These horseshoe crabs are discounted because they have cosmetic issues: some may have no legs, some have some legs, some may have a dent or crack. Some are different colors. Sizes vary from like 2 inches to up to 6. We will sell these off from best to least desirable condition, so act now and get a better one! Horseshoe crab shed skeleton. Priced per unit. AGAIN, these have some cosmetic issues like perhaps missing some or all limbs, or have cracks or dents. Sizes vary. Varying degrees of damage.