In our view, the earlier the better once a child reaches 6 months! Here at FOSS our Backfloat Baby program is designed for little swimmers aged 6 months to under 3 years, focusing on water acclimation, fun, and a few simple skills.We have beginner levels for all ages. No one is ever too old to learn to swim and become more comfortable in the water, but like many skills, it’s easier to learn the younger the student is at the start – it starts to get more challenging to learn when you initiate lessons between 6 and 11. Older students, and even adults, can absolutely learn to swim, but may need to overcome ingrained habits and feelings about water and train muscles not used to swim skills.