It probably wont happen in a tank with fish and crabs but they should grow out just fine in a sump or fuge. Most that I buy are captive bred which is nice there shells are usually very clean.
im sorry? thats just how my face is.
ahem.
ANY PERSONS (EXCEPT PLAYERS) CAUGHT COLLECTING GOLF BALLS ON THIS COURSE WILL BE PROSCECUTED AND HAVE THEIR BALLS REMOVED.
i think yours is creepier.