Bay of Islands Dolphin Sanctuary: Boat Days for Groups

The Bay of Islands is often the first coastal stop on a North Island programme, and a day on the water is usually the reason groups go. Our New Zealand team explains the July 2026 change in its Bay of Islands sanctuary rules briefing. This page is the short version for agencies and tour operators across Asia that sell New Zealand with our other destinations.

What Are the Rules in the Sanctuary?

The Bay of Islands is a marine mammal sanctuary, Te Pēwhairangi, managed by the Department of Conservation (DOC):

• A 300 m distance for boats. Every vessel keeps 300 m from dolphins, whales and seals.
• No one in the water nearby. Swimming, snorkelling or diving within 300 m of a marine mammal is not allowed.
• The boat stops if they approach. When an animal comes within 300 m, the skipper stops until it moves away.
• One distance for every species. Clients do not need to tell a dolphin from a seal. The rule is always 300 m.

What Changed on 4 July 2026?

• The 5-knot safe zones were removed. These two zones covered about 7% of the sanctuary and slowed every boat inside them.
• The reason. DOC said removing them lets it focus compliance and enforcement on the rules around the dolphins themselves.
• The process. Public consultation ran from 2 to 30 March 2026, and the change took effect on 4 July 2026 by notice in the New Zealand Gazette.
• What did not change. The 300 m rules for people and boats stay in force.

How Should Agents Sell a Bay of Islands Boat Day?

• Sell the bay, not the dolphins. Islands, coves and the coastline are the product. A dolphin sighting is a bonus we never promise.
• Do not sell swimming with dolphins. It is not possible in the sanctuary, so it should not appear in any programme or sales copy.
• Allow time for stops. A boat that stops for dolphins can run late, so we keep slack before lunch and the coach transfer.
• Brief free time on the water. Clients who hire kayaks or paddle boards must keep 300 m away too.
• Plan each market on its own rules. Wildlife rules differ in every country we cover, so we quote each programme on its own terms.

Frequently Asked Questions

Can tour groups swim with dolphins in the Bay of Islands?

No. Nobody may be in the water within 300 m of a marine mammal in the sanctuary, so Explera DMC does not sell swim-with-dolphins trips there.

How close can a tour boat go to dolphins?

Boats keep 300 m away. If a dolphin comes closer, the boat stops until it is more than 300 m away again.

What changed in the sanctuary in July 2026?

DOC removed the two 5-knot safe zones from 4 July 2026. The 300 m rules for people and boats did not change.

Will a group see dolphins on a Bay of Islands cruise?

Not always. Dolphins are wild animals, so we plan and sell the day around the bay and its islands.

Sources

• Marine mammal sanctuary rules change to improve dolphin protection in Te Pēwhairangi Bay of Islands, Department of Conservation, 3 July 2026
• Bay of Islands Marine Mammal Sanctuary rules consultation, Department of Conservation

Where Explera Fits

Our New Zealand team plans Bay of Islands days with coaches, boat operators and guides, and quotes them inside the full programme.

Write to b2b@explera.co.nz or message +66 93 656 8090 on WhatsApp. Explera DMC is IATA TIDS-registered (96215733) and an ASTA member (900408341).