Super Sea Slugs

An interactive guide to the sea slugs of New Zealand 

Nudibranchs and other sea slugs are a fascinating and diverse array of marine molluscs that occur all over the world’s oceans, from the surface of the open sea, to shallow continental shores, to the deep sea. The ‘true nudibranchs’ (order Nudibranchia) are well known because they are very colourful, but the other sea slugs are just as attractive, diverse and ecologically remarkable. We hope you will enjoy reading and using this guide to better understand “Super Sea Slugs” in the wild. 

The e-guide starts with a simple introduction to living nudibranchs and other sea slugs, followed by a quick reference morphology (shape) index, species index, individual species pages, and finally, explanations of icons used and a glossary of terms. Each species page illustrates and describes key external features that will enable you to recognise the 35 species covered here and distinguish them from each other.



Ceratosoma amoenum (Cheeseman, 1886), clown nudibranch [Photo: Crispin Middleton, NIWA] 
Janolus ignis Miller & Willan, 1986 [Credit: Crispin Middleton, NIWA) 
Dendrodoris krusensternii (Gray, 1850) [Credit: Crispin Middleton, NIWA]