Serpulorbis zelandicus.
Underwater Photography of the gastropod Serpulorbis zelandicus by New Zealand Photojournalist and Underwater Photographer Richard Robinson.
Class: Gastropoda.
Subclass: Caenogastropoda.
Order: Littorinimorpha .
Superfamily: Vermetoidea .
Family: Vermetidae.
Habitat: Rocky Reefs.
Distribution: Endemic; North Eastern North Island and Island Bay Wellington.
Occurrence: Common.