- DISCOVERY Yacht Neo
Oceanic Manta Ray Surveys in the Hauraki Gulf
- January 6 - 7, 2026
- Hauraki Gulf, New Zealand
Project Overview
This scientist-led expedition builds on the ongoing Oceanic Manta Ray Survey program led by Manta Watch New Zealand, which aims to improve understanding of oceanic manta ray presence, movement, and population dynamics within the Hauraki Gulf. Through visual surveys, photographic identification, and targeted biopsy sampling, the project works to identify individual mantas, track their movements, and support long-term conservation efforts for this highly mobile and understudied species in New Zealand waters.
Application
Data collected during this expedition contributes to Manta Watch New Zealand’s growing database of oceanic manta ray sightings and individual identifications. Each encounter helps refine understanding of manta distribution and seasonal presence in the Hauraki Gulf, while biopsy sampling supports genetic and health studies where possible. By providing vessel support for scientist-led fieldwork, SeaKeepers continues to play a key role in enabling meaningful marine science and conservation efforts in New Zealand waters.
Expedition Summary
From 6–7 January, SeaKeepers South Pacific joined Manta Watch New Zealand aboard DISCOVERY Yacht Neo for a two-day scientist-led expedition in the Hauraki Gulf. Melissa White, Director of South Pacific, participated alongside the Manta Watch team as the vessel surveyed key offshore areas known to provide suitable conditions for oceanic manta rays. The expedition began off Great Barrier Island (Aotea) and continued south through to Great Mercury Island (Ahuahu), covering a broad stretch of the Gulf.
Across the expedition, the team completed a 9-hour visual survey, covering approximately 49 nautical miles. The primary objectives were to locate oceanic manta rays, document individuals through photographic identification, and attempt biopsy sampling where conditions allowed. During the survey, the team encountered eight oceanic manta rays, successfully obtaining six individual identifications, contributing valuable records to Manta Watch New Zealand’s database.
In addition to manta sightings, the expedition also recorded encounters with several pods of bottlenose dolphins and multiple Bryde’s whales, reflecting the high level of marine productivity within the Hauraki Gulf and reinforcing the importance of continued monitoring in the region.
Location
Hauraki Gulf, New Zealand
Duration of Project
The 1000 Mermaids Artificial Reef Project was officially launched in August 2019, with this particular Hollywood offshore site deployed approximately a year and a half ago.
Leadership
Research Team
Lydia Green- Founder of Manta Watch New Zealand
Sanaa Nair- The University of Auckland Masters Student
Partner Sites
Photo Gallery
