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Yellow Sea Slugs and Nudibranchs (187 species) 187

Yellow comes from carotenoid pigments sequestered from sponges or algae. The lemon yellow of Phyllidia and the sulphur yellow of Notodorididae have evolved as aposematic warning colours, signalling chemical defence.

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Hypselodoris festiva

Hypselodoris festiva

(A. Adams, 1861)
Jorunna parva

Jorunna parva

(Baba, 1938)
Cadlinella ornatissima

Cadlinella ornatissima

(Risbec, 1928)
Doriprismatica atromarginata

Doriprismatica atromarginata

(Cuvier, 1804)
Colpodaspis thompsoni

Colpodaspis thompsoni

G. H. Brown, 1979
Siphopteron flavum

Siphopteron flavum

(Tokioka & Baba, 1964)
Tambja amakusana

Tambja amakusana

Baba, 1987
Goniobranchus roboi

Goniobranchus roboi

(Gosliner & Behrens, 1998)
Goniobranchus kuniei

Goniobranchus kuniei

(Pruvot-Fol, 1930)
Elysia obtusa

Elysia obtusa

Baba, 1938
Siphopteron nigromarginatum

Siphopteron nigromarginatum

Gosliner, 1989
Micromelo barbarae

Micromelo barbarae

Feliciano, Malaquias, Stout, Brenzinger, Gosliner & Á. Valdés, 2021
Gymnodoris citrina

Gymnodoris citrina

(Bergh, 1877)
Tenellia sp.11

Tenellia sp.11
Hantazuia yugoikedai

Hantazuia yugoikedai

Korshunova, Fletcher & Martynov, 2025
Ardeadoris cruenta

Ardeadoris cruenta

(Rudman, 1986)
Halgerda willeyi

Halgerda willeyi

Eliot, 1904
Diversidoris crocea

Diversidoris crocea

(Rudman, 1986)
Goniobranchus coi

Goniobranchus coi

(Risbec, 1956)
Costasiella sp. 4

Costasiella sp. 4
Stiliger sp. 1

Stiliger sp. 1
Ardeadoris egretta

Ardeadoris egretta

Rudman, 1984
Marianina rosea

Marianina rosea

(Pruvot-Fol, 1930)
Tenellia sp. 2

Tenellia sp. 2
Thecacera pennigera

Thecacera pennigera

(Montagu, 1813)
Homoiodoris japonica

Homoiodoris japonica

Bergh, 1882
Doriprismatica sp. 1

Doriprismatica sp. 1
Halgerda brunneomaculata

Halgerda brunneomaculata

Carlson & Hoff, 1993
Tyrannodoris sp. 1

Tyrannodoris sp. 1
Diversidoris flava

Diversidoris flava

(Eliot, 1904)
Eubranchopsis virginalis

Eubranchopsis virginalis

Baba, 1949
Hallaxa cryptica

Hallaxa cryptica

Gosliner & S. Johnson, 1994
Siphopteron sp. 1

Siphopteron sp. 1
Aegires flores

Aegires flores

Fahey & Gosliner, 2004
Cyerce basi

Cyerce basi

K. Moreno, Gosliner, N. G. Wilson, Krug & Á. Valdés, 2025
Notodoris citrina

Notodoris citrina

Bergh, 1875
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Siphopteron dumbo

