Yea they do. Little sherman tank! Has yours started re aquascaping your tank yet? Mine knocks things over all the time. I'm just about to the point where he is going back if it were not for the fact I have a fuge I'm developing. Then it will find a new home in there. Away from my corals!
Zebra crabs are aggressive enough to take over snail shells. I lost a lot of cerith snails to those guys, also have zebra crabs running around in empty mexican turbo snail shells. I will tell everyone to stay away from the zebra crabs.