Chinstrap penguins in Antarctica have adapted to harsh conditions by sleeping in a very unusual way. They sleep in short bursts - about four seconds at a time. By doing this thousands of times daily, they get about 11 hours of sleep a day.
Chinstrap penguins in Antarctica have adapted to harsh conditions by sleeping in a very unusual way. They sleep in short bursts - about four seconds at a time. By doing this thousands of times daily, they get about 11 hours of sleep a day.
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