Siphopteron dumbo

Ong & Gosliner, 2017
Gastropteron sp. 3

Gastropteron sp. 3
Thordisa sp. 9

Thordisa sp. 9
Thuridilla flavomaculata

Thuridilla flavomaculata

Gosliner, 1995
Janolus tricellariodes

Janolus tricellariodes

Pola & Gosliner, 2019
Verconia laboutei

Verconia laboutei

(Rudman, 1986)
Tenellia sp.13

Tenellia sp.13
Goniodoridella sp.18

Goniodoridella sp.18
Gymnodoris suggens

Gymnodoris suggens

(Risbec, 1928)
Umbraculum umbraculum

Umbraculum umbraculum

([Lightfoot], 1786)
Ardeadoris tomsmithi

Ardeadoris tomsmithi

(Bertsch & Gosliner, 1989)
Phyllidiidae sp. 1

Phyllidiidae sp. 1
Tylodina sp. 1

Tylodina sp. 1
Cadlina japonica

Cadlina japonica

Baba, 1937
Halgerda albocristata

Halgerda albocristata

Gosliner & Fahey, 1998
Catriona osezakiensis

Catriona osezakiensis

Martynov, Korshunova, Lundin, Malmberg, 2022
Gymnodoris feyae

Gymnodoris feyae

De Souza-Canal & Valdés, 2025
Hypselodoris imperialis

Hypselodoris imperialis

(Pease, 1860)
Siphopteron brunneomarginatum

Siphopteron brunneomarginatum

(Carlson & Hoff, 1974)
Crimora sp. 1

Crimora sp. 1
Discodoris cebuensis

Discodoris cebuensis

Bergh, 1877
Tenellia sp. 5

Tenellia sp. 5
Bermudella sp. 1

Bermudella sp. 1
Aegires citrinus

Aegires citrinus

Pruvot-Fol, 1930
Facelinidae sp.11

Facelinidae sp.11
Halgerda onna

Halgerda onna

Fahey & Gosliner, 2001
Stiliger sp. 5

Stiliger sp. 5
Tambja gabrielae

Tambja gabrielae

Pola, Cervera & Gosliner, 2005
Goniobranchus sp. 3

Goniobranchus sp. 3
Notodoris serenae

Notodoris serenae

Gosliner & Behrens, 1997
Aeolidina sp. 4

Aeolidina sp. 4
Lamprohaminoea evelinae

Lamprohaminoea evelinae

Oskars & Malaquias, 2020
Verconia sp. 4

Verconia sp. 4
Tenellia sp.15

Tenellia sp.15
Sakuraeolis kirembosa

Sakuraeolis kirembosa

Rudman, 1980
Cyerce nigra

Cyerce nigra

Bergh, 1870
Gymnodoris sp.33

Gymnodoris sp.33
Polycera sp. 8

Polycera sp. 8
Spinophallus falciphallus

Spinophallus falciphallus

(Gosliner, 2011)
Tenellia sp.17

Tenellia sp.17
Halgerda terramtuentis

Halgerda terramtuentis

Bertsch & S. Johnson, 1982
Siphopteron sp. 5

Siphopteron sp. 5
Tenellia sp.31

Tenellia sp.31
Aegires lemoncello

Aegires lemoncello

Fahey & Gosliner, 2004
Doriopsis granulosa

Doriopsis granulosa

Pease, 1860
Siphopteron flavolineatum

Siphopteron flavolineatum

Ong & Gosliner, 2017
Stylocheilus longicauda

Stylocheilus longicauda

(Quoy & Gaimard, 1825)
Tenellia sp.75

Tenellia sp.75
Aegires incusus

Aegires incusus

Fahey & Gosliner, 2004
Goniobranchus geminus

Goniobranchus geminus

(Rudman, 1987)
Halgerda dalanghita

Halgerda dalanghita

Fahey & Gosliner, 1999
Armina scotti

Armina scotti

Mehrotra, Caballer & Chavanich, 2017
Taringa halgerda

Taringa halgerda

Gosliner & Behrens, 1998
Abronica sp. 2

Abronica sp. 2
Geitodoris lutea

Geitodoris lutea

Baba, 1937
Reticulidia halgerda

Reticulidia halgerda

Brunckhorst & Burn, 1990
Asteronotus cespitosus

Asteronotus cespitosus

(van Hasselt, 1824)
Tenellia sp.12

Tenellia sp.12
Trapania reticulata

Trapania reticulata

Rudman, 1987
Doris tricolor

Doris tricolor

(Baba, 1938)
Hantazuia imagawai

Hantazuia imagawai

Korshunova, Fletcher & Martynov, 2025
Notodoris gardineri

Notodoris gardineri

Eliot, 1906
Sclerodoris sp. 2

Sclerodoris sp. 2
Chromodoris joshi

Chromodoris joshi

Gosliner & Behrens, 1998
Notodoris minor

Notodoris minor

Eliot, 1904
Cadlina luteomarginata

Cadlina luteomarginata

MacFarland, 1966
Hantazuia sp. 1

Hantazuia sp. 1
Sagaminopteron pohnpei

Sagaminopteron pohnpei

(Hoff & Carlson, 1983)
Tyrannodoris nikolasi

Tyrannodoris nikolasi

(Pola, Padula, Gosliner & Cervera, 2014)
Caloria militaris

Caloria militaris

(Alder & Hancock, 1864)
Ceratosoma palliolatum

Ceratosoma palliolatum

Rudman, 1988
Discodorididae sp. 2

Discodorididae sp. 2
Doris sp. 2

Doris sp. 2
Ercolania sp. 4

Ercolania sp. 4
Paradoris sp. 5

