Horseshoe Crabs's tails are called telsons. They use their tails to flip themselves right-side-up in case they get flipped onto their backs (although they can swim upside-down). Horseshoe Crabs do not have spiked or poisonous tails.
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Horseshoe Crabs's tails are called telsons. They use their tails to flip themselves right-side-up in case they get flipped onto their backs (although they can swim upside-down). Horseshoe Crabs do not have spiked or poisonous tails.