Protecting the Hauraki Gulf Marine Park
© Darryl Torckler

Protecting the Hauraki Gulf Marine Park

Marine biodiversity in the Hauraki Gulf / Tīkapa Moana is critically important to Aotearoa New Zealand, but is in a state of sustained and dramatic decline

The Hauraki Gulf / Tīkapa Moana is a taonga for Aotearoa, distinguished by its unique features and values. It is one of the most heavily utilised coastal areas in Aotearoa New Zealand and has significant historical and cultural importance for tangata whenua, and a long history of commercial and recreational use.

Climate change and human activity – both on land and at sea – has taken an incredible toll on the health and mauri of the Gulf, leaving habitats and biodiversity in the Hauraki Gulf in a state of dramatic decline. In order to safeguard the Gulf for future generations, we must allow its marine ecosystems and resident native biodiversity to recover and build resilience.

© Darryl Torckler/WWF

Protecting the Gulf for future generations

The Hauraki Gulf is on the brink of ecological collapse. Overfishing, habitat loss, pollution, sedimentation, and the effects of poorly planned urban development have led to a 57 percent decline in key fish stocks, a 67 percent decline in seabirds, and a 97 percent decline in whales and dolphins in the Gulf. Snapper and crayfish populations are functionally extinct in some areas. 

The creation of new marine protected areas in the Hauraki Gulf is essential to protecting and restoring its environment, as well as benefitting the communities and industries that rely on the Gulf for their livelihoods. 

The Hauraki Gulf/Tīkapa Moana Marine Protection Act will come into force before the end of 2025. This new legislation extends two marine reserves and creates five seafloor protection areas, and 12 high protection areas in the Hauraki Gulf. 

The Bill is the result of years of collaborative work between tangata whenua, environmental groups, commercial and recreational fishers and others involved in the SeaChange process that began in 2013.

WWF has long advocated for expanded protections in the Gulf to turn the tide on nature loss, and this new legislation is an important step forward.

During the Act's passage through Parliament, the Government made a decision to amend the Bill to allow a type of fishing known as ring-netting to take place in two of the new high protection areas - zones explicitly designed to exclude both commercial and recreational fishing and provide a safe haven for marine life to recover. 

WWF-New Zealand worked swiftly to launch an extensive campaign calling on the Government to reverse its decision. More than 32,000 people signed our open letter to the Prime Minister and nearly 10,000 people used our email tool to directly contact decision-makers voicing their concern.

Our fight to continue protecting this treasured place on Auckland’s doorstep is far from over.

Mobile bottom contact fishing

Unsustainable fishing is one of the biggest threats to the Hauraki Gulf. The Hauraki Gulf Fisheries Plan seeks to improve the sustainability of fisheries management in the Gulf, including embracing an ecosystem-based approach. However there are concerns regarding the potential for mobile bottom contact fishing methods to continue.

Mobile bottom contact fishing methods like bottom trawling, scallop dredging and Danish seining are destructive fishing methods that have been taking place in the Hauraki Gulf for decades. These indiscriminate fishing methods bulldoze everything in their path and releases tonnes of carbon dioxide in the process. Harmful fishing methods have significantly degraded the benthic habitats that are crucial to the health of the Gulf.

There is currently a proposal aimed at reducing the use of these methods by excluding them from the Hauraki Gulf, except within defined areas called bottom fishing access zones or trawl corridors. The science clear. Mobile bottom contact fishing is detrimental to biodiversity, benthic habitats and the environment and continuing the use of these methods in designated areas is not good enough.

With climate change impacts looming, we can not afford to let these methods continue. WWF alongside our partners in the Hauraki Gulf Alliance have been advocating for a complete ban of these harmful fishing methods in the Hauraki Gulf to allow marine ecosystems and resident native biodiversity to recover and build resilience. 

In June 2025, Oceans and Fisheries Minister Shane Jones confirmed the current Government will not be progressing any closures of the Hauraki Gulf/Tīkapa Moana to bottom trawling and will take no steps to address this issue this term.

Find out more

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Hauraki Gulf

HAURAKI GULF SUBMISSIONS

WWF-New Zealand submissions to Parliament and Fisheries New Zealand on proposed changes to the Hauraki Gulf

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Blue maomao

LONG AWAITED ACTION TO RESTORE TĪKAPA MOANA

WWF-New Zealand welcomes the announcement of special legislation to turn the tide on nature loss in the Hauraki Gulf / Tīkapa Moana through the creation of new marine protection areas (MPAs), alongside the development of a bespoke regional Fisheries Plan

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Marine Protected Area

HAURAKI GULF PETITION PRESENTED

Hauraki Gulf Alliance petitions Parliament to protect the Hauraki Gulf Marine Park from destructive fishing practices