Endemic to New Zealand waters, this species is found on the west and east coasts of South Island, and only in a very small area off the west coast of North Island (6). Following surveys carried out in 1984 to 1985 the total population was estimated at 3,000 to 4,000 individuals, only around 2,000 of which were mature (1).
![]() | View a distribution map for this species at UNEP World Conservation Monitoring Centre. |