Spinner dolphins are the acrobats of the ocean. In one astonishing leap out of the air, they can jump nearly 10ft (3m) and spin up to around seven times. Spinners grow 4 to 7.7 ft (1.2 to 2.35 m) long and weigh approximately 130 to 180 lb (59 to 82 kg). There are four recognized subspecies of spinner dolphin that vary in appearance and social structure. However, all spinners have long, skinny beaks and slender bodies with small curved flippers, and tall triangular dorsal fins. They prefer tropic