A wife dived into pitch-black sea to rescue her drowning elderly husband after hearing him fall from their boat.
The woman, holding her unresponsive husband's head above water, screamed for help from neighbouring boats.
Several people from other vessels raced to help the 78-year-old man.
Maritime police, the coastguard and a rescue helicopter also rushed to the scene at Ponui Island, east of Auckland, on Monday about 9.30pm.
A Westpac rescue helicopter paramedic was winched down into a boat to stabilise the elderly man as he was taken to shore.