Emperor penguins are also the heaviest, weighing up to 100 pounds. Most penguins can be recognized by their white breasts, black backs, and black heads, resembling a small man in a tuxedo. Some penguins have other distinguishing features such as orange, red, or yellow areas on their heads or necks. Penguins are gifted swimmers, using their wings as paddles. Their bodies are designed to conserve heat, making them able to withstand intense cold, either in the water or on icebergs.
Penguins feed off of small sea life forms, including fish, crustaceans, and cuttlefish.
Most penguins can be found in captivity throughout the world. The Emperor and Adelie penguins, however, are only found in a few locations. Because they live exclusively in the Antarctic, only places such as Sea World keep them in captivity. The Sea World Parks have constructed special buildings in which the penguin's complete habitat has been simulated, i.e. air temperature, icy surfaces, and cold water. Sea World puts the penguins in a considerably more realistic environment than the usual zoo exhibit, which consists of a cold water pool constructed in an outdoor setting, in a city such as Cleveland or Miami.