Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. A distinct subpopulation of orca whales appears to be using ...

A study comparing the nutritional demands of killer whales with the caloric content of their prey has startling implications for the potential impact of these large predators on populations of other ...

Transient killer whale attacking a California sea lion off Big Sur, California. [Related: Orca observed hunting and killing a great white shark by itself for the first time.] The other type of killer ...