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When we close our eyes are we "seeing" dark or do our eyes shutdown?
#8
RE: When we close our eyes are we "seeing" dark or do our eyes shutdown?
Is it logical to assume full time marine animals don't need eyelids because their eyes never dry out? Is that the only evolutionary function of eyelids?
And maybe to keep dust out, etc

Another question... A seal has eyelids, therefore tearducts ... Does it ever have to blink whilst underwater?
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RE: When we close our eyes are we "seeing" dark or do our eyes shutdown? - by ignoramus - December 7, 2017 at 3:11 am

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