Penguins are aquatic, flightless birds, native to the southern hemisphere and predominantly found in the Antarctic. On land they just waddle along or toboggan on their bellies, but once in the water they become dynamic, speedy swimmers feeding on krill, fish, squid and other sea creatures. The largest species is the Emperor Penguin with a height of around 1.2 metres and weighing up to 45 kg. The smallest is the Little Blue, a mere 30 cm high and only about 1.5 kg. As there are no land predators in Antarctica, penguins seem to have little fear of humans and can be approached as close as about 3 metres. And in a zoo they are perfectly prepared to parade, as these photos show.