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I was just listening to eons in my car and specifically the episode about armored fish, and the thought occurred to me: isn't evolution ultimately selecting for adaptability? (m.youtube.com)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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It would seem the design that can survive the most extinctions would be the clear winner in the end.

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[–] [email protected] 6 points 9 months ago

First, the vast majority of species depend on camouflage at least somewhat, since there are very few species that are neither predator nor prey. Also, albinism prevents your skin from properly protecting you from the sun. So even then, it is selected against. As other have pointed out though, caves don’t have either of these forces at play—the darkness makes visual camouflage irrelevant and there is no UV light. So there, as you predicted, most species are albino.