Superman and Basket were my very first crabs. I bought them this past May. They were both medium in size. Superman was a very chill crab, he let people pick him up and hold him, he very rarely pinched. Basket was hyper and loved to walk around the habitat. I found Superman dead in the crabitat yesterday. I picked up his shell, and he fell out. I had checked on him two days before, and I didn't see anything out of the ordinary with any of them. I had five (Superman, Basket, Mr. Baggins, Nipples, and Silent Bob). I also thought Mr. Baggins was dead, but it turned out he was molting, and you can find that corresponding story in the 911 forum. I removed the other three, and placed them all in another tank while i cleaned out the crabitiat, because i didn't know if maybe it was mites. I never found anything in the crabitat. When I went to put Basket, Nipples and Silent Bob back in, Basket fell out of his shell, lifeless as well. They both lived together by themselves for about a month before I got the other three, so I find it touching that they died together, but they lived so shortly.