A killer whale has been filmed doing something that looks almost cartoonishly violent: charging at a large ocean sunfish and hitting it with such speed and force that the fish detonates into a cloud o ...

Southern resident killer whales have been caught on drone video crafting kelp tools to groom one another—an unprecedented behavior among marine mammals. This suggests a deeper social and cultural ...

Hunting killer whales always eat the animals they kill, typically leaving behind only a few low-energy parts, such as fins. "Also, if it was just aggression, they wouldn't bother to tear off the fin," ...

While killer whales (Orcinus orca) can trigger the immediate departure of white sharks (Carcharodon carcharias), extended absences from their aggregation sites are also part of the sharks' natural ...

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer coastal habitats. Inner-coast whales hunt smaller prey in shallow, ...

A pod of approximately 12 Eastern Tropical Pacific orcas was spotted by passengers on a whale watch boat off the coast of San ...

Orcas have been known to slap around stingrays, punt seals into the air and otherwise play with their food. But killer whales don’t just toy with live prey. Some also seem to enjoy destroying the ...