Certain people take to swimming very easily; others make a terrible fuss.
Little Mischa is of the former, he sees no danger or obstacle in water. Give him a pair of water wings, and he's straight in. A few days ago I was very slightly supporting his body in the water, but in fact I don't think he really needs his wings at all. Even his curls seem to love it.
This was taken yesterday when the water was 24 C; he didn't complain.