Nudibranch Domain

Images and Information about Sea Slugs from around the world

This is a site for aficionados of nudibranchs and their sea slug relatives, who want more than pretty pictures. At the launch the site is populated with an image of each species sighted on the Sunshine Coast, southern Queensland, Australia by The Sunshine Coast Sea Slug Survey Team.

As the site develops, information, more images and references about each of the species will be added providing a helpful and valuable resource. The many hundreds of Indo-Pacific species, recorded by The Team when overseas, will also be regularly added significantly broadening the resource.

There are three ways to get your hit of Sea Slug knowledge.

Species Profile features information about specific sea slugs. Navigate, Identify and Learn about species via the lists. Notification of the latest expanded entry will appear below on the Home Page.
NudiNote features specific topics that can be sourced via its Archive. Notification of the latest entry will appear below on the Home Page.
Understanding Nudibranchs is a book on general sea slug biology and behaviour that will be posted in parts, as they are completed.

Home to The Sea Slug Survey of the Sunshine Coast

The Sea Slug Snippet

Jorunna rubescens (Bergh,1876)

Elongate discodorid with high profile, high gill pocket and pointed “snout”. White background with thin brown longitudinal lines and elongate yellow spots. Brown to “snout”, rhinophores & pocket rims, gills & pocket rim and tail.

Tulamben, Bali, Indonesia.

Latest NudiNote

NudiNotes are interesting and informative short articles about sea slugs and their behaviour.

Lookalikes to Look Out for – No. 3. – Ceratosoma trilobatum, Ceratosoma tenue & Ceratosoma gracillimum

Ceratosoma trilobatum - Ceratosoma tenue - Ceratosoma gracillimum In No. 3 of this series there are actually 3 species to compare. These 3 are quite often confused and there are good reasons for that confusion. All were described not last century but the century...

VEXATIOUS VARIABILITY – No. 3 Goniobranchus splendidus

VEXATIOUS VARIABILITY - No. 3 Goniobranchus splendidus Goniobranchus splendidus is a common and conspicuous species of nudibranch, though endemic to the east coast of Australia, from southern New South Wales to central Queensland. It exhibits variation in...

MORE COLONIAL CONSUMERS – Sea Slugs that prey on Ascidians, Bryozoans and Entoprocts

More Colonial Consumers Sea Slugs that graze upon Ascidians, Bryozoans and Entoprocts It’s been mentioned before that the feeding preferences of sea slugs, across the entire group, encompass an extremely diverse range of food types, but conversely, each species...

VEXATIOUS VARIABILITY – No. 2 Goniobranchus geometricus

VEXATIOUS VARIABILITY - No. 2 Goniobranchus geometricus Goniobranchus geometricus, to the uninitiated, can appear very much like a phyllidiid nudibranch if the gill is not displayed - all black and white and lumpy. However there are, from time to time, other...

VEXATIOUS VARIABILITY – No. 1 Hypselodoris jacksoni

VEXATIOUS VARIABILITY - No. 1 Hypselodoris jacksoni There are a number of common species of nudibranch that can exhibit a variability of presentation. These differences can sometimes be put down to geographical location but more than often, not necessarily so. At...

THE STING’S THE THING – Sea Slug Predators of Anemones and Hydroids

“The Sting’s the Thing” Sea Slug Predators of Anemones and Hydroids Have you ever inadvertently brushed past a stinging hydroid during a dive and some small part of your skin, being exposed, receives a searing sting? Or perhaps you have been enjoying the surf and a...

PHYLLIDIID SUCTORIAL FEEDING

Phyllidiid Suctorial Feeding We are occasionally fortunate enough to encounter and record a nudibranch feeding, that is, to actually see that they are feeding, because most often the process is hidden from us beneath them. In those instances, with the sponge-feeders,...

SPONGIVORES – The Sponge Eaters

SPONGIVORES - The Sponge Eaters Sponges (Phylum Porifera) are one of simplest and oldest of multicellular animals. They have the least complex body form of the multicellular animals. Only a few specialist predators are known to be exclusively spongivores, that is, to...

SLUGIVORES – SEA SLUGS THAT PREY ON SEA SLUGS

Slugivores - Sea Slugs That Prey On Sea Slugs The great majority of sea slug species are carnivorous, meaning they prey on animal life rather than plant life. It is often not appreciated that sponges, bryozoans and hydroids etc. although primitive life forms, and...

HITCHIN’ A RIDE ON THE SEA SLUG TRAIN

Hitchin' a Ride on the Sea Slug Train It is often said there is no such thing as a free meal, but what about a free ride to collect your meal? One sees sea slugs on many sessile invertebrates either feeding or traversing but only occasionally does one see...

The current NudiNote is displayed above. Click to read more or slide to earlier NudiNotes using the arrows which appear when hovering over the image. Alternatively all the NudiNotes may be accessed via the button on the navigation bar above.

Species Profile

All species sighted have been listed on the website with at least one image. There is an ongoing update process whereby information about each species including references and additional images will be added. As each species is enhanced it will be featured here as a temporary notification of that latest update.

Okenia brunneomaculata

Information about this species has been added to its page with references. Additional images have been added to the gallery.

News and Updates

A new page will be coming to the website soon. RECORD OF FINDS will be a chronological archive of the dive and intertidal surveys undertaken by The Team detailing the species finds and circumstances.