Researchers examining 20 years of data on orca sightings have discovered a worrying trend linked to the receding ice, ...

This shared activity, which was captured using drone footage, is notable because it is the first time scientists have observed orcas using tools for the benefit of mutual grooming. How much do you ...

Killer whales have been documented offering food provisions to humans swimming near them or in nearby boats. Learn more about ...

Female killer whales live up to 90 years in the wild, and most live an average of 22 years after menopause.

Scientists documented 34 remarkable cases of wild killer whales trying to give food to humans across four oceans over 20 ...

When whales die, their giant bodies usually sink to the seafloor and begin a new life, nourishing an entire ecosystem of deep sea creatures.

Boaters near San Diego spotted a group of Eastern Tropical Pacific Killer Whales blitz a bottlenose dolphin pod before attacking an adult.

Lolita -- an orca that has lived at the Miami Seaquarium for more than 50 years -- died Friday at the marine-life park ahead of her planned return to her native waters in the Pacific Northwest.

The Truly Incredible Story of Keiko the Killer Whale One whale, and what it represents for millions of people.

Darren Croft on killer whale matriarchs and the menopause Jim-Al Khalilii talks to biologist Darren Croft about his studies of killer whale family life.

Orca moms spent precious resources feeding their fully grown adult male offspring. A new study finds that this may limit how many more young they produce.

A pack of killer whales sank a 50-foot yacht in Moroccan waters Sunday when the massive sea mammals slammed into the vessel and forced two sailors aboard to flee, officials said.