The family were camping at the Tatapouri By The Sea campground, 14km north of Gisborne on the East Coast, as they had done for several years at this time of year.
The Wakelin brothers and their 20-year-old family friend went fishing at nearby Makorori Beach on Saturday morning. John and his friend got caught in metre-plus surf about 100m off the beach.
A nearby surfer reached the brothers' friend, got him on his board and back to safety on shore. But the two brothers disappeared in the waves.