The babies, tots and toddlers programme focuses on water awareness and the children are introduced to the idea of finding the bar at the edge of the pool, as well as being taught how to rotate from their front to their backs in the water.
Mum Kelly Dillon, at the pool with husband Garry and son Jacob, said Jacob loved being in the water.
"We are both big water people and New Zealand is surrounded by lakes and rivers and it's the one thing that we as kids had the experience of, so we wanted the same experience for him," Mrs Dillon said.
The morning lessons also provided a good opportunity for Jacob's dad, Garry, to spend some quality time with him, she said.
A recent Colmar Brunton survey showed 45 per cent of under 3-year-olds in New Zealand are attending water confidence lessons.