I was going to post some references for drownproofing classes, teaching babies to swim/float enough not to drown if they fall in a pool.
But then I found the American Academy of Pediatrics website, which recommends against teaching kids younger than 3 years old to swim. Seems like you can get lulled into complacency, and/or the kid can ingest so much water they get water intoxication. A study or two'd be nice.
And their recommended alternative, of course: enrolling in "a 'mommy-and-me' class" at the Y. Is there no end to this rampant motherism?