Moutere Hauriri (Bounty Islands)

Moutere Hauriri (Bounty Islands) Marine Reserve protects about 104,626 hectares (1,046 square kilometres) of subantarctic ocean surrounding the tiny, remote Bounty Islands, roughly 670 km east-southeast of New Zealand's South Island. ^[1] Established in 2014 and managed by the Department of Conservation, it is one of New Zealand's largest marine reserves, encircling a cluster of bare granite islets and rocks that form part of the New Zealand Subantarctic Islands UNESCO World Heritage Area. The Bounty Islands are among the most isolated and inhospitable land in the New Zealand region, almost devoid of soil and vegetation yet crowded with breeding seabirds and seals. The reserve safeguards the cold, productive waters that sustain these dense wildlife colonies in one of the most pristine and least-visited marine environments on the planet.

Despite their tiny land area, the Bounty Islands host extraordinary concentrations of marine wildlife. The islands are the principal breeding ground of the Salvin's albatross, with an estimated 98.5% of the world's population nesting on the bare rock, alongside erect-crested penguins that breed in large numbers, fulmar prions, cape petrels and other seabirds. ^[1] The endemic Bounty Islands shag (Leucocarbo ranfurlyi) breeds nowhere else in the world, with a total population estimated at fewer than 2,000 individuals. ^[2] New Zealand fur seals pack the limited shoreline to breed and haul out. The surrounding cold seas are rich in fish, squid and krill that feed this dense assembly of top predators, making the reserve a critically important node in the subantarctic ocean ecosystem.

The Bounty Islands are almost entirely barren granite, scoured by salt spray, wind and seabird guano, with virtually no soil or flowering plants and only a sparse cover of algae and lichens clinging to the rock above the waterline. ^[1] The reserve's true plant life is marine: the islands' submerged rocky coasts support cold-water seaweeds, including tough bull kelp and other brown and red algae adapted to constant Southern Ocean swell. These kelp and algal communities provide shelter and food for fish and invertebrates around the islands, forming productive nearshore ecosystems that contrast sharply with the lifeless appearance of the bare rock above the sea.

The Bounty Islands are the exposed tops of a granite massif, an unusually ancient and hard rock for the New Zealand region, rising from the sea as a scatter of low, weather-beaten islets and rocks with almost no soil cover. ^[1] Their granite has been smoothed and shaped by relentless wind, waves and salt spray over long periods. The marine reserve's seabed reflects this granite foundation, with rocky reefs and submarine slopes surrounding the islands amid the deep waters of the surrounding ocean. The stark, treeless granite landscape, polished by the elements and stained by seabird colonies, gives the Bounty Islands a uniquely austere character among New Zealand's subantarctic islands.

The Bounty Islands lie in the cold, windswept subantarctic latitudes and experience a harsh, exposed oceanic climate. Conditions are persistently cool, cloudy, wet and extremely windy, with frequent gales and high seas generated by the Southern Ocean. Temperatures stay low and stable through the year, and the islands are almost constantly battered by spray and swell, which helps explain their barren, soil-free surfaces. Sea temperatures remain cold year-round, supporting a distinctly subantarctic marine community. The relentless wind, storms and cold, nutrient-rich currents drive the high ocean productivity that sustains the dense seabird and seal colonies for which the reserve is renowned.

The Bounty Islands were sighted in 1788 by Captain William Bligh, who named them after his ship, HMS Bounty, shortly before its famous mutiny. ^[1] The islands' inhospitable nature meant they were never settled, but their abundant fur seals drew sealing gangs in the early nineteenth century, who killed large numbers before the trade collapsed. Since then human contact has been minimal, limited to occasional scientific expeditions and brief landings under permit. With no soil, fresh water or shelter, the islands have remained free of permanent human presence, leaving their wildlife colonies and marine surroundings among the least modified by people anywhere in the New Zealand region.

The Moutere Hauriri (Bounty Islands) Marine Reserve was established in 2014, extending protection from the islands — already a national nature reserve and World Heritage site — into the surrounding ocean. ^[1] Its creation safeguarded the foraging and breeding waters of globally significant populations of Salvin's albatross, erect-crested penguins and the endemic Bounty Islands shag (Leucocarbo ranfurlyi), together with the breeding fur seals. The reserve reflects New Zealand's strategy of protecting the marine environments around its subantarctic islands as well as the land. The Department of Conservation manages it under strict, fully protected status, with access tightly restricted to preserve the area's near-pristine condition.

The reserve is one of the most remote and rarely visited places in the New Zealand region, accessible only by sea and almost never landed upon because of the islands' steep, seabird-covered rocks and exposed conditions. The few visitors who reach the area do so on occasional expedition cruises to the subantarctic islands, viewing the spectacle from the ship: granite islets packed with nesting Salvin's albatross and erect-crested penguins, and shorelines crowded with fur seals. There are no trails, landings or facilities; the 'attraction' is the rare experience of witnessing one of the world's densest and most pristine subantarctic wildlife colonies from the water.

There are no facilities, harbours or landing sites at the Bounty Islands, and the nearest land of any size is hundreds of kilometres away. ^[1] Access requires a Department of Conservation permit and is effectively limited to licensed expedition vessels on multi-day subantarctic voyages from southern New Zealand ports such as Bluff, usually only in the summer months. Landings are virtually impossible and strongly discouraged, both for safety and to avoid disturbing the wildlife and breaching strict biosecurity rules. The extreme remoteness, severe weather and absence of any infrastructure mean the reserve is experienced almost entirely from the deck of a ship under careful management.

The reserve provides full no-take protection to the waters around one of the world's most important subantarctic seabird and seal breeding sites, complementing the strict protection of the islands themselves. ^[1] Conservation priorities include safeguarding the globally significant Salvin's albatross and erect-crested penguin populations and the endemic Bounty Islands shag from disturbance and the impacts of fishing in surrounding seas. The islands' isolation and the absence of introduced mammals have kept them exceptionally intact, supported by rigorous biosecurity and restricted access. Climate change and the wider effects of commercial fishing remain the principal concerns, and the reserve forms a key part of New Zealand's network protecting its irreplaceable subantarctic marine ecosystems.