A tiger shark and lemon shark enjoyed a whale feast in the waters of Green Turtle Cay after researchers from the Bahamas Marine Mammal Research Organization returned a beached whale carcass back to the ocean on May 22.The whale carcass, identified by the researchers as a Gervais beaked whale, was found on the beach and then returned to the water after the BMMRO collected data from it, according to their post on Facebook.