Adélie penguin
Antarctic penguins, famous for their waddling walk on surface ice, transform themselves into graceful and powerful swimmers underwater. The emperor penguins' pursuit of squid, fish, and crustaceans leads them to dive as deep as . However, the emperor can go deeper. Scientists have found that the penguin can reach for short durations. The much smaller Adélie penguin is less ambitious. It feeds underwater for up to two minutes at a maximum depth of .