I've heard of people having bad experiences with hermits...I also watched my frogfish (K2) stalk a huge one - I didn't see whether or not he tried to eat it, but had it been smaller he probably would have, as he's very much into eating anything that moves. I don't think snails would be a problem though... Can't get Kermit to take anything dead though...sometimes I manage to shake the stick just right and he thinks it's alive, but then spits it back out almost immediately. :\