APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

Sea slugs (Heterobranchia) - Order Nudibranchia
Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Aeolidioidea (Superfamily) > Aeolidiidae (Family)

Aeolidia
For Aeolidia papillosa see species below -
Aeolidia filomenae Kienberger, Carmona, Pola, Padula, Gosliner & Cervera, 2016* - Common grey sea slug

Aeolidiella
Aeolidiella alderi (Cocks, 1852) - A Sea slug
Aeolidiella glauca (Alder & Hancock, 1845) - A sea slug

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Aeolidioidea (Superfamily) > Facelinidae (Family)

Facelina
Facelina annulicornis (Chamisso & Eysenhardt, 1821)
- Dotted aeolis

Facelina auriculata (Müller, 1776) - Greater facelina
Facelina bostoniensis (Couthouy, 1838) - A sea slug

Favorinus
Favorinus blianus Lemche & Thompson, 1974
- A facelinid sea slug

Favorinus branchialis (Rathke, 1806) - White aeolis

Pruvotfolia
Pruvotfolia pselliotes (Labbé, 1923)
- A facelinid sea slug

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Fionoidea (Superfamily) > Calmidae (Family)

Calma
Calma glaucoides (Alder & Hancock, 1854)
- An Egg-eating sea slug

Calma gobioophaga Calado & Urgorri, 2002
- A Goby-egg eating sea slug

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Fionoidea (Superfamily) > Fionoidea (Family)

Fiona
Fiona pinnata (Eschscholtz, 1831) - Noble aeolis

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Fionoidea (Superfamily) > Eubranchidae (Family)

Amphorina
Amphorina andra Korshunova, Malmberg, Prkić, Petani, Fletcher, Lundin, Martynov, 2020 - A sea slug
Amphorina farrani (Alder & Hancock, 1844) - A sea slug
Amphorina linensis (Garcia-Gomez, Cervera & Garcia, 1990) syn. Eubranchus linensis - A Sea slug
Amphorina pallida (Alder & Hancock, 1842)
syn. Eubranchus pallidus - A Sea slug

Capellinia
Capellinia fustifera (Lovén, 1846) syn. Eubranchus doriae
- A sea slug

Eubranchus
Eubranchus exiguus (Alder & Hancock, 1848)
- Minute aeolis

Eubranchus vittatus (Alder & Hancock, 1842) - A sea slug

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Fionoidea (Superfamily) > Tergipedidae (Family)

Cuthona
Cuthona nana (Alder & Hancock, 1842) - A sea slug

Tergipes
Tergipes tergipes (Forsskål in Niebuhr, 1775)
- Despised aeolis

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Fionoidea (Superfamily) > Trinchesiidae (Family)

Catriona
Catriona aurantia (Alder & Hancock, 1842)
- A trinchesiid sea slug

Rubramoena
Rubramoena "Newlyn Fenwick A"
- A trinchesiid nudibranch / sea slug

Rubramoena sp. (Newlyn 15.08.20)
- A trinchesiid nudibranch / sea slug

Tenellia
Tenellia adspersa (Nordmann, 1845) - Lagoon sea slug

Trinchesia
Trinchesia caerulea (Montagu, 1804)
syn. Tenellia caerulea
- A trinchesiid sea slug

Trinchesia foliata (Forbes & Goodsir, 1839)
syn. Tenellia foliata and Cuthona foliata
- A trinchesiid sea slug

Zelentia
Zelentia pustulata (Alder & Hancock, 1854)
- A trinchesiid sea slug

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Undescribed Species
Undescribed tergipedid nudibranch found at Newlyn, Cornwall, 11.08.15.

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Cladobranchia (Suborder) > Fionoidea (Superfamily) > Coryphellidae (Family)

Fjordia
Fjordia chriskaugei Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017 - A coryphellid sea slug

Cladobranchia (Suborder) > Fionoidea (Superfamily) > Flabellinidae (Family)

Carronella
Carronella pellucida (Alder & Hancock, 1843)
- A flabellinid sea slug

Edmundsella
Edmundsella pedata (Montagu, 1816)
syn. Flabellina pedata
- A flabellinid sea slug

Cladobranchia (Suborder) > Dendronotoidea (Superfamily) > Dotidae (Family)

Doto
Doto coronata - Crowned sea-nymph
Doto dunnei Lemche, 1976 ? - A sea slug
Doto eireana Lemche, 1976 - A sea slug
Doto koenneckeri Lemche, 1976 - A sea slug
Doto millbayana Lemche, 1976 - A sea slug

Doto species (1) ? - Sea slug Newlyn Marina 02.10.14
Doto species (2) ? - Sea slug Newlyn Marina 02.10.14
Doto species (3) ? - Sea slug Newlyn Marina 16.10.14
Doto species (4) ? - Sea slug Newlyn Marina 17.10.14
Doto species (5) ?
- Found amongst Corallina officinalis 03.06.15

Cladobranchia (Suborder) > Proctonotidea (Superfamily) > Janolidae (Family)

Antiopella
Antiopella cristata (delle Chiaje, 1841)
syn. Janolus cristatus - Crested aeolis

