answer:I think this is right. Water goes to wherever there is proportionately less water. If you put a piece of onion skin in salt water and look at it under a microscope, you’ll see the cells shrink as water leaves them, due to the salt water being proportionately lower in water content than the cells. A snail’s entire (non shell) body is pretty much just a big mucous membrane, so the water behaves the same way as that in an onion skin.