Blue whales and killer whales (orcas) are some of the largest creatures in the ocean and some of the most famous. These intelligent animals are truly amazing and share some distinct similarities.

See All Key Ideas MIRISSA, Sri Lanka — Sri Lankan waters are considered a haven for the largest creatures ever to have lived, the blue whale, a rare place for a resident, year-round population ...

A gang of more than 60 orcas brutally attacked and killed a 59-foot-long (18 meters) pygmy blue whale, leaving a nearby whalewatching tour shocked, new video footage shows. The dramatic incident ...