Marine biologist Carrie Newell photographed four blue whales — the largest animals on Earth — 3 miles off Depoe Bay.

To start a kelp-based grooming session, an orca places the bull kelp stipe on its face and nuzzles against another killer ...

Killer whales, also known as orcas, are incredibly intelligent apex predators. As such, researchers have been observing the ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

Whales observed in Salish Sea off western North America Behaviour is a rare instance of tool use by marine mammals It may promote skin health and strengthen ...

The whales use quick body movements to tear pieces of bull kelp for use as tools, perhaps the first known toolmaking by a marine mammal.

The nearly 1,065-pound whale is currently recovering in a medical habitat at the aquarium, but an expert says she's not yet ...

An endangered humpback whale was recently spotted showing severe injuries from an apparent collision with a boat near Glacier ...

The team ran experiments offering people who returned bottles the option of getting a typical ten-cent payout—or the small chance of winning a big cash prize. The result was that people recycled 47 ...

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of ...

Killer whales off the west coast of North America have been spotted making and using tools to groom each other, the first time such behaviour has been recorded in marine mammals. Scientists from the ...

The orcas clearly liked this activity because different whales were recorded preparing the stems eight times and rolling the ...