What is the second eyelid on alligators and crocodiles for?



  1. 0 Votes

    The second eyelid that all crocodilians have is actually a nictitating membrane.  It extends from the front of each eye to the back when crocodiles or alligators swim under water.  While they cannot see as clearly through the opaque membrane, they are still able to see well enough to swim and their eyes are protected from sticks and other potential harmful objects.

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