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Hector's and Maui's dolphins

WWF briefing for politicians on Hector's and Maui's dolphin

Dolphin briefing for politicians

New Zealanders have made it clear they want Hector's and Maui's dolphins saved. We are asking politicians to use that mandate and take action now. Read more
One of an estimated 110 to 150 Hector's dolphins that die in commercial set nets every year

...an overview

Hector’s and Maui’s dolphins are New Zealand’s national treasures – these beautiful, tiny marine mammals only live in New Zealand’s coastal waters – nowhere else in the world.

The dolphins are among the world’s smallest cetaceans, easily recognised by their distinctive dorsal fin shaped like a Mickey Mouse ear.
Hector’s dolphins (Cephalorhynchus hectori hectori) are found only around New Zealand’s South Island. A subspecies, the Maui’s dolphin (Cephalorhynchus hectori maui), lives in shallow coastal waters along the North Island’s western shores.

The species name covering both Hector’s and Maui’s is Cephalorhynchus hectori.

Dwindling numbers

What makes Hector’s and Maui’s dolphins even more special is that today very few survive.

Both are classified as endangered. Maui’s dolphins are the world’s most rare marine cetacean – their entire population is estimated at just 111 individuals – on the very edge of extinction.

Scientists estimate that more than 26,000 Hector’s dolphins lived around New Zealand’s shores in the 1970s. Today, it is thought that just 7270 remain – less than one-third of the 1970s’ population.


Under threat

The biggest threats to Hector’s and Maui’s are set net and trawl fishing.

A 2008 report by the National Institute of Water and Atmospheric Research (NIWA) estimates that 110 to 150 Hector's and Maui's dolphins die in commercial set nets every year.

They are also harmed by boat strikes, pollution and coastal developments which degrade their habitat, and future threats may arise from climate change, overfishing and aquaculture.



Children of Cardinal McKeefry School in 2007 helping WWF ask the New Zealand Government to save dolphins from extinction

Children of Cardinal McKeefry School in 2007 helping WWF ask the New Zealand Government to save dolphins from extinction

WWF-New Zealand's campaign

WWF is campaigning for a future where Hector's and Maui's dolphins are no longer threatened with extinction, but thriving throughout their natural range.

Find out more about WWF-New Zealand’s campaign to help protect Hector’s and Maui’s dolphins, and the people involved.

Report any sightings of Maui’s dolphins. The more we learn about where these dolphins live, the better we will be able to protect them.

For more information, read WWF-New Zealand’s campaign fact sheets about Maui’s and Hector’s dolphins.

Hector's dolphin footage

Hector's dolphin footage used by kind permission of Dr Liz Slooten, who retains the copyright.  No unauthorised use is permitted.