"We heard them scream. He was waving his arms around."
With no thought for their own safety, cousins Brenton Tua, 17, from Sydney and Sadieux Tua, 14, of Whangarei rushed from the nearby campsite and waded into the dangerous surf with their own boogie boards to attempt a rescue.
"We could only see one person in the water, so we just started running in," Brenton said.
He managed to reach the woman's 64-year-old partner and pushed him back to his younger cousin.
Sadieux helped the exhausted man to shore but was himself caught in a rip trying to go back out to help Brenton. While Sadieux got himself back to the beach, Brenton found the unresponsive woman in the surf and pulled her back to the beach.
Members of the public, including the youngsters' auntie - a nurse - performed CPR for around 30 minutes.
Sergeant Ross Laurie of Kerikeri police said that when an ambulance arrived, the woman was pronounced dead.
Mr Laurie commended the efforts of the two youths in what he described as rough surf.
The Nelson couple had been staying at the campground run by the cousins' family for two nights, and had been told by locals not to go into the water, Brenton said.
The sandy beach was popular with swimmers and fishermen, though was known for having strong currents and large surf.
Mr Woods said the cousins did everything they could have under the circumstances.
The woman remained unnamed at edition time and police were attempting to contact family overseas.
Her death had been referred to the coroner.
The woman's partner had remained at the campsite after receiving medical attention but he did not require hospitalisation.