Last updated June 2026
Embark on a day tour to Mayor Island (Tūhua), a dormant volcanic island in the Bay of Plenty that combines hiking across ancient lava flows with snorkeling in a protected marine reserve. Located approximately 26 kilometres offshore from the Bay of Plenty coast and about 35 kilometres from Tauranga, the island offers visitors a rare chance to explore a privately owned wildlife refuge with strict access rules. Day trips typically depart from Tauranga or Mount Maunganui by charter boat and focus on the island’s dramatic geology and the surrounding Tūhua Marine Reserve. The experience highlights both the natural volcanic features and the rich marine biodiversity in waters warmed by subtropical currents.
Practical Information
| Location | 26 km offshore from Bay of Plenty coast, ~35 km from Tauranga |
| Island type | Dormant shield volcano with caldera |
| Marine Reserve size | 1,060 hectares, established 1992/1993 |
| Access | Charter boat only; prior booking with Tūhua Trust Board required for landing |
| Activities | Hiking/walking, snorkeling, diving, wildlife viewing |
| Facilities | Minimal; bring all supplies including water, food and sturdy footwear |
| Best for | Day trips from Tauranga; camping possible with permission |
About Mayor Island (Tūhua)
Mayor Island, known as Tūhua to Māori, is a collapsed shield volcano rising from the edge of the continental shelf in the Bay of Plenty. The island features a caldera roughly 2.2 by 2.5 kilometres across, formed during a significant explosive eruption thousands of years ago. Its Māori name refers to the abundant obsidian deposits, a volcanic glass prized historically for tools. The island is privately owned and administered by the Tūhua Trust Board on behalf of its beneficiaries, with Te Whānau ā Tauwhao ki Tūhua holding ancestral connections.
The surrounding Tūhua Marine Reserve protects a mix of shallow reefs and deeper waters, established to safeguard marine life from fishing and other impacts. Warm currents support subtropical species alongside temperate fish, creating diverse underwater habitats. On land, the island has been a wildlife refuge since 1953, supporting native birds and providing a pest-free sanctuary environment.
Visitor access is carefully managed to protect the island’s unique values. Landing is permitted only at South East Bay (Opo) after prior arrangement with the Trust Board, and visitors must follow quarantine rules. Day tours organised through local charter operators allow hiking on established walks and snorkeling without overnight stays, though camping can be arranged with permission for longer visits.
Getting to Mayor Island and Access
Reaching Tūhua requires a scenic boat journey from Tauranga or Mount Maunganui, typically 1.5 to 2 hours depending on conditions. Several private charter operators offer day excursions that may include time on the island for hiking or snorkeling. All landings must be pre-booked through the Tūhua Trust Board, and a caretaker is usually present. Weather and sea conditions can change quickly, so operators monitor forecasts closely and trips may be cancelled for safety.
Volcanic Hiking and Walks
Tūhua offers a network of walking tracks through forest and across volcanic terrain, ranging from easy to intermediate difficulty. Trails provide views of the caldera, coastal cliffs and the Bay of Plenty. Hikers can observe obsidian outcrops and the island’s rugged geology shaped by past eruptions. The walks are managed to protect the wildlife refuge values, and visitors are asked to stay on marked paths.
Snorkeling in the Tūhua Marine Reserve
The marine reserve surrounding the island is renowned for snorkeling and diving, with shallow rock platforms such as at Ōrongatea Bay suitable for exploration. Warm currents bring subtropical fish including schools of kingfish and pink and blue maomao, along with rays and other species. Kelp forests and reef structures support rich biodiversity, and underwater hot springs add interest at some sites. Snorkelers should take care not to damage marine life or anchor in sensitive areas.
Wildlife and Conservation
As a wildlife refuge, Tūhua supports native seabirds and forest birds in a pest-free setting. Introduced species such as orange-fronted parakeets have also been released to bolster populations. Conservation rules prohibit disturbing wildlife, removing plants or animals, and require visitors to follow strict biosecurity measures. The marine reserve complements these efforts by protecting underwater ecosystems from fishing pressure.
What Visitors Often Say
Visitors describe the boat trip as scenic and the island’s volcanic landscapes as striking, with clear water offering rewarding snorkeling among abundant fish. Many note the need for advance booking and good preparation for limited facilities.
Reviewers appreciate the sense of remoteness and the opportunity to see native birds and dramatic coastal views, while emphasising respect for the private ownership and conservation rules during their visit.
Where to Learn More
Department of Conservation – Tūhua (Mayor Island): Official information on access, walks and the wildlife refuge.
Department of Conservation – Tūhua Marine Reserve: Details on snorkeling, diving and marine protection rules.
Tūhua Brochure (PDF): Visitor information including booking contacts and maps.
Frequently Asked Questions
What is the best time to visit Mayor Island?
Summer months generally offer calmer seas and warmer conditions for boating and snorkeling, though operators check forecasts year-round and trips can run when weather permits.
How do I book a day tour or landing on Tūhua?
Contact the Tūhua Trust Board in advance for landing permission and arrange boat transport through local charter operators based in Tauranga or Mount Maunganui.
Is camping available on the island?
Limited camping is possible with prior approval from the Trust Board; most visitors opt for day trips and return to Tauranga the same day.
What marine life can I expect while snorkeling?
Expect schools of kingfish and maomao, rays and other fish in the clear waters of the marine reserve, with opportunities at shallow reefs and drop-offs.
Are there fees to visit the marine reserve or island?
Charter fees apply for boat transport; landing or camping may involve additional arrangements or fees through the Trust Board.
Can I bring my own snorkeling gear?
Yes, visitors are welcome to bring personal snorkeling equipment provided it is in good condition and used responsibly within the reserve.
Are guided hiking options available?
Some charter operators provide guided or informative visits that include time for self-guided or accompanied walks on the island’s tracks.
What should I bring for a day trip?
Sturdy footwear, sunscreen, water, food, a hat and any personal snorkeling gear; facilities on the island are minimal and all rubbish must be taken away.
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