We started taking ds at 21 months, and he still goes every week now and loves it. We play games and sing songs, he can blow bubbles and kick his legs, and he can swim underwater on his own for about 5 seconds. They also learn water safety, such as how to resurface if they fall in, and how to use their hands to "walk" around the edge of the pool to the steps.

We don't expect him to be a champion swimmer, but he enjoys it and he is confident in the water. It's also great exercise for him.

I'm 29 weeks preg atm and still take him ok, but dh will take him for the last few weeks if necessary. Sometimes the swim schools have evening classes too for dads to go to...