Are Penguins Birds or Mammals?
Penguins are birds, not fish or seal-like mammals. Feathers, eggs, air breathing, and wings are the clearest clues.
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Can Penguins Breathe Underwater?
Penguins are excellent divers, but they cannot breathe underwater. Their advantage is breath-holding, oxygen storage, and efficient dive physiology.
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Can penguins drink seawater? Salt glands help them remove extra salt
Penguins can handle saltwater life because they have salt glands. The key is removing extra salt, not magically making seawater fresh.
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