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Penguins Can Drink Salt Water and Not Get Sick
It seems that penguins are tough inside and out. Their digestive system has unique features that allow the bird to survive and thrive in its marine lifestyle. Penguins have a supraorbital gland, which is a gland that filters out sodium chloride from the bloodstream.
In other words, the gland filters salt out of the blood. This allows penguins to drink salt water when they are thirsty! Don’t try that if you get stranded on a desert island, however – it would kill you!
