lol I kept a blue crab in my 155g years ago. I wasn't aware they molted until I had him. I thought it had died and two days later I looked in the tank and there he was. I freaked and accused Chef of catching one from the creek and putting it in there. Then someone mentioned that crabs molt. LOL It was too funny.
Glad to hear yours are doing well.
I moved your thread to the Saltwater Crab section of the forum.
It's pretty cool, try and make the shell pose into a natural position whilst its still wet/movable and not brittle, then you can stuff it and display it!
I know someone who had a tarantula. and they kept its skin