watch people taking their babies for a swim class usually around 6 months. They naturally hold their breath--the problem is they don't know how to get themselves out of the situation. You can teach a baby how to swim for the surface, flip onto his/her back AND/OR swim themselves to the side of the pool and hang on if they are not old enough to get themselves out. It's been done. They have these classes for a reason. Everyone should be teaching their children early how to save themselves.