A person has died after a boat with seven people on board capsized on Auckland's Manukau Bar.
Police were alerted just before 10am.
"Several nearby boaties responded without hesitation, helping to recover seven people from the water," Coastguard said in a statement.
Six people were pulled out of the water and were treated by ambulance staff.
Coastguard volunteers from Waiuku, Papakura, and Auckland and the Coastguard Air Patrol took part in the rescue.
"Volunteers from Coastguard Waiuku met the assisting vessels at Little Huia to provide first aid and check the wellbeing of those rescued," they said
Coastguard Auckland Air Patrol searched the South Channel for the overturned boat, while Coastguard Papakura checked the front of the bar.
The vessel is believed to have sunk and could not be located.
"As bars like the Manukau Bar can be unpredictable and dangerous, we encourage all boaties to refresh their knowledge by attending one of our Bar Awareness seminars, held across the country and online," the Coastguard said.
Coastguard said conditions on the bar this morning were good.
Police said all those on board were wearing lifejackets.