Researchers using a new drone say they have observed killer whales finding and modifying stalks of kelp to preen each other.

Scientists have spotted a subset of killer whales using seaweed to scratch each other’s backs, marking the first known ...

Scientists have spotted a subset of killer whales using seaweed to scratch each other’s backs, marking the first known ...

Southern resident killer whales are using kelp for what scientists suspect are both hygienic and social purposes.

In the first known toolmaking by a marine mammal, southern residents have been documented detaching lengths of seaweed and ...