Learn more about a group of orcas in the Pacific Northwest that have been observed making and using tools to groom each other ...

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

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

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean ...

As big as a large sperm whale at more than 17 meters (55.78 feet) long, the newly named Cymbospondylus youngorum is the largest animal yet discovered from that time period, on land or in the sea.