Marine mammals however are abundant, with almost half the world's cetaceans (whales, dolphins, and porpoises) and large numbers of fur seals reported in New Zealand waters.
Bagaimanapun, mamalia laut terdapat cukup banyak, dengan hampir setengah cetacea dunia (paus, lumba-lumba, dan porpoise) dan banyak pinniped dilaporkan terdapat di perairan Selandia Baru.