A group of Bigg's killer whales (IMAGE) University of Exeter Caption A group of Bigg's killer whales near the coast of Washington State, USA. Typically, groups consist of a female and 2-3 of her offspring. Credit Center for Whale Research Usage Restrictions This image may only be used with reports of this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.