Emperor penguins live in the Antarctic, one of the most extreme (极端的) environments in the world. The there is so cold that the temperatures can fall to -40℃. They are the largest and heaviest kind of penguins in the world. They can hold their breath for up to 22 and can go under the water as deep as 565m. They can swim almost as as dolphins (海豚) 24 km per hour. They have to be able to swim fast, or they'll be by killer whales for food.
The female (雌性的) penguin one egg each winter. She passes it to the male (雄性的) penguin. Then she goes back to the sea for two months to find food. The male stays with the egg and keeps it warm. the egg gets too cold, the baby penguin inside will So the male keeps egg off the ice and covers it with his stomach feathers (羽毛).
For the two months that the females are away, the males stay together to stay warm and protect each other strong winds and snowstorms. During this time, they eat because they can't leave their eggs until the females return.
