Convergent evolution, or; how Nature loves to look at crabs

Convergent evolution is when different species evolve similar features independently.

Carcinisation is a specific example of convergent evolution, where crustaceans have evolved into crab-like forms. This has happened at least 6 times;

  • king crabs
  • porcelain crabs
  • the hairy stone crab
  • coconut crabs
  • the extinct order Cyclida
  • true crabs

Apparently there is significant ecological niche that a crab-like form can exploit.






















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