Printouts The Emperor Penguin, Aptenodytes forsteri , is the largest penguin. Penguins are birds that cannot fly, but penguins swim very well and spend most of their lives in the sea. The Emperor Penguin lives in colonies on pack ice in Antarctica .
Penguins have shiny, waterproof feathers that help keep their skin dry.
They have more feathers than most other birds - about 70 feathers per square inch. Each year, penguins molt, losing their old feathers and growing new ones. Males and females look very similar. They have webbed feet which they use for swimming. They eat fish and squid .