Paradoris sp. 5
Plocamopherus maculatus

Plocamopherus maculatus

(Pease, 1860)
Polycera capensis

Polycera capensis

Quoy & Gaimard, 1824
Siphopteron sp. 9

Siphopteron sp. 9
Atagema papillosa

Atagema papillosa

(Risbec, 1928)
Gymnodoris sp.28

Gymnodoris sp.28
Halgerda sp. 4

Halgerda sp. 4
Phyllidia multituberculata

Phyllidia multituberculata

C. R. Boettger, 1915
Doris montereyensis

Doris montereyensis

J. G. Cooper, 1863
Gymnodoris bernardae

Gymnodoris bernardae

De Souza-Canal & Valdés, 2025
Gymnodoris sp.14

Gymnodoris sp.14
Hantazuia kimotoi

Hantazuia kimotoi

Korshunova, Fletcher & Martynov, 2025
Tambja sp. 2

Tambja sp. 2
Thordisa luteola

Thordisa luteola

J. M. Chan & Gosliner, 2007
Aeolidina sp.17

Aeolidina sp.17
Discodorididae sp.25

Discodorididae sp.25
Discodorididae sp.32

Discodorididae sp.32
Doto sp.17

Doto sp.17
Goniobranchus conchyliatus

Goniobranchus conchyliatus

(Yonow, 1984)
Reticulidia suzanneae

Reticulidia suzanneae

Á. Valdés & Behrens, 2002
Roboastra tentaculata

Roboastra tentaculata

(Pola, Cervera & Gosliner, 2005)
Ardeadoris scottjohnsoni

Ardeadoris scottjohnsoni

Bertsch & Gosliner, 1989
Caldukia affinis

Caldukia affinis

(Burn, 1958)
Coryphellina poenicia

Coryphellina poenicia

(Burn, 1957)
Discodorididae sp. 7

Discodorididae sp. 7
Discodorididae sp.27

Discodorididae sp.27
Doridoidea sp.17

Doridoidea sp.17
Doriprismatica tibboeli

Doriprismatica tibboeli

(Á. Valdés & M. J. Adams, 2005)
Goniobranchus sp.20

Goniobranchus sp.20
Halgerda johnsonorum

Halgerda johnsonorum

Carlson & Hoff, 2000
Hypselodoris kanga

Hypselodoris kanga

Rudman, 1977
Jorunna pardus

Jorunna pardus

Behrens & R. Henderson, 1981
Marionia sp. 7

Marionia sp. 7
Paratritonia lutea

Paratritonia lutea

Baba, 1949
Pelagella sp. 8

Pelagella sp. 8
Phyllaplysia viridis

Phyllaplysia viridis

(Bergh, 1905)
Plocamopherus sp. 2

Plocamopherus sp. 2
Siphopteron citrinum

Siphopteron citrinum

(Carlson & Hoff, 1974)
Tayuva coerulescens

Tayuva coerulescens

(Bergh, 1888)
Tenellia sp.68

Tenellia sp.68
Tenellia sp.92

Tenellia sp.92
Colpodaspis sp. 6

Colpodaspis sp. 6
Discodorididae sp.10

Discodorididae sp.10
Discodorididae sp.18

Discodorididae sp.18
Doridoidea sp. 8

Doridoidea sp. 8
Doriopsilla aurea

Doriopsilla aurea

(Quoy & Gaimard, 1832)
Felimare picta

Felimare picta

(R. A. Philippi, 1836)
Halgerda formosa

Halgerda formosa

Bergh, 1880
Halgerda guahan

Halgerda guahan

Carlson & Hoff, 1993
Janolus sp.19

Janolus sp.19
Peltodoris mullineri

Peltodoris mullineri

Millen & Bertsch, 2000
Siphopteron quadrispinosum

Siphopteron quadrispinosum

Gosliner, 1989
Tambja verconis

Tambja verconis

(Basedow & Hedley, 1905)
Thordisa sp.10

Thordisa sp.10
Thordisa sp.12

Thordisa sp.12
Armina variolosa

Armina variolosa

(Bergh, 1904)
Cadlinella hirsuta

Cadlinella hirsuta

Rudman, 1995
Discodorididae sp.12

Discodorididae sp.12
Discodorididae sp.16

Discodorididae sp.16
Diversidoris sulphurea

Diversidoris sulphurea

(Rudman, 1986)
Doridoidea sp.12

Doridoidea sp.12
Doriopsilla carneola

Doriopsilla carneola

(Angas, 1864)
Doriprismatica sibogae

Doriprismatica sibogae

(Bergh, 1905)
Doris cameroni

Doris cameroni

(J. K. Allan, 1947)
Goniobranchus sp. 7

Goniobranchus sp. 7
Goniobranchus sp.19

Goniobranchus sp.19
Gymnodoris subflava

Gymnodoris subflava

Baba, 1949
Notodoris sp. 1

Notodoris sp. 1
Phyllidia flava

Phyllidia flava

Aradas, 1847
Thecacera sp.11

Thecacera sp.11
Thordisa sp. 2

Thordisa sp. 2
Tylodina perversa

Tylodina perversa

(Gmelin, 1791)
Gastropteron viride

Gastropteron viride

Tokioka & Baba, 1964
Glossodoris cincta

Glossodoris cincta

(Bergh, 1888)
Gymnodoris deniseae

Gymnodoris deniseae

De Souza-Canal & Valdés, 2025
Melibe leonina

Melibe leonina

(A. A. Gould, 1852)
Polycera sp. 6

Polycera sp. 6
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