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Location of the Alderman Islands
Map of the dive sites at the Alderman Islands

This article is intended to provide the already qualified Scuba diver with information which will help to plan dives in the waters of the Alderman Islands, whether as a local resident or a visitor. Information is provided without prejudice, and is not guaranteed accurate or complete. Use it at your own risk.


The Alderman Islands is a small archipelago to the east of the Coromandel Peninsula in the Bay of Plenty, North Island, New Zealand. The islands are sufficiently offshore to enjoy the cleaner waters associated with New Zealand's offshore islands, but are close enough to visit as a day trip from the mainland.

General topography[edit]

Climate, weather and sea conditions[edit]

Marine ecology[edit]


Dive sites[edit]

Hongiora (Flat Island)[edit]

  • Nudibranch Wall
Position: — 36°57.???', E176°03.???'

Middle Island[edit]

Position: — 36°57.???', E176°04.???'

Ruamahuanui Island[edit]

Position: — 36°57.???', E176°176.05.???'

Ngahoro Island[edit]

Position: — 36°58.???', E176°05.???'


Position: — 36°59.???', E176°04.???'


Get help[edit]

Emergency services

  • . Police.
  • . Ambulance service
  • . Sea rescue
  • . Recompression chamber
  • . DAN hotline

Get service[edit]

The islands are an uninhabited nature reserve, and there are no facilities at the islands. Dive charters from neighbouring ports on the mainland are listed below. For other services, see articles on the mainland destinations nearby.


Get around[edit]

Stay safe[edit]



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