Emperor Penguin Facts

The emperor penguin is a flightless seabird that lives in Antarctica and the Southern Ocean. It is the largest of the living penguin species and is closely related to the king penguin.

Its life cycle is strongly tied to sea ice. Adults breed in colonies around Antarctica and forage in cold ocean waters where fish, squid, and krill are available.

Emperor penguins have black backs, white bellies, and yellow-orange markings around the neck and head. Their dense feather layers, body fat, and compact shape help them survive severe cold.

They are much larger than most penguins, standing about 110 to 130 centimeters tall. Adults can weigh up to about 40 kilograms at the beginning of the breeding season.

Emperor penguins breed in colonies around the Antarctic continent. Many colonies are on fast ice, which is sea ice attached to land, islands, or grounded icebergs.

Adults travel between breeding colonies and the ocean, where they dive for food. Stable sea ice is important because breeding takes months.

Emperor penguins eat mostly fish, with squid and krill also in the diet. They are powerful divers that often forage between about 150 and 250 meters deep.

Their deepest recorded dive is 565 meters, and the longest recorded dive is 22 minutes.

In winter, emperor penguins huddle together to reduce heat loss. Individuals shift through the group so birds take turns in warmer and colder positions.

This huddling behavior is one reason the species can breed in conditions that would overwhelm most birds.

Emperor penguins are famous for breeding during the Antarctic winter. The female lays one egg, and the male incubates it on his feet under a warm brood pouch while fasting.

After the chick hatches, both parents take turns caring for the chick and foraging at sea.

Emperor penguins have dense scale-like feathers, body fat, small bills and flippers relative to body size, and heat-exchange systems that reduce heat loss from feet, wings, and bill.

Their nasal chambers also recover heat that would otherwise be lost during breathing.

The future of emperor penguins is closely linked to Antarctic sea ice. Emperor penguins are now listed as Endangered, with climate-driven sea ice loss expected to sharply reduce populations over coming decades.

Monitoring colonies, sea ice, and foraging areas helps researchers understand how environmental change may affect this species. Protecting emperor penguins also means protecting the Antarctic food web that supports their prey and predators.