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Dolphin expert Gemma McGrath.
Photo: Supplied/ Jono More
The data was analysed by Otago University s Gemma McGrath for her masters thesis. She said conducting a survey was valuable as it gave a picture of the dolphins baseline state compared to the population now, and the pattern of decline could offer clues as to how they could recover. It s actually quite amazing; they were the most abundant of all our dolphin species that we see in close, once upon a time. It s hard for us to imagine what it was like, but there are scientists quoting that you wouldn t go anywhere around Aotearoa on a boat, without seeing Hector s and Māui dolphins.