Wings spread, this Adélie penguin waddles through an Antarctic colony. Its black tail gives it a tuxedo-like appearance.
Weddell seals are known for their docile nature and are easily approached by humans.
Wings spread wide, an Antarctic emperor penguin baby awaits its next meal.
Leopard seals, named for their spotted coats, are one of the primary predators of Antarctica.
Adélie penguin parents take turns sitting on their nest to keep the eggs warm. Constant care in their extremely cold habitat is crucial to chick survival.
Emperor penguins are the largest penguins, standing about 4 feet (1.2 meters) tall.
King penguins' flippers are distinctively large, helping them dive deep in the icy ocean. On land, they waddle and toboggan across the ice—sliding on their bellies, and propelling themselves with their flippers.
Largest of the dolphins, the killer whale, or orca, is a highly successful predator, feeding on fish, seals, and sometimes whales.
King penguins live on the more temperate islands north of Antarctica. Although their habitat is warmer than that of emperor penguins, king penguins have four layers of feathers and huddle together for warmth.
Integral to the food chain, tiny shrimp krill are the primary food source for many marine mammals and fish.
