When my son was about 6 months old I had him in my pool, I had seen the babies swimming on TV and how it was done, so I tried it. I was in the pool holding him, blew in his face and dropped him in the water, he went down and just started swimming, instinctively. No fear, no trauma, he didn't cry, just popped up like a cork and never did gulp or breath water. My wife and father in law were right there and OMG they freaked out! At the time they thought I was the worst dad in the world, we still laugh about it.