A great white shark swims around the boat during a shark festival in Gansbaai, South Africa, Saturday, Aug. 18, 2007.
A great white shark swims around the boat during a shark festival in Gansbaai, South Africa, Saturday, Aug. 18, 2007. OBED ZILWA ASSOCIATED PRESS
A great white shark swims around the boat during a shark festival in Gansbaai, South Africa, Saturday, Aug. 18, 2007. OBED ZILWA ASSOCIATED PRESS

Scientists think orcas are removing sharks’ livers with ‘surgical precision.’ But why?

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