Emperor PenguinsBy Miss McNally Emperor penguins are the largest of all the penguins. They stand almost 4 ft.talland weigh 70 to 90 lbs. Emperor penguins can mate when they are 4 years old and can live to be 20 years of age. Emperors live in the coldest climate on earth. During the time the male incubates the egg, he may lose about half his body weight because he does not eat. They have short wings that help them to dive up to 900 feet to catch larger fish. They can swim 10-15 kilometers an hour which lets them escape their main enemy, the leopard seal.