Killer whales, or orcas, are among the most intelligent predators in the ocean, growing up to 8,000 kg and hunting in highly coordinated groups. Instead of attacking randomly, they work ...

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

A pod of killer whales were spotted hunting a large sea lion off the coast of Monterey Bay, California. Incredible drone ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Add Yahoo as a preferred source to see more of our stories on Google. Southern Resident orcas (Center for Whale Research/Courtesy to The Bellingham Herald) At least three orca whales were spotted ...

Vancouverites rayaeffect and raysandhues also captured video of the orcas under the Lions Gate Bridge from the Stanley Park ...

Killer whales have been seen detaching lengths of seaweed and using them to massage each other—the first evidence of tool-making by marine mammals. The whales bite off the end of a kelp stalk, ...

Killer whales rarely risk hunting leopard seals – Antarctica’s second top predator. But when reinforcement whales appear, this group of killer whales has a technique for capturing this aggressive ...

Killer whales and dolphins have been working together to hunt salmon in the northern Pacific Ocean, an unexpected finding that further reveals the complex social lives of marine mammals. Video cameras ...

At least three orca whales were spotted swimming through Bellingham Bay on Tuesday. Bellingham resident Nate Wallace captured a video of the whales at about 4:30 p.m. as they were swimming south in ...