mysteriously swimming among pods of orcas. Scientists are trying to puzzle out how the ...