Horseshoe crab
Even though the horseshoe crab looks like a crab, has claws and has the name crab, it is not really a crab. The scientific name for the horseshoe crab is Limulus polyphemus. ... The first horseshoe crab dates back to about 200 million years before the dinosaurs. The closest living relatives to the horseshoe crab are the spiders and scorpions. The horseshoe crab have seven pair of legs under their helmet like shell. ... Also the horseshoe crab has two pairs of eyes on the front top portion of the shell. The male horseshoe crab has a second pair of claws that look like boxing gloves. ... The horseshoe crab also has two pincers near the mouth to catch the prey.