They can also swim and dive underwater. Diving ducks can swim underwater to forage. On the journey out, they swim slowly and dive down to around . They were also expected to know how to swim and dive. It can swim long distances, even under water. Green sea turtles typically swim at . The tadpoles then swim out into the open water and rapidly complete their development. Elephants sometimes swim underwater and use their trunks as snorkels. Rabbits generally do not swim and avoid water. They do not swim or walk and cannot take off from a flat surface. Karath could not swim, and was in danger during the boat capsize scene. Many fish maintain buoyancy with swim bladders. They can swim under water for 12 to 17 minutes. Unlike Sonic, Tails can also swim underwater. In India, bull sharks swim up the Ganges River and have bitten bathers.