The Maui ’s dolphin   universe has spend to an all - time low , with fewer than 50 leave in New Zealand . research worker are therefore   calling for much - needed pressing activity to keep the reality ’s rarest and smallest dolphin from disappearing off the look of the Earth . Unless there are significant exploit to protect these dolphins , they could become nonextant within 15 years .

The Maui ’s dolphin   is   a subspecies of Hector ’s dolphinfish   found along the west coast of the North Island , New Zealand . These dolphins are ‘ critically endangered ’ and their population size has been declining since the seventies . Researchersestimatethat the rate of decline from 1970 to 2009 is a harrowing 93 % . Dr. Barbara Maas , NABU   International ’s   capitulum of endangered species preservation , tellsBBC newsthat their extinguishing is '' a matter of when , not if " unless the government implements far - reaching preventative measures to protect the mahimahi .

Maui ’s dolphins are specially vulnerable to human - induce deaths as they live within a few mile of the sea-coast . Many become   entangle in sportfishing gear , such as trawlers and typeset gauze ,   and pass as a result . The study , which will be presented to thescientific committee of the International Whaling Commission , figure that five Maui ’s dolphin   are kill each year   by sportfishing nets .   research worker havepreviously criticizedthe New Zealand governance for not target effective restriction on the use of set gillnets , and rather call for full security across the dolphin ’s range .

" These young number are a loud wakeup call : New Zealand has to give up   its current stance , which localize the stake of the fishing industry above biodiversity preservation , and finally protect the dolphin ' habitat from harmful sportfishing meshwork , seismic air rifle blasts and oil and gas descent , " Maas tally .

These dolphins , which can live up to 20 years , have a shorter lifespan than other dolphin metal money . Their populations are obtuse to increase as females bring forth one calf every 2 to   4 year . New Zealand Department of Conservationsuggests that a universe of 55   Maui ’s dolphins may only increase by one individual a class , meaning it will take a foresighted clip to find from such a considerable shortness .