The king penguin (Aptenodytes patagonicus) is the second largest species of penguin at 70 to 100 cm tall and weighs 11 to 16 kg (24 to 35 lb). In size it is second only to the emperor penguin. There are two subspecies—A. p. patagonicus and A. p. halli; patagonicus is found in the South Atlantic and halli elsewhere.
King penguins eat small fish, mainly lanternfish, and squid and rely less than most Southern Ocean predators on krill and other crustaceans. On foraging trips they repeatedly dive to over 100 metres (330 ft), and have been recorded at depths greater than 300 metres (980 ft).
King penguins breed on the subantarctic islands at the northern reaches of Antarctica, South Georgia, and other temperate islands of the region.