Nudibranchs (and other sea slugs) I have seen while diving in Perth.
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Head shield slugs
Nudibranchs
- Aegires villosus
- Aphelodoris cf. gigas (needs positive ID)
- Baeolidia australis
- Chromodoris westraliensis
- Ceratosoma amoenum
- Ceratosoma brevicaudatum
- Cratena lineata
- Dendrodoris arborescens
- Dendrodoris fumata
- Dendrodoris krusensternii
- Diaphorodoris mitsuii
- Doriopsilla sp. (1) (needs positive ID)
- Ercolania annelyleorum
- Glossodoris rufomarginata
- Godiva cf. quadricolor
- Goniobranchus aureopurpureus
- Goniobranchus roboi
- Goniobranchus tinctorius
- Goniodoridella savignyi
- Gymnodoris alba
- Hypselodoris saintvincentia
- Hypselodoris sp. (1) (undescribed)
- Hypselodoris sp. (2) (undescribed)
- Madrella ferruginosa
- Mexichromis macropus
- Mexichromis mariei
- Okenia pellucida
- Okenia sp. (1) (needs positive ID) (TODO)
- Okenia sp. (2) (needs positive ID) (TODO)
- Phyllidiella pustulosa
- Phyllodesmium poindimiei
- Plocamopherus ceylonicus
- Polycera hedgpethi
- Polycera sp. (1) (needs positive ID)
- Rostanga calumus
- Sagaminopteron ornatum
- Thecacera pennigera
- Thordisa sp. (1) (undescribed)
- Trapania safracornia
- Tritonia sp. (1) (undescribed)
- Verconia verconis
Pleurobranchs
Sap sucking slugs
Sea hares
- Aplysia gigantea
- Bursatella leachii (TODO)
Aegires villosus
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Farran, 1905
Aphelodoris cf. gigas
Aphelodoris sp.
Aplysia gigantea
World Register of Marine Species | Encyclopedia of Life

Sowerby, 1869
Baeolidia australis
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Rudman, 1982)
Baeolidia australis is distinguished from Baeolidia moebii by having a thin orange sub-apical band above a broad blue band on each ceras, which is never present in Baeolidia moebii. Baeolidia australis looks bluish whereas Baeolidia moebii is more yellow or brown. The body of Baeolidia australis also seems to have a brown and white reticulate pattern that is not found in Baeolidia moebii.
Carmona L., Pola M., Gosliner T.M. & Cervera J.L. 2014. Review of Baeolidia, the largest genus of Aeolidiidae (Mollusca: Nudibranchia), with the description of five new species. Zootaxa, 3802 (4): 477–514. Retrieved 13 October 2015 from http://doi.org/10.11646/zootaxa.3802.4.5.
Chromodoris westraliensis
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(O’Donoghue, 1924)
Ceratosoma amoenum
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Ceratosoma brevicaudatum
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Abraham, 1876
Cratena lineata
World Register of Marine Species | Encyclopedia of Life

(Eliot, 1905)
Dendrodoris arborescens
World Register of Marine Species | Encyclopedia of Life

(Collingwood, 1881)
Dendrodoris fumata
World Register of Marine Species | Encyclopedia of Life

(Rüppell & Leuckart, 1831)
Dendrodoris krusensternii
World Register of Marine Species | Encyclopedia of Life

(Gray, 1850)

(Gray, 1850)
Diaphorodoris mitsuii
World Register of Marine Species | Encyclopedia of Life

(Baba, 1938)
Doriopsilla sp. (1)

Elysia coodgeensis
World Register of Marine Species | Encyclopedia of Life

(Angas, 1864)

(Angas, 1864)
Elysia ornata
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Ercolania annelyleorum
World Register of Marine Species | Encyclopedia of Life


Wägele, Stemmer, Burghardt & Händeler, 2010
Glossodoris rufomarginata
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Bergh, 1890)
Godiva cf. quadricolor
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Barnard, 1927)
Goniobranchus aureopurpureus
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Collingwood, 1881)
Goniobranchus roboi
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Gosliner & Behrens, 1998)
Goniobranchus tinctorius
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Ruppell & Leuckart, 1828)
Goniodoridella savignyi
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Pruvot-Fol, 1933

Pruvot-Fol, 1933
Gymnodoris alba
World Register of Marine Species | Encyclopedia of Life

(Bergh, 1877)
Hypselodoris saintvincentia
World Register of Marine Species | Encyclopedia of Life

(Burn, 1962)

(Burn, 1962)
Hypselodoris sp. (1)

Hypselodoris sp. (2)

Madrella ferruginosa
World Register of Marine Species | Encyclopedia of Life

Alder & Hancock, 1864
Mexichromis macropus
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Rudman, 1983

Rudman, 1983
Mexichromis mariei
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Crosse, 1872)
Philinopsis gardineri
World Register of Marine Species | Encyclopedia of Life

(Eliot, 1903)
This is not a nudibranch, but rather a head shield slug
Philinopsis speciosa
World Register of Marine Species | Encyclopedia of Life

Pease, 1860
This is not a nudibranch, but rather a head shield slug
Phyllidiella pustulosa
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Cuvier, 1804)
Phyllodesmium poindimiei
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Risbec, 1928)
Pleurobranchus hilli
World Register of Marine Species | Encyclopedia of Life

Not actually a nudibranch, but still a species of sea slug.
Plocamopherus ceylonicus
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Kelaart, 1858)

(Kelaart, 1858)
Polycera hedgpethi
World Register of Marine Species | Encyclopedia of Life

Marcus, 1964
Polycera sp. (1)

Rostanga calumus
World Register of Marine Species | Encyclopedia of Life

Rudman & Avern, 1989
Sagaminopteron ornatum
World Register of Marine Species | Encyclopedia of Life

Tokioka & Baba, 1964
Thecacera pennigera
World Register of Marine Species | Encyclopedia of Life | Wikipedia

(Montagu, 1815)

(Montagu, 1815)
Thordisa sp. (1)


Trapania safracornia
World Register of Marine Species | Encyclopedia of Life | Wikipedia

Fahey, 2004
Can be easily confused with Trapania brunnea. T. safracornia lacks the irregular patches on its that distinguish T. brunnea.
Tritonia sp. (1)


Verconia verconis
World Register of Marine Species | Encyclopedia of Life

(Basedow & Hedley, 1905)