Dana Bethea, National Oceanic and Atmospheric Agency, Southeast Fisheries Science Center, Panama City Laboratory ecologist, tries to untangle a bull shark that got caught in their gillnet while they were performing their Gulf of Mexico Shark Pupping and Nursery Survey off the shores of Tyndall Air Force Base, Fla., April 25, 2013. The shark was tagged then released back into the bay. (U.S. Air Force photo by Senior Airman Christopher Reel/Released)

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Photo by: Senior Airman Christopher Reel  |  VIRIN: 130425-F-HE651-501.JPG