North east coast of North Island. Also eastern Australia and Japan
References and Publications
Morley, M.S., Hayward, B.W. 2015 Intertidal records of 'sea slugs' (nudibranchs and allied opisthobranch gastropods) from northern North Island, New Zealand, Records of the Auckland Institute and Museum, 50 (p.74)
Rudman, W.B. 2004 Further species of the opisthobranch genus Okenia (Nudibranchia : Goniodorididae) from the Indo-West Pacific, Zootaxa, 695 (p.49)
Willan, R.C., Morton, J.E. 1984 Opisthobranchia, Marine Molluscs, University of Auckland, Leigh Marine Laboratory, 2 (p.91)
Powell, A.W.B. 1979New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland (p.286)
Key to Geographical Ranges
The symbols K.A.C.F.M.An. are used to indicate the geographical range of the species.
They have been adopted to give an approxomation of the range of each species within New Zealand.
Aupourian - Kaipara Harbour, north around North Cape, encompassing the Three Kings Islands and south to East Cape
Cookian - Lower North Island and the northern part of the South Island