The planet's smallest dolphin, which typically measures just a meter and a half in length, is now on the verge of extinction, with only 55 mature individuals alive in the world, according to a new survey on their population. The child-sized Maui's dolphin, also endearingly called the "popoto", is a subspecies of the Hector's dolphin and can only be found along the west coast of New Zealand's North Island.
