Desert winds often blow sand into the air. To protect their eyes, camels have long eyelashes (A) that catch most of the sand. If sand gets into an eye, a camel has a third eyelids to get it out (. Like a windshield wiper on a car, this extra eyelid moves from side to side and wipes the sand away. The eyelid is very thin, so a camel can see through it. In sandstorms, camels often close their third eyelid and keep walking. You might say that a camel can find its way through a sandstorm with its eyes closed.
Source: Care2
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