New Zealand · Bay of Islands
This site features a prominent swim-through that forms a natural tunnel about 35 m long. The entrance begins around 24 m and the tunnel exits at roughly 18 m, opening into an area of kelpy boulders at the northern end. Divers can expect to see resident big eye fish within the tunnel along with a variety of reef species around the surrounding rock and kelp habitat.
Site Conditions
Safety Notes
Includes an overhead swim-through; use appropriate training, lighting, and gas planning for a tunnel environment.
Community notes to help plan your visit.
Scuba Diving
The main dive is a 35 m swim-through with depths around 18–24 m.
Last Updated

Bay of Islands cave dive with a booming entrance and surge-prone mouth

Shallow kelp-and-boulder reef dive in the Bay of Islands.