Our new place has a pool. (Not this pool mind you, this is the pool at the condo we stayed at during our house hunting trip.) The Professor was holding his breath under water when he was about nine months old.
The Princess isn't far behind. She *LOVED* sticking her whole face in the water at the pool and blowing bubbles, much to dad's amazement. (He's a combat diver so my babies' love of the water comes naturally.)
Did I mention how excited we are about the pool at our new home?