"They are very very brave boys. It's very sad."
Brisbane Water Police and Volunteer Marine Rescue later assisted, she said.
Sam moved to the Gold Coast in 2007 with his parents and two brothers, but grew up in Greenhithe in the North Shore.
He attended St Joseph's Catholic School, before moving on to Takapuna Primary School.
Today, his mother Maree Hutton said since making the move to Australia her son had become an "obsessed surfer", and also loved to spear fish.
"Of late he was obsessed with spear fishing, and free diving and catching fish," his mother said.
Ms Hutton said Sam's love of the water bought him back to New Zealand two years ago to compete in the National Surfing Championships at Piha, where his family have a bach.
Despite his efforts to be a professional surfer, he had recently started studying to become a primary school teacher, his mother said.
Today she described her son as a "talented" and "self-driven" boy.
"He was just one of those kids that everyone loved to be honest. Just a nice person. People that know Sam all say the same thing - he is just a lovely kid."