How Penguin's keep themselves warm?

One of most important and interesting aspects of penguins is how they keep themselves warm and dry in the extreme cold conditions. A man standing barefoot on ice would quickly get frostbitten, penguins can do so all their lives with no damage at all. These highly specialized marine birds are adapted to living at sea – some species spend as much as 75% of their lives at sea. Penguins are usually found near nutrient–rich, cold–water currents that provide an abundant supply of food.

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