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Nudibranchs

Aeolid Cladobranchs

Aeolid Cladobranch Nudibranchs



Index

Sea Slugs



Side-Gilled

Side-Gilled Slugs

Umbrella Shells

Umbrella Shells

Head-shield Slugs

Head-shield Slugs

Pteropods

Pteropods

Sap-Sucking Slugs

Sap-Sucking Slugs

Sea Hares

Sea Hares

Nudibranchs



Phanerobranch Dorids

Side-Gilled Slugs

Cryptobranch Discodorids

Cryptobranch Discodorids

Cryptobranch Chromodorids

Cryptobranch Chromodorids

Radula-less Dorids

Radula-less Dorids

Arminids

Arminids

Dendronotids

Sap-Sucking Slugs

Aeolids

Aeolids

This is the group of nudibranchs that have their bodies covered in cerata in many different colours, arrangements and shapes. These are used for breathing, normal gills being absent.

Their food is primarily hydrozoans. The hydrozoans are digested in a way that does not trigger the hydrozoan stinging cells, which these nudibranchs transport internally to their cerata. The stinging cells loose none of stinging power in the process!

Flabellina & Samia



Flabellina and Samia are the two main genera in the Flabellinidae.

Flabellina speicies are brightly coloured. It's primarily a temporate genus, but a number of species are commonly seen on the reefs of SE Asia.

Samia species used to be included in Flabellina, but differences in the rhinophores were sufficiently large to justify creating this genus.

Flabellina exoptata
Flabellina exoptata
Flabellina exoptata
Samia cf. bicolor
Samia cf. bicolor

Fionidae - Eubranchus



Eubranchus are characterised by their swollen cerata, which in some species are transparent, so that the branched digestive gland can be seen.

Eubranchus sp.
Eubranchus sp.
Eubranchus?
Eubranchus ?
Eubranchus sp. 23 (Gosliner et al. 2018)
ubranchus sp. 23 (Gosliner et al. 2018)

Fionidae - Tenellia



The cerata here are generally arranged in more or less distinct rows.

A coral feeding Tenellia sp with eggs
Cryptic coral-feeding Tenellia sp. with eggs
Tenellia yamasui
Tenellia yamasui
Tenellia yamasui
Tenellia yamasui - group of three
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.

Facelinidae



Facelina, Caloria, Favorinus, Noumeaella, Sakuraeolis, Cratena and the Dragon Nudibranch (Ptereolidia semperi) all belong here.

The genus Phyllodesmium is treated on its on due the great diversity of species.

Caloria indica
Caloria indica
Facelina bourailli
Facelina bourailli
Favorinus cf.. mirabliis feeeding on eggs
Favorinus tsuruganus
Godiva sp.
Noumeaela sp.
Noumeaelia sp.
Noumeaella sp.
Pteraeolidia ianthina
Pteraeolidia ianthina
Sakuraeolis kirembosa
Sakuraeolis sp.
Sakuraeolis sp.

Phyllodesmium



The Solar-Powered Nudibranch (P. longicirrum) is the best known species. Growing to over 20cm long in West Papua and around Ambon, it probably gets much of it's nutrition from its symbiotic algae, in addition to feeding on the soft coral Sarcophyton.

A number of species are very cryptic. When P. rudmani is feeding in a colony of Xenia or P. briarium is between the polyps of Pachyclavularia viridis, they are extremely difficult to detect.

Phyllodesmium briareum feeding on Pachyclavularia violacea
Phyllodesmium briareum
Phyllodesmium briareum
Phyllodesmium cf. crypticum
Phyllodesmium cf. crypticum
Phyllodesmium cf. crypticum
Phyllodesmium iriomotense
Phyllodesmium iriomotense
Phyllodesmium cf. jakobsenae
Phyllodesmium kabiranum
Phyllodeesmium koehleri
Phyllodesmium longicirrum
Phyllodesmium longicirrum
Phyllodesmium longicirrum
Phyllodesmium cf. magnum
Phyllodesmium cf. magnum
Phyllodesmium pinnatum
Phyllodesmium rudmani
Phyllodesmium sp. 11 (Gosliner et al. 2018)
Phyllodesmium sp. 11 (Gosliner et al. 2018)
Phyllodesmium sp.
Phyllodesmium sp. 7 (Gosliner et al. 2018)
Phyllodesmium cf. tuberculatum

Aeolidiidae



These are mostly sea anenome feeders.

