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)

Eubranchus
Eubranchus doriae (Trinchese, 1874) - A sea slug
Eubranchus exiguus (Alder & Hancock, 1848)
- Minute aeolis

Eubranchus cf. farrani (Alder & Hancock, 1844)
- Farran's aeolis

Eubranchus cf. farrani (Alder & Hancock, 1844)
- Farran's aeolis (orange specimen)

Eubranchus linensis Garcia-Gomez, Cervera & Garcia, 1990 - A sea slug
Eubranchus pallidus (Alder & Hancock, 1842) - A sea slug
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 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

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

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Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Flabellinoidea (Superfamily) > Flabellinidae (Family)

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

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Aeolidida (Parvorder) > Flabellinoidea (Superfamily) > Flabellinidae (Family)

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

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > [unassigned] Cladobranchia (Parvorder) > 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

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > [unassigned] Cladobranchia (Parvorder) > Proctonotidae (Family)

Janolus
Janolus cristatus (delle Chiaje, 1841) - Crested aeolis
Janolus hyalinus (Alder & Hancock, 1854) - A sea slug

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Dendronotida (Parvorder) > Tritonioidea (Superfamily) > Dendronotidae (Family)

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

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Dendronotida (Parvorder) > Tritonioidea (Superfamily) > Hancockiidae (Family)

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

Dexiarchia (Suborder) > Cladobranchia (Infraorder) > Dendronotida (Parvorder) > Tritonioidea (Superfamily) > Tritoniidae (Family)

Tritonia
Tritonia lineata Alder & Hancock, 1848 - A sea Slug
Tritonia manicata Deshayes, 1853 - A Sea slug
Tritonia plebeia Johnston, 1828 - Common triton

Euctenidiacea (Suborder) > Doridacea (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

Euctenidiacea (Suborder) > Doridacea (Infraorder) > Doridoidea (Superfamily) > Dorididae (Family)

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

Euctenidiacea (Suborder) > Doridacea (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

Trapania
Trapania pallida Kress, 1968 - A sea slug

Euctenidiacea (Suborder) > Doridacea (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

Euctenidiacea (Suborder) > Doridacea (Infraorder) > Polyceroidea (Superfamily) > Aegiridae (Family)

Aegires
Aegires punctilucens (d'Orbigny, 1837) - A sea slug

Euctenidiacea (Suborder) > Doridacea (Infraorder) > Polyceroidea (Superfamily) > Polyceridae (Family) > Polycerinae (Subfamily)

Palio
Palio nothus (Johnston, 1838)

Polycera
Polycera faeroensis Lemche, 1929 - A sea slug
Polycera quadrilineata (O.F. Müller, 1776) - A sea slug
Polycera quadrilineata (O.F. Müller, 1776)
- feeding behaviour on Wakame, Undaria pinnatifida.

Thecacera
Thecacera pennigera (Montagu, 1813)
- Winged thecacera

Euctenidiacea (Suborder) > Doridacea (Infraorder) > Polyceroidea (Superfamily) > Polyceridae (Family) > Triophinae (Subfamily)

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