It is believed the origin of horseshoe crabs dates back 450 million years making them 225x older than modern man, Homo Sapiens, who dates back a mere 2 million years. They have changed little over the millennia. This little guy was swimming in the shallows. Do they sting? Not sure. Do they bite? I was in a 3td world country where I am not overly confident in the medical care so I rationalized it was worth the risk finding out. So, i opted not to pick it up. I used a stick to help direct it to very shallow water so I could get a few pictures.