She was just 10 months old, but Tabitha Handley was learning an important life lesson. It was one her mum knows the importance of all too well: confidence.
"That's definitely something that I wanted for all my children, for them to be confident in themselves," says mother Heather Henare, now a grandmother of six and the head of Women's Refuge.
Confidence - and the value of being able to swim in a country with a very long coastline and thousands of lakes and rivers.
Mum's hands were close by but out of sight, and Tabitha must have felt like she was on her own under the water that summer's day in 1987.