I have a few who enjoy going into the water - they may be the wierdos of the group but there are always black sheep of any species! I know some of us have balls who think they are boas I would say Give the bathtub a shot - you may practically be able to hear them "screech!" with horror as they qucikly find the nearest escape route, or you may find them casually swim around, take a soak, and chill in there for a while.