It’s not hard to make them swim; they do that automatically when the volume doesn’t block them. It’s just that they swim after you and the attacks aren’t the best and stuff. They probably want to do it better if they allow it. It’s one of those polish things. They have swim animations just like the player does, so it’s probably just not something they like the way it is. Stuff like crocs kind of just sink, so they’d need swim animations with buoyancy and things. I’m working on adding sharks and it’s a bit of a pain (but then again, I’m an amateur so maybe it’d be easier for them, just a question of priority).