The Predator That Makes Great White Sharks Flee in Fear

For almost 15 years, Salvador Jorgensen from the Monterey Bay Aquarium has been studying great white sharks off the coast of California. When the sharks approached, the team would shoot them with electronic tags that periodically emit ultrasonic signals. In 2009, the team tagged 17 great whites, which spent months circling Southeast Farallon Island and picking off the local elephant seals.

Source: www.theatlantic.com