Species Gallery (Gastropoda)
The links below will open a large version of the image in an overlay
![](/assets/images/marlin/species/web/o_acapil.jpg)
Acanthodoris pilosa.
Copyright: Jim Anderson
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Acanthodoris pilosa in laboratory.
Copyright: Jim Anderson
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Acanthodoris pilosa in the Scilly Isles.
Copyright: Robert Keen
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Acanthodoris pilosa on substratum.
Copyright: Jim Anderson
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Close up view of Acanthodoris pilosa.
Copyright: Robert Keen
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The sea slug Acanthodoris pilosa.
Copyright: Paul Newland
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Acteon tornatilis shell, approximately 1.5 cm.
Copyright: Dr Hilmar Hinz
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Acteon tornatilis and burrow on Aberavon beach.
Copyright: Judith Oakley
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Acteon tornatilis on Aberavon beach.
Copyright: Judith Oakley
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The sea slug Adalaria proxima.
Copyright: Jim Anderson
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Aeolidia papillosa.
Copyright: Anne Marie Power
![](/assets/images/marlin/species/web/o_joakley20100505.jpg)
A macro image of Aeolidia papillosa at Wembury pools
Copyright: Judith Oakley
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Detail of head and rhinophores of Aeolidia papillosa.
Copyright: Tabitha Pearman
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Spawn of Aeolidia papillosa.
Copyright: Judith Oakley
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The grey sea slug Aeolidia papillosa.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_aeoald.jpg)
Aeolidiella alderi
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_aeosan.jpg)
Aeolidiella sanguinea.
Copyright: Marco Faasse
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A white colour morph of Eubranchia farrani.
Copyright: Judith Oakley
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Eubranchus farrani pale orange/pink colour morph with Obelia sp. on kelp frond.
Copyright: Judith Oakley
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Eubranchus farrani against a black background.
Copyright: Fiona Crouch
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Eubranchus farrani orange and white colour morph on sugar kelp.
Copyright: Judith Oakley
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Eubranchus farrani orange and white colour morph.
Copyright: Judith Oakley
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A pair of Eubranchus farrani with hydroid and bryozoan on Ulva lactuca.
Copyright: Judith Oakley
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Orange and white colour morph of Eubranchus farrani on Obelia sp. attached to kelp.
Copyright: Judith Oakley
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Spawn of Eubranchus farrani.
Copyright: Judith Oakley
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The nudibranch Ancula gibbosa, with dorsal gills.
Copyright: Paula Lightfoot
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Anterior view of Ancula gibbosa, with dorsal gill tuft.
Copyright: Paula Lightfoot
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Dorsal surface of Ancula gibbosa, with anterior rhinophores visible on the left.
Copyright: Paula Lightfoot
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Antiopella cristata.
Copyright: Judith Oakley
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Antiopella cristata on a pontoon.
Copyright: Judith Oakley
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A feeding Antiopella cristata sea slug.
Copyright: Paul Newland
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Close up of Antiopella cristata coruncle.
Copyright: Judith Oakley
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Aplysia punctata rearing up from the seabed.
Copyright: Sue Daly
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Aplysia punctata (left hand side) with Actinothoe sphyrodeta.
Copyright: Sue Scott
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Aplysia punctata eggs in a laboratory.
Copyright: John Rundle
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Aplysia punctata eggs on Dilsea carnosa.
Copyright: Judith Oakley
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Aplysia punctata in a laboratory.
Copyright: John Rundle
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Aplysia punctata in a rockpool at Batten Bay, Plymouth.
Copyright: Jack Sewell
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Aplysia punctata on sandy gravel in the Channel Isles.
Copyright: Sue Daly
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Aplysia punctata showing eye.
Copyright: Jack Sewell
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Aplysia punctata under a boulder.
Copyright: Judith Oakley
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Aplysia punctata with string of pink eggs.
Copyright: Judith Oakley
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A mating chain of Aplysia punctata in 14°C water.
Copyright: Paul Newland
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Egg mass from Aplysia punctata in 14°C water.
Copyright: Paul Newland
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The sea hare Aplysia punctata on leaves of Zostera marina.
Copyright: Dr Keith Hiscock
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Aporrhais pespelecani.
Copyright: Marine Biological Association of the UK (MBA)
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Aporrhais pespelecani on a green background.
