All Penguins have Feathers: 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.

Anatomy: The Emperor Penguin is up to 3.7 feet (1.1 m) tall and weighs up to 65 pounds, this about half the size of an adult person. Males and females look very similar. Like all penguins, Emperor Penguins have a big head, a short, thick neck, a streamlined shape, a short, wedge-shaped tail, and tiny, flipper-like wings. They have webbed feet which they use for swimming. Penguins are countershaded; they have a lighter color on the belly and a darker color on their back; this coloration helps camouflage them when they are in the water, hiding them from predators.