On Sunday we had S's first swimming lesson. The lesson consisted of him going underwater a handful of times (slowly) and him "floating" around on his back. He wasn't really happy, but he was never scared. He cried after his first dunk, but after that he just stared around and watched other people swim by (there was someone swimming laps near us).
We go back next week for the second lesson (more of the same). The goal here isn't really to teach him strokes now, but to keep him from being scared of the water and learn how to hold his breath. We will work on blowing bubbles in a few weeks.