Cereberilla are fast movers, making photographing small species interesting.

Bulbaeolidia alba
Bulbaeolidia sp.
Cerberilla affinis
Cerberilla cf. assamusiensis
Cerberilla cf. assamusiensis

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Flabellina & Samia

Flabellina & Samia

Flabellina and Samia are the two main genera in the Flabellinidae.

Flabellina speicies are brightly coloured. It's primarily a temporate genus, but a number of species are commonly seen on the reefs of SE Asia.

Samia species used to be included in Flabellina, but differences in the rhinophores were sufficiently large to justify creating this genus.

Flabellina exoptata
Flabellina exoptata
Flabellina exoptata
Samia cf. bicolor
Samia cf. bicolor

Fionidae - Eubranchus

Fionidae - Eubranchus

Eubranchus are characterised by their swollen cerata, which in some species are transparent, so that the branched digestive gland can be seen.

Eubranchus sp.
Eubranchus sp.
Eubranchus?
Eubranchus ?
Eubranchus sp. 23 (Gosliner et al. 2018)
Eubranchus sp. 25 (Gosliner et. al. 2018)

Fionidae - Tenellia

Fionidae - Tenellia

The cerata here are generally arranged in more or less distinct rows.

A coral feeding Tenellia sp with eggs
Cryptic coral-feeding Tenellia sp. with eggs
Tenellia yamasui
Tenellia yamasui
Tenellia yamasui
Tenellia yamasui - group of three
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.
Tenellia sp.

Facelinidae

Facelinidae

Facelina, Caloria, Favorinus, Noumeaella, Sakuraeolis, Cratena and the Dragon Nudibranch (Ptereolidia semperi) all belong here.

The genus Phyllodesmium is treated on its on due the great diversity of species.

Caloria indica
Caloria indica
Facelina bourailli
Facelina bourailli
Favorinus cf.. mirabliis
Favorinus tsuruganus
Godiva sp.
Noumeaela sp.
Noumeaelia sp.
Noumeaella sp.
Pteraeolidia ianthina
Pteraeolidia ianthina
Sakuraeolis kirembosa
Sakuraeolis sp.
Sakuraeolis sp.

Phyllodesmium

Phyllodesmium

The Solar-Powered Nudibranch (P. longicirrum) is the best known species. Growing to over 20cm long in West Papua and around Ambon, it probably gets much of it's nutrition from its symbiotic algae, in addition to feeding on the soft coral Sarcophyton.

A number of species are very cryptic. When P. rudmani is feeding in a colony of Xenia or P. briarium is between the polyps of Pachyclavularia viridis, they are extremely difficult to detect.

Phyllodesmium briareum feeding on Pachyclavularia violacea
Phyllodesmium briareum
Phyllodesmium briareum
Phyllodesmium cf. crypticum
Phyllodesmium cf. crypticum
Phyllodesmium cf. crypticum
Phyllodesmium iriomotense
Phyllodesmium iriomotense
Phyllodesmium cf. jakobsenae
Phyllodesmium kabiranum
Phyllodeesmium koehleri
Phyllodesmium longicirrum
Phyllodesmium longicirrum
Phyllodesmium longicirrum
Phyllodesmium cf. magnum
Phyllodesmium cf. magnum
Phyllodesmium pinnatum
Phyllodesmium rudmani
Phyllodesmium sp. 11 (Gosliner et al. 2018)
Phyllodesmium sp. 11 (Gosliner et al. 2018)
Phyllodesmium sp. 11 (Gosliner et al. 2018)
Phyllodesmium sp.
Phyllodesmium sp. 7 (Gosliner et al. 2018)
Phyllodesmium cf. tuberculatum

Aeolidiidae

Aeolidiidae

These are mostly sea anenome feeders.

Cereberilla are fast movers, making photographing small species interesting.

Bulbaeolidia alba
Bulbaeolidia sp.
Cerberilla affinis
Cerberilla cf. assamusiensis
Cerberilla cf. assamusiensis