Isaac has already showed us his impressive strength with a flipper stand. Another way these seals can show off their incredibly strong flippers is by doing the ever impressive speed swim. Fur seals can swim at impressive speeds, said to be over 10 mph!
Watch how easily Ursula glides through the water at a high speed.
Her trainers worked up her distance by starting close to the end point and gradually increased the distance. She can now swim the entire length of the pool! On average, people can swim at around 3 mph. Can you beat that?