Interesting. I happened to be one of those natural born swimmers (not as newborn) as an infant as I could float, move around by wiggling like a fish and close

Interesting. I happened to be one of those natural born swimmers (not as newborn) as an infant as I could float, move around by wiggling like a fish and close nasal passages instinctively (w/o exhaling) at 8 months. Always perplexed me that some people will hold their nose closed or have to exhale through it while under water.