do boobs float in the water?

not enough to save your life if you can't swim, but they are buoyant due to the fact they're mostly made of fatty tissue, along with milk glands, milk ducts, and supportive tissue.

Step into water and let us know.

Mine do , but they are kinda small and light so bathtime is fun, lol

Mine do. They remind me of flotation devices lmao

Most likely. Too much adipose tissue there. But muscles won't.

They are globs of fat. So, yes.