Janolus
Janolus hyalinus (Alder & Hancock, 1854)

Cladobranchia (Suborder) > Dendronotoidea (Superfamily) > Dendronotidae (Family)

Dendronotus
Dendronotus frondosus (Ascanius, 1774)
- Bushy-backed slug

Cladobranchia (Suborder) > Dendronotoidea (Superfamily) > Hancockiidae (Family)

Hancockia
Hancockia uncinata (Hesse, 1872) - A sea slug

Cladobranchia (Suborder) > Tritonioidea (Superfamily) > Tritoniidae (Family)

Tritonia
Tritonia hombergii Cuvier, 1803 - Homberg's Triton
Tritonia lineata Alder & Hancock, 1848 - A sea slug
Tritonia manicata Deshayes, 1853 - A sea slug
Tritonia plebeia Johnston, 1828 - Common Triton

Doridina (Suborder) > Doridoidei (Infraorder) > Doridoidea (Superfamily) > Discodorididae (Family)

Geitodoris
Geitodoris planata (Alder & Hancock, 1846)

Jorunna
Jorunna tomentosa (Cuvier, 1804) syn. Doris johnstoni
- Johnston's sea lemon (historical application)

Rostanga
Rostanga rubra (Risso, 1818) - Red Doris

Doridina (Suborder) > Doridoidei (Infraorder) > Doridoidea (Superfamily) > Dorididae (Family)

Doris
Doris pseudoargus (Rapp, 1827) - Sea Lemon
Doris cf. ocelligera - A sea slug

Doridina (Suborder) > Doridoidei (Infraorder) > Onchidoridoidea (Superfamily) >
Calycidorididae (Family)

Diaphorodoris
Diaphorodoris luteocincta (M Sars, 1870)
- A calycidoridid sea slug

Doridina (Suborder) > Doridoidei (Infraorder) > Onchidoridoidea (Superfamily) > Goniodorididae (Family)

Ancula
Ancula gibbosa (Risso, 1818) - Crested slug

Goniodoris
Goniodoris castanea (Alder & Hancock, 1845)
Goniodoris nodosa (Montagu, 1808) - Angled doris

Okenia
Okenia aspersa (Alder & Hancock, 1845) - A sea slug
Okenia elegans (Leuckart, 1828) - Yellow skirt slug

Trapania
Trapania pallida Kress, 1968 - A sea slug

Doridina (Suborder) > Doridoidei (Infraorder) > Onchidoridoidea (Superfamily) > Onchidorididae (Family)

Acanthodoris
Acanthodoris pilosa (Abildgaard in Müller, 1789)
- Thorny doris or Hairy sea lemon

Knoutsodonta
Knoutsodonta depressa (Alder & Hancock, 1842)
- A sea slug

Onchidoris
Onchidoris bilamellata (Linnaeus, 1767)
- Dusky doris or Barnacle-eating onchidoris

Onchidoris muricata (O. F. Müller, 1776)
- Rough doris

Onchidoris sparsa (Alder & Hancock, 1846)
- An onchidoridid nudibranch

Doridina (Suborder) > Doridoidei (Infraorder) > Polyceroidea (Superfamily) > Aegiridae (Family)

Aegires
Aegires punctilucens (d'Orbigny, 1837)
- An aegirid nudibranch / sea slug

Doridina (Suborder) > Doridoidei (Infraorder) > Polyceroidea (Superfamily) > Polyceridae (Family) > Polycerinae (Subfamily)

Palio
Palio nothus (Johnston, 1838)

Polycera
Polycera faeroensis Lemche, 1929
- A polycerid nudibranch

Polycera norvegica Sørensen, Rauch, Pola &
Malaquias, 2020 - A polycerid nudibranch

Polycera quadrilineata (O.F. Müller, 1776)
- Four-lined Polycera

Polycera quadrilineata feeding behaviour on
Wakame, Undaria pinnatifida at Newlyn Marina.

Thecacera
Thecacera pennigera (Montagu, 1813)
- Winged thecacera

Doridina (Suborder) > Doridoidei (Infraorder) > Polyceroidea (Superfamily) > Polyceridae (Family) > Triophinae (Subfamily)

Crimora
Crimora papillata Alder & Hancock, 1862
- A polycerid sea slug

Limacia
Limacia clavigera (O.F. Müller, 1776)
- Orange-clubbed sea slug

Also see -
"Sea slugs (Opisthobranchia Orders other than Nudibranchia)"
Lamellaria species, velutinids, look very much like sea slugs but are infact marine snails. Images are listed under the section 'Cowries and Velutinids'. Images of the Celtic sea slug, Onchidella celtica, can be found under Pulmonata.

For copepod parasites of nudibranchs see Doridicola and family Splanchnotrophidae, on the copepod page of this website.

Article -
Nudibranchs at Newlyn Marina at ''An Bollenessor''

Sealife Survey
Record UK marine life using the the Marine Biological Association's Sealife Survey (external link)

Sea slug images Heterobranchia Order Nudibranchia UK