High hopes: drones join fight to save New Zealand’s rarest dolphin

Numbers of Mui dolphins have been slashed by fishing and other threats, with only an estimated 63 adults remaining in the wild

The lives of New Zealand's smallest and most endangered dolphins will soon become less elusive as drones take to the skies to study their location, habits and numbers.

Mui dolphins are a subspecies of the Hector's dolphin and are one of the rarest dolphins in the world, living in a small stretch of ocean off the west coast of New Zealand's North Island.