Stock Photo: Galapagos shark, Carcharhinus galapagensis, and snorkelers in cage, showing nictitating membrane, offshore, North Shore, Oahu, Hawaii, USA, Pacific Ocean

Stock Photo: 1566-889698 Galapagos shark, Carcharhinus galapagensis, and snorkelers in cage, showing nictitating membrane, offshore, North Shore, Oahu, Hawaii, USA, Pacific Ocean