Infant Swimming Facts by Babyswimming.com:
We have observed that the optimal age to start babies (swimming lessons) is between 6 months and 12 months old. At this stage the majority of infants are ripe in the water. They are comfortable, the water feels natural. These very young babies still seem to have a memory of the fluid environment in the womb. However, a window of opportunity for smooth learning still exits up to approximately 18 months old (especially for water adjustment and initial submersions). At approximately 19 months to 24 months toddlers can begin to enter the "challenging twos" phase. It is easier to teach water adjustment and breath control before this stage begins. However, it is never too late when utilizing a creative and interactive curriculum. The group class structure works miracles and motivates children to participate with their peers, at any age.