January 20 marks Penguin Awareness Day, a day dedicated to celebrating and protecting our favorite black and white flightless birds. We've pulled together five of our favorite fun facts to pay tribute to our feathered friends:
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Penguins can drink salt water. They have specialized nasal glands that filter excess salt from their bloodstream, preventing hypertension.
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Average penguin diving speeds range from 3.7 to 7.5 mph. When startled, they may reach speeds up 20 mph.
There are only an estimated 6,000 to 15,000 Galapagos penguins remaining, making them the world's rarest penguin species.
The earliest known penguins lived 66 million years ago, when dinosaurs still roamed the planet. These prehistoric penguins weren't flightless like modern penguins.