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[–] 18 points 2 months ago* (last edited 2 months ago) (5 children)

Fun facts about horseshoe crabs:

  • Not crabs, in fact not even close. Chelicerates like the arachnids.
  • Have photoreceptors in their "tail" (telson).

Edit: For some taxonomic context, king crabs are closer than shrimp are closer than woodlouse are closer than barnacles are closer than bees are closer than myriapods (centipedes and millipedes) are closer than horseshoe crabs to being crabs.

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  • [–] 8 points 2 months ago (2 children)

    The question is though, are they in fact a horse, shoe, or horseshoe?

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