![]() Then, carcasses of several sevengill sharks appeared on the seabed with the same clean tears in their bodies. But on November 9, 2015, divers noticed something peculiar: The sharks had abandoned the dive area virtually overnight. Located on the southwestern coast of South Africa, False Bay is normally teeming with sevengill sharks, with scuba divers spotting as many as 70 in a single dive. What’s more, their observations suggest that the orca pair are showing others how to remove shark livers-possibly an intriguing example of culture in the animal kingdom. Orcas, which live worldwide, display a wide range of diets and behaviours, including eating sharks, whose organs-especially their livers-are high in fat.īut scientists have never before documented orcas performing this kind of consistent, surgical predation on sharks. Undoubtedly the biggest mystery surrounding Port and Starboard is whether their hunting behaviour is unique. ![]() candidate at Rhodes University in South Africa. "My reaction was just, 'Here we go again,'" says Towner, a shark biologist and Ph.D. ![]()
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