Swimming Screamy Boy

I want to be able to show off my screamy boys but if I put one behind glass, etc to not have people “wake him up” he usually falls through the floor and I have to use the item finder, scroll through hundreds of items, and then place him until I have the color I want.
Would it be possible to give him swimming animations (I’m thinking just the player swimming animations) when they’re underwater? They could still be in a sleeping pose when placed out of water