FS horseshoe crab
 

I have a horseshoe crab approximately 3 inches. He is very entertaining but there is not enough room in my 40 gal hex for him to move around. Keeps getting stuck and knocking things over. If someone has a larger tank, approximately 80 or more gals he would be quite happy in it. Needs sand as hides a good portion of the time. Make me an offer.