[penguins chattering]

(male narrator) Their waddle has made them famous. Emperor penguins are the cutest creature in the world's coldest climate--Antarctica. These flightless marine birds have adapted well to the ice, snow, and frigid waters. Emperors are the largest of all penguins, and being big actually means being warmer. Their bodies can conserve more heat. Emperors have more feathers per square inch than any other bird, helping to keep them warm. When diving for food, a thick layer of blubber insulates them from the cold. If these birds seem extra cuddly, there's a reason. Adults and chicks alike will huddle together in large packs to beat the cold. Adults walk with newborns on their feet and under blubber to protect them from the elements. They don't let ice become an obstacle. Travel involves sliding on their bellies for miles at a time. They're also expert climbers, using claws and beaks to scale the icy cliffs. They learn this at a very young age. That's life with the ice for emperor penguins. Accessibility provided by the U.S. Department of Education.