Being the new owner of a pool I'm concerned with kids falling into it and not knowing how to swim. My best friend has 3 kids ages 4,2 and 1 who come swimming and the more comfortable they get around the water the more adventurous they become. Just this past week they graduated to jumping in from the edge. They haven't taken professional swim lessons yet but always have safety floats and an adult with them. That still causes me some anxiety however. So how early is too early to teach your child to swim?