Copyright: Dr Hilmar Hinz
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Aporrhais pespelecani shell lying on some sand.
Copyright: Dr Keith Hiscock
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A pair of Aporrhais pespelecani
Copyright: Marine Biological Association of the UK (MBA)
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The sea slug Armina loveni.
Copyright: Jim Anderson
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Berthella plumula on Spirorbis covered rock.
Copyright: Tabitha Pearman
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Berthella plumula.
Copyright: Tabitha Pearman
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An active sea slug, Berthella plumula.
Copyright: Holly Latham
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Apertural view of Bittium reticulatum.
Copyright: Amgueddfa Cymru - Museum Wales
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Buccinum undatum
Copyright: Gordon Lang
![](/assets/images/marlin/species/web/o_bucund5.jpg)
Buccinum undatum crawling on the seabed highlighting shape of foot, tentacles and siphon. Note also the Crepidula fornicata on the shell.
Copyright: Paul Newland
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Buccinum undatum egg mass.
Copyright: Paul Newland
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Buccinum undatum shell against a blue background.
Copyright: Judith Oakley
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Group of Buccinum undatum illustrating shape of foot, siphon and operculum.
Copyright: Marine Ecological Surveys Ltd
![](/assets/images/marlin/species/web/o_bucund4.jpg)
The whelk Buccinum undatum laying eggs, late December 2002.
Copyright: Dr Keith Hiscock
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Three spawning Buccinum undatum with Sea Loch anemones
Copyright: Gordon Lang
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Two Buccinum undatum individuals in what appears to be a mating position.
Copyright: Paul Newland
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Cadlina laevis with encrusting red algae at Doune, Scotland.
Copyright: Fiona Crouch
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Cadlina laevis in the Scilly Isles.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_caearm.jpg)
Six specimens of Caecum armoricum.
Copyright: Dennis R. Seaward
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Front half of adult Caecum armoricum.
Copyright: Nigel Charles
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Post larval juvenile of Caecum armoricum. Whole animal and shell, showing protoconch and operculum.
Copyright: Nigel Charles
![](/assets/images/marlin/species/web/o_caearm3.jpg)
Two specimens of Caecum armoricum. The smaller specimen has laid down a new septum preparatory to breaking off the empty part of the shell.
Copyright: Nigel Charles
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Painted top shell
Copyright: Paul Naylor
![](/assets/images/marlin/species/web/o_calziz5.jpg)
Calliostoma zizyphinum in Lyme Bay, Devon.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_calziz8.jpg)
Calliostoma zizyphinum on a rock amongst barnacles and limpets.
Copyright: Judith Oakley
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Calliostoma zizyphinum with Corynactis viridis on the Manacles, southwest Cornwall.
Copyright: Robert Keen
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Calliostoma zizyphinum.
Copyright: Dr Harvey Tyler-Walters
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Lone Calliostoma zizyphinum at Firestone.
Copyright: Dr Keith Hiscock
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Lone Calliostoma zizyphinum at Lundy.
Copyright: Dr Keith Hiscock
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Painted top shell.
Copyright: Dr Keith Hiscock
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Caloria elegans from a rocky reef area, Co Antrim.
Copyright: Bernard Picton
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Chinamans hat snail attached to intertidal vegetation
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090206_6.jpg)
Aperture of Chinamans hat shell, found on beach
Copyright: David Fenwick Snr.
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Spire of Chinamans hat shell, found on beach
Copyright: David Fenwick Snr.
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Flabellina pellucida.
Copyright: Sue Scott
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An intertidal feeding Cerithiopsis tubercularis
Copyright: David Fenwick Snr.
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An intertidal feeding Cerithiopsis tubercularis
Copyright: David Fenwick Snr.
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Apertural view of Colus islandicus.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_crefor6.jpg)
Crepidula fornicata at Oreston Spit.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_crefor5.jpg)
Crepidula fornicata growing on the shell of an edible crab illustrating diversity of substrata on which it can grow.
Copyright: Peter Watkinson
![](/assets/images/marlin/species/web/o_crefor2.jpg)
Chain of slipper limpets on the lower shore.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_crefor3.jpg)
Individual Crepidula fornicata on pebble intertidally
Copyright: Jack Sewell
![](/assets/images/marlin/species/web/o_crefor4.jpg)
Single Crepidula fornicata on rock overhang.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_cripap.jpg)
Crimora papillata in the Channel Isles.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_sdaly20100805.jpg)
Crimora papillata on an encrusting sponge
Copyright: Sue Daly
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Dendronotus frondosus on kelp at Bach Island, Firth of Lorne on the west coast of Scotland.
Copyright: Jim Anderson
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Dendronotus frondosus from the north coast of Bernera Island, Lismore on the west coast of Scotland.
Copyright: Jim Anderson
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Diaphorodoris luteocincta at 36 metres on the wreck of the King Cadwallan, Hard Lewis Rocks, Isles of Scilly.
Copyright: Robert Keen
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Pair of Diaphorodoris luteocincta.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_diogra.jpg)
Common keyhole limpet Diodora graeca.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_diogra2.jpg)
Diodora graeca feeding on a sponge on the side of a rock.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_arcpse8.jpg)
Yellow eggs of Archidoris pseudoargus.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_pnewland20110329_5.jpg)
Archidoris pseudoargus
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_arcpse6.jpg)
Archidoris pseudoargus eggs in a laboratory tank.
Copyright: John Rundle
![](/assets/images/marlin/species/web/o_arcpse4.jpg)
Archidoris pseudoargus feeding on breadcrumb sponge.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_arcpse11.jpg)
A pale Archidoris pseudoargus at low tide.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_arcpse10.jpg)
An orange Archidoris pseudoargus specimen.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_arcpse7.jpg)
Close up view of Archidoris pseudoargus eggs in a laboratory tank.
Copyright: John Rundle
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Lemon-peel like eggs of Archidoris pseudoargus.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_arcpse3.jpg)
Mating sea lemons.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_arcpse5.jpg)
The egg ribbon of the sea lemon Archidoris pseudoargus.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_arcpse2.jpg)
The sea lemon Archidoris pseudoargus in rockpool.
Copyright: Anne Marie Power
![](/assets/images/marlin/species/web/o_arcpse.jpg)
The sea lemon Archidoris pseudoargus.
Copyright: Jack Sewell
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Doris sticta.
Copyright: Paul Newland
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Doris sticta on the sea floor
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_KHiscock_Doto_fragilis_WestHoe_2021-11-02.jpg)
Doto fragilis
Copyright: Dr Keith Hiscock
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Duvaucelia odhneri and eggs on the sea fan Eunicella verrucosa.
Copyright: Dr Keith Hiscock
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Duvaucelia odhneri on Eunicella verrucosa.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_trinil3.jpg)
Duvaucelia odhneri on a sea fan.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_trinil5.jpg)
Close up view of Duvaucelia odhneri on a sea fan.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_pnewland200xxxxx_1.jpg)
Sea slug Duvaucelia odhneri on sea fan Eunicella verrucosa.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_trinil4.jpg)
The sea slug Duvaucelia odhneri with its eggs.
Copyright: Dr Keith Hiscock
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Elysia viridis.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_elyvir4.jpg)
Elysia viridis crawling in a rockpool; note the characteristic bright green-blue spots.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_elyvir3.jpg)
Elysia viridis with egg ribbon on Codium spp.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_elyvir2.jpg)
Elysia viridis.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_tpearman-elysia-viridis2-2013-03-10.jpg)
Two Elysia viridis in a rockpool.
Copyright: Tabitha Pearman
![](/assets/images/marlin/species/web/o_emafis.jpg)
The slit limpet Emarginula fissura.
Copyright: Bryan Wasson
![](/assets/images/marlin/species/web/o_epicla.jpg)
Apertural view of Epitonium clathrus.
Copyright: Amgueddfa Cymru - Museum Wales
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Adapertural (back) view of Euspira catena.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_pnewland20090622.jpg)
A live necklace shell on the beach, with foot spread across substratum.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_euscat2.jpg)
Apertural view of Euspira catena.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_euscat3.jpg)
Egg collar of the necklace shell Euspira catena. Another species (probably the thick-lipped whelk) has attached its own eggs to the underside of the collar.
Copyright: Judith Oakley
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Facelina auriculata on Ulva lactuca.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_facaur4.jpg)
Facelina auriculata at Mayflower Marina.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_fcrouch20100810_3.jpg)
Facelina auriculata on Laminaria.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_facaur3.jpg)
Facelina auriculata.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_facaur5.jpg)
A Facelina auriculata with long oral tentacles.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_facaur2.jpg)
Closer view of Facelina auriculata on Ulva lactuca.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_facaur_eggs.jpg)
Spawn of Facelina auriculata.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_facbos.jpg)
Facelina bostoniensis .
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_facbos2.jpg)
Facelina bostoniensis.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_KHiscock_Fjordia_browni4_Battery_Bouy_2021-11-02.jpg)
Fjordia browni
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_KHiscock_Fjordia_brownii_Firestone_2021-11-02.jpg)
Fjordia browni on hydroids
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_KHiscock_Fjordia_lineata_Firestone_2021-11-03.jpg)
Fjordia lineata
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_KHiscock_Fjordia_lineata2_Firestone_2021-11-03.jpg)
Fjordia lineata and egg masses on erect hydroids
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_geipla.jpg)
Geitodoris planata.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_geipla2.jpg)
Geitodoris planata at Scapa Flow, Orkneys.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_MikePuleston-Gibbula-magus-230617-1.jpg)
The Turban Top Shell Gibbula magus
Copyright: Michael Puleston
![](/assets/images/marlin/species/web/o_MikePuleston-Gibbula-magus-230617-2.jpg)
Apertural view of Gibbula magus
Copyright: Michael Puleston
![](/assets/images/marlin/species/web/o_gonnod.jpg)
Goniodoris nodosa, found attached to sugar kelp on a pontoon.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_haltub.jpg)
Outer view of Haliotis tuberculata.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_sdaly20100806.jpg)
Haliotis tuberculata
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_haltub3.jpg)
Haliotis tuberculata in the Channel Isles.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_haltub4.jpg)
An empty Haliotis tuberculata shell in the Channel Isles.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_haltub2.jpg)
Inner view of Haliotis tuberculata.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_haltub5.jpg)
Underside of Haliotis tuberculata shell.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_herfor.jpg)
Hero formosa on sediment.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_jortom3.jpg)
Two specimens of Jorunna tomentosa beneath rock overhang.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_jortom.jpg)
Jorunna tomentosa on Ulva lactuca.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_jortom2.jpg)
Jorunna tomentosa, on Ulva lactuca on a marine pontoon.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_jortom_eggs.jpg)
Spawn of Jorunna tomentosa.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_jujstr.jpg)
Apertural view of Jujubinus striatus.
Copyright: Amgueddfa Cymru - Museum Wales
![](/assets/images/marlin/species/web/o_lacvin.jpg)
The banded chink snail Lacuna vincta on kelp.
Copyright: Marine Biological Association of the UK (MBA)
![](/assets/images/marlin/species/web/o_limcla.jpg)
Limacia clavigera.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_limcla3.jpg)
Limacia clavigera in a rockpool.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_limcla2.jpg)
Limacia clavigera on ascidian siphon.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_kwilkinson20110324.jpg)
An orange-clubbed sea slug.
Copyright: Kristie Wilkinson
![](/assets/images/marlin/species/web/o_litlit5.jpg)
Littorina littorea in a rock crevice.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_litlit6.jpg)
Littorina littorea showing its withdrawn operculum.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_litlit3.jpg)
Edible periwinkle Littorina littorea on sheltered vertical rock at Millport, Firth of Clyde.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_litlit7.jpg)
Lone Littorina littorea viewed from above.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_litlit2.jpg)
Three Littorina littorea on intertidal rock with limpets, barnacles and weed.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_litlit4.jpg)
Three Littorina littorea on rock under water at high tide.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_litobt.jpg)
Littorina obtusata.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_litobt5.jpg)
Littorina obtusata on Fucus sp.
Copyright: Dr Charlotte Marshall
![](/assets/images/marlin/species/web/o_litobt4.jpg)
Littorina obtusata.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_litobt2.jpg)
Collection of Littorina obtusata shells.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_litobt8.jpg)
Eggs of Littorina obtusata.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_litobt7.jpg)
Young Littorina obtusata with a distinctly banded shell.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_litsax.jpg)
Littorina saxatilis, rough periwinkles amongst barnacles, Semibalanus balanoides.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_litsax4.jpg)
Littorina saxatilis individuals in the gap between two rocks.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_litsax2.jpg)
Lone Littorina saxatilis individual on a boulder.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_litsax3.jpg)
Lone upturned Littorina saxatilis