FILE - In this July 25, 2016, file photo, released by the Atlantic White Shark Conservancy, a great white shark swims close to the Cape Cod shore in Chatham, Mass. In a February 2017 update to a multiyear study, Massachusetts Division of Marine Fisheries' top shark expert Greg Skomal said researchers using a plane and boats spotted 147 individual sharks off Cape Cod in the summer of 2016. (Wayne Davis/Atlantic White Shark Conservancy via AP, File)
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