Penguin
Description
Penguins are a group of aquatic, flightless birds living almost exclusively in the southern hemisphere, especially in Antarctica. Penguins have countershaded dark and white plumage, and their wings have become flippers. Highly adapted for life in the water, they spend about half of their life on land and half in the oceans. Most penguins feed on krill, fish, squid, and other forms of sealife caught while swimming underwater.
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