• smh@slrpnk.netEnglish
    2·
    3 天前

    I’m trying to square my instinct that

    1. snails aren’t bugs (because they’re squishy without the shell) with the feeling that
    2. crabs are bugs (because they’d go tap-tap if you tapped on their exoskeleton with a finger) but
    3. hermit crabs aren’t bugs if they’re in a shell but are bugs if they’re naked
    • agamemnonymous@sh.itjust.worksEnglish
      2·
      3 天前

      Snail shells aren’t chitinous.

      Crab shells are chitinous.

      Hermit crabs are only partly chitinous, and the shells they use are not chitinous.

      Hope that helps