this post was submitted on 23 Mar 2024
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Science Memes

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submitted 7 months ago by [email protected] to c/[email protected]
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[–] [email protected] 7 points 7 months ago (1 children)

So, I came back to this thread after seeing another on mantis shrimp colour drama further down: apparently their extra photoreceptor variety doesn't (might not?) increase their colour vision range because their brains can't merge the signals like ours do.

[–] [email protected] 4 points 7 months ago (1 children)

It's not about to see better, but seeing a wider range of colors and even polarized light. It's like having a sniper scope with night vision, just what these critters need to capture their prey. They do not need a clear vision more than one meter. just the distance to knock out the prey with the fastest fists in the west or in the case of the Pistol shrimp, which can close its pincer with such violence to produce a plasma bubble with the effect of a small caliber revolver (the aquariums with these need reinforced glass)

[–] [email protected] 1 points 7 months ago

Yes but the point was they might not see a wider range of colours. We interpret a whole spectrum by comparing the proportion of r/g/b; the other thread claimed they only see the colours they directly have a receptor for.