Puffins are excellent swimmers that use their wings to stroke underwater with a flying motion. They steer with webbed feet that swirl like a rudder . They dive to depths of 200 feet though they usually stay underwater for only 20 or 30 seconds. Puffins typically hunt small fish like herring or sand eels. In the air, puffins are great flyers.By flapping their wings up to 400 times per minute they can reach speeds of 55 miles an hour.