Nictitating membranes are common in many animal species for eye protection

ooh, interesting

You know the little weird bit in the corner of your eye by your nose?

That's the remains of our third eyelid.

ew!? you’re lying!!

https://www.britannica.com/list/7-vestigial-features-of-the-human-body

Number 4.

You're welcome.

wow! how peculiar

> In over 80% of cases, the extra lid forms on the right eye, while less than a fifth see it appear on the left. The concensus amongst Biologists is that this is due to the anticlockwise circulation of the wind in areas rife with camel populations.

Wait so literally three lids, not three pairs of lids? Also, why would the circulation of the wind make a difference? Do the camels only walk in one direction their whole lives?

The whole list is cool actually. :)

Somehow while scrolling through I read that as “Canadians have three eyelids”.

You should make a post about this

defo will!

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I thought they evolved in a cold/icy envoronment.

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>Through repeated effort, however, humans can recover some ability to wiggle their ears.

I can't tell if this is a joke. How would someone do that?

>and let nature takes its course.

You mean evolution?

>The conjunction of three eyelids with an arid sandy environment, seems as illogical

Having an extra translucent eyelid to protect from sand while still being able to see a bit "seems illogical"? What?

It's basically desert goggles.

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I mean… I can do it, you just try to wiggle your ears… maybe wiggle them by hand and see what it feels like, then do it with muscles.

It’s not like you flap them around or point them, but they can move a little.

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They do