speeds through the hauraki gulf waters
- Size
- Length: 150–250 cm, Weight: 70–110 kg
- Lifespan
- 20–30 years
- Diet
- Carnivorous. Feeds on small fish, squid, and crustaceans. Hunts cooperatively in large pods, herding schools of fish against the surface.
- Habitat
- Deep coastal waters and the open ocean throughout New Zealand. High-speed nomads of the Hauraki Gulf, the Bay of Plenty, and the Cook Strait.
- Range
- Worldwide. In New Zealand, found in deep coastal waters and the open ocean throughout the North and South Islands. Most common in the Hauraki Gulf, Bay of Plenty, and Cook Strait.
- Endemism
- Native
- Main Threats
- Entanglement in fishing gear (trawl and set nets). Pollution. Boat strikes. Disturbance from tourism. Bycatch in commercial fisheries.
- Population
- The most numerous dolphin species in New Zealand waters, maintaining large, healthy populations. However, they face ongoing threats from commercial bycatch.
- Conservation Status
- Not Threatened
- Human Risk
- caution
- Handling Note
- native marine mammal, unpredictable in the wild do not approach
- Conservation Note
- Native dolphin; widespread in coastal and offshore waters throughout New Zealand.
- Assessment
- NZTCS Marine Mammals (2024)
- Te Ao Māori
- The aihe is a celebrated symbol of joy, vitality, and communal strength in the Māori worldview. Its presence in coastal waters is frequently recorded in the oral traditions of many iwi. It is often portrayed as a harbinger of abundance. Traditionally, the arrival of a large pod of aihe was a reliable signal to coastal communities. It meant a working sea was nearby. Where the dolphins leaped and churned the water, schools of kahawai or tamure (snapper) were almost certainly to be found. They are seen as social experts. They teach the importance of cooperation and the strength of the collective.
This dolphin arrives not as an individual, but as a kinetic event. While other dolphin species might travel in small, discrete pods, the aihe is famous for forming super-pods. These can number in the hundreds or even thousands. To witness a large group of common dolphins on the move in the Hauraki Gulf is to see the ocean surface transformed. It becomes a boiling landscape of silver, white, and gold. They are the acrobats of the open sea. Built for sustained high-speed travel and dramatic aerial displays. A common dolphin is a master of the bow-ride. It positions itself with surgical precision just inches in front of a moving vessel. It hitches a ride on the pressure wave. This behaviour serves no obvious survival purpose other than efficiency. And, quite possibly, the sheer thrill of the speed.
Physically, the aihe is one of the most strikingly patterned mammals in the world. It is easily distinguished by its unique hourglass colour pattern on its flanks. A dark grey cape dips into a point below the dorsal fin. It is flanked by a creamy-yellow patch towards the head and a light grey patch towards the tail. This intricate camouflage helps break up their silhouette in the dappled light of the upper ocean. It makes them harder for sharks or orca to track from below. They are smaller and more slender than the robust bottlenose. They reach about two metres in length. They have a long, narrow beak and a tall, sickle-shaped dorsal fin. Every aspect of their anatomy is optimised for the chase. They are the endurance athletes of the cetacean world. Capable of maintaining high speeds for kilometres as they pursue schools of pilchards, anchovies, and squid.
The social intelligence of the aihe is most visible during their coordinated hunting manoeuvres. They work together to herd fish into tight bait balls near the surface. They circle the school. They use bubbles and acoustic pulses to disorient their prey. This kettle of activity often attracts thousands of gannets from above. It creates a multi-species feeding frenzy. This is one of the great spectacles of the New Zealand coast. Despite their abundance, the aihe is not immune to the pressures of the modern world. They are frequently caught as bycatch in commercial trawl and set-net fisheries. They are increasingly sensitive to the accumulation of microplastics and toxins in the marine food chain.
In New Zealand, the common dolphin is anything but ordinary. It is the pulse of the outer gulf and the open blue. A creature that defines the energetic mauri of our offshore waters. Because they are so visible and so willing to interact with boats, they are the primary ambassadors for marine conservation for most New Zealanders. To watch a pod of aihe surfing a wake is to understand the ocean as a space of profound freedom. They remind us that the sea is a communal table. As long as the aihe are leaping, the heart of the Pacific is still beating.