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A profound ecological transformation is taking place beneath the surface of Okoromai Bay. Once devastated by unsustainable, strip-mined levels of harvesting, this vital intertidal zone on the Whangaparāoa Peninsula is slowly recovering. The turnaround is driven by the Section 186A temporary harvesting ban and a fiercely protective community.
Imposed under the Fisheries Act in March 2026, the s186A closure legally prohibits the gathering of all shellfish (excluding kina) and intertidal invertebrates. By removing human harvesting pressure, the ban directly protects the vulnerable cockle (tuangi) bed. In 2000, it was estimated that about 27 per cent of the cockle population at Okoromai Bay were breeding adults. In 2025, this number had plummeted to below 8 per cent. The cockle bed was dying.
With Fisheries NZ actively evaluating an expansive, full intertidal closure for the Auckland and Coromandel regions, Okoromai Bay serves as a vital living blueprint. The ecological dividends observed here prove that when human harvesting pressure is removed, nature responds with remarkable resilience.
An intertidal ecosystem recovery is a delicate, multi-tiered process. The removal of thousands of foraging boots has yielded a noticeable structural change: the stabilising of the muddy seabed. The fragile layers of microalgae and surface sediment are no longer trampled, which allows small, burrowing invertebrates to survive, creating the foundational biomass needed to support a complex marine food web.
The dramatic reduction in vehicle traffic, dumped rubbish, and human noise has allowed Okoromai Bay to reclaim its status as a pristine bird haven directly adjacent to the Shakespear Open Sanctuary. With an abundant food source now safely beneath the sand, birdwatchers keeping a respectful distance can spot a thriving variety of species such as:
- Variable Oystercatchers
- White-faced Herons
- New Zealand Dotterels
- Sacred Kingfishers
- Pied Stilt
- Bar-tailed Godwits will soon be arriving at Okoromai Bay to refuel after their epic 12000 km migration from Alaska.
The atmosphere has shifted from a tense, over-exploited resource zone to a tranquil sanctuary for walking, picnicking, and connecting with the natural environment. The Protect Whangaparāoa Rockpools (PWR) group, operating alongside local guardians ‘kaitiaki o te moana Whangaparāoa’ and many passionate locals, have driven the recovery. Through education, signage, and coordinated local beach patrols, these guardians are working alongside the Ngati Manuhiri Settlement Trust and Fisheries NZ to ensure the ban is understood and respected.
Warmer weather brings heightened visitor numbers, and we are preparing for a potential spike in illegal poaching. Organisers are urging the public to remain vigilant, keep an eye on the shorelines, and immediately report any suspicious harvesting activity to the MPI Fisheries hotline on 0800 4 POACHER (0800 476 224).
By Mark Lenton
