I just learned that "crabs" are not a biological group, but an umbrella term for animals with a certain shape, which has developed at least five times independent of each other. Evolution is uncanny.
https://theconversation.com/crabs-have-evolved-five-separate-times-why-do-the-same-forms-keep-appearing-in-nature-195739
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Rasmus Fleischer (rasmusfleischer@tldr.nettime.org)'s status on Friday, 08-Sep-2023 04:35:40 JST Rasmus Fleischer