Biodiversity of the Kaikōura region

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Biodiversity of the Kaikōura region

The Kaikōura district in New Zealand is home to a wide variety of life on land and in the sea. The landscape ranges from a rugged coastline to high mountains, shaped by ongoing fault activity and earthquakes. The waters offshore are especially rich because two ocean currents meet there and a deep submarine canyon brings up nutrients. The Kaikōura Canyon is a key hotspot, feeding a lot of seabirds and marine mammals just off the coast.

Tourism is a major part of the local economy, with many visitors coming to see the region’s wildlife. Whale watching and swimming with dolphins are popular activities, and the name Kaikōura itself means “meal of crayfish,” reflecting the long link with marine life.

History and places to protect nature
- The area has a long history, including early Maori settlements such as the Wairau Bar around 1288–1300 CE.
- European settlement brought land clearing and recurring fires from the 1860s, which changed the native landscapes.
- Important protected areas include Kaikōura Conservation Park, KaWhataTu o Rakihouia (Seaward Kaikōura Range) and the Mount Uwerau Nature Reserve. Kowhai Bush and Blue Duck Scientific Reserve protect important forest and bird habitats, and Ō Tamakura Historic Reserve preserves coastal forest land.
- Local groups helped create strong marine protection through the Kaikōura (Te Tai o Marokura) Marine Management Act (2014). This placed marine reserves, sanctuaries and traditional harvesting areas under protection and set new fishing rules.

Marine protection and life
- The Hikurangi Marine Reserve, south of Kaikōura, covers a large area and includes part of the Kaikōura Canyon. It is a no-fishing zone and helps protect deep-water life.
- The Te Rohe o Te Whānau Puha Whale Sanctuary extends well beyond the coast to protect marine mammals over a large area.
- A wide range of marine mammals can be seen in Kaikōura, including whales, dolphins and New Zealand fur seals. Sperm whales are a hallmark of the area, and humpback whales visit mainly in June and July. Dolphins such as dusky and Hector’s dolphins are common, and orca can be seen from December to March.

Birds and other wildlife
- Kaikōura is famous for seabirds and has about 30 breeding species and many more that visit occasionally. Seabirds include albatrosses and petrels, as well as shags and gannets commonly seen along the coast.
- The Hutton’s shearwater, an endangered seabird, breeds only in the Seaward Kaikōura Range at high elevations (1200–1800 m). Two main alpine breeding colonies remain, with other colonies lost to factors like feral pigs. In 2005, an artificial breeding site was created on the Kaikōura Peninsula to help protect this species. Night-time flights can be disoriented by bright lights, so work to reduce light pollution started in 2020. In 2024, Kaikōura was accredited as a Dark Sky Sanctuary to protect the birds and the night skies.
- The red-billed gull, another native bird, has a large colony on the Kaikōura Peninsula, but the local population has declined, while predator control elsewhere has helped increase numbers at Otago Peninsula.
- The little penguin (kororā) also lives along the coast and faces risks from fishing nets, vehicles, and predators when on land. The banded dotterel (pohowera), a shorebird that nests on stony beaches, is nationally vulnerable; a community plan is in place to protect its South Bay habitat.
- The Kaikōura Important Bird Area covers 308 square kilometers and includes two inland breeding sites with large populations of Hutton’s shearwaters.

Plants and habitats
- The region still has remnants of native forests and a variety of plant communities. In the coastal Seaward Kaikōura Range you can find coastal scrub-hardwood forests with trees such as mahoe, tītoki and ngaio, and a shrub layer dominated by kawakawa.
- Black beech forest occurs in small areas on the eastern side of the Inland Kaikōura Range, at higher elevations (about 600–1,400 meters).
- Higher elevations host species like Matagouri and other scrub plants that thrive after disturbance from fire.
- The Clarence River catchment contains Hector’s tree daisy, one of the notable threatened plants, and the region also holds some of the country’s largest populations of these rare plants.
- The Kaikōura giant wētā is a subalpine insect found in elevated, rocky areas between 150 and 1,500 meters; in recent years its range has shrunk to less than ten percent of its former extent.

People, landscape and conservation
- The region’s landscapes include limestone hills, floodplains and dramatic cliffs, making it one of New Zealand’s most varied natural areas.
- Fire and land use have shaped the forests and scrub over time, but many native ecosystems remain and are protected in reserves and marine areas.
- The community, scientists and conservation groups continue to monitor wildlife, run breeding programs, protect coastal birds, and promote responsible tourism that respects wildlife and habitats.

Kaikōura remains a place of rich life both above and below the water, supported by strong protection, local stewardship, and a community that values its unique wildlife.