Class Pycnogonida

pik' nuh gon' uh duh, a class of arthropods comprising about 1,500 species of sea spiders

About Sea Spiders
Ranging in size from less than a half inch to almost two feet across, sea spiders "consist" almost entirely of four to six pairs of legs attached to a very small body. Despite their name and appearance, sea spiders are not directly related to true spiders (arachnids).