October 7, 2024

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Why do animals keep evolving into crabs?

Why do animals keep evolving into crabs?

Round flat shell. Tail tucked under the body. This is what crabs look like, and what peak performance looks like — at least according to development. The crab-like body plan has evolved at least five times among the crustaceans, a group that includes crabs, lobsters, and shrimp. In fact, it so often happens that there is a name for it: carcinoma.

So why do animals keep evolving into crab-like shapes? Scientists don’t know for sure, but they have a lot of ideas.