He went back into the water, this time accompanied by a surfer with a board.
"He disappeared 10 or 15 seconds before I got to him but I managed to grab hold of his hair, then his hand, and pulled him back to the surface. He was crying by the time we got him on the surfboard, which I thought was a good sign," he said.
Both boys were examined by St John and declared to have survived unscathed, although Mr Andrews said yesterday that they had been on the verge of drowning when he got to them.
Last week he told the boys that he was now part of their whanau, and thanked them for the opportunity to once again walk the corridors and where he had played when he had been their age and a pupil at the same school.
Wiremu and Rex were the real heroes, he added. They had known to float on their backs, to kick and not to panic. All he had had to do was pick them up, put them on his boogie board and get them back to the beach.
M Morrissey said he was glad that the boys had remembered the survival skills they had learned at school, while their grandmother, Janet Morunga, again thanked Mr Andrews for returning her mokopuna to their family.
"It was a wake-up call for us. Without you Tangaroa would have taken them. Without you we would have had a double tragedy," she said. "You will always be part of our family, and a big part of our my mokos' lives."