Qualifier(s): Recovering, Secure Overseas, Human Induced; Note(s): New Zealand and subantarctic populations may be separate and require separate management - research underway. Sightings around mainland New Zealand fluctuate annually.

Qualifier(s): Conservation Dependent; Note(s): 3 genetically distinct populations. Total population estimate of appro 7,000 equates to adult population of approx 3,500. Nationally vulnerable to Nationally endangered due to improved understanding of historic decline.

Qualifier(s): Secure Overseas, Data Poor; Note(s): Precautionary approach taken in this listing. Considerable uncertainty about NZ population size. Canadian populations regionally threatened.

Qualifier(s): Secure Overseas?, Human Induced; Note(s): Australasian population declining rapidly, but world-wide population roughly stable. Total NZ population 250-260 (<10 on Campbell Is., rest on Antipodes Is.). Down from c. 420 in 1990s.. Threatened Overseas qualifier changed to Secure Overseas?, as world population roughly stable despite Australasian and Indian Ocean declines.

Qualifier(s): Conservation Dependent, Human Induced; Note(s): Population approximately 100.

Qualifier(s): Secure Overseas, Data Poor; Note(s): Recent molecular analysis suggests that there are 3 species worldwide and geographic structure within species. Nomenclature still uncertain. In NZ confined to NE coast between East Cape and North Cape, within 10 nautical miles of shore (survey extended to 25 nm, but not seen further out); one stranding on Portland Island. Debate about extent of isolation of individuals sighted in NE NZ. Precautionary approach taken in this listing. Mortality due to ship strike and entanglement occurring several times per year. NZ population size estimated to be around 100, but considerable uncertainty about this.. One Location qualifier removed and Data Poor added.