I was not super thrilled about pool ownership, but honestly, it is worth it.  These guys spend HOURS every day in the water.  Sure, their hair will probably fall out by the Fall, but hey, at least we will be able to avoid lice once school starts.  Oh, the joys of childrearing...  Seriously, though, they have pretty much taught themselves to swim.  We did two sessions of lessons at the YMCA this Spring, but mostly what you see here is self-taught right in our own backyard.  Swim, little fishies, swim.