It wasn't immediately obvious to Holly Toohill that her son was drowning.
Four-year-old Mason was happily playing in the pool at the Whanganui Splash Centre on Monday and seemingly having fun.
"He was bouncing around like he always does and going under water and coming up again so I just kept an eye on him," she said.
But she realised Mason was in trouble when she called out to him and he didn't respond. Mother's intuition kicked in.
"He was drowning and it wasn't like anything you see in the movies, he wasn't shouting, he wasn't in distress, he wasn't just floating. He looked like he was just playing but he was drowning."