Is this a round-tailed horseshoe crab or a Chinese horseshoe crab with small thorns on its head?
This is a national second-class protected animal. There are only 3 genera and 4 species of horseshoe crabs in the world, namely horseshoe crabs and Chinese horseshoe crabs. Also known as Chinese horseshoe crab or Japanese horseshoe crab, Chinese horseshoe crab and round-tailed horseshoe crab, among which Chinese horseshoe crab is a national protected animal, while some provinces list Chinese horseshoe crab, southern horseshoe crab and round horseshoe crab as provincial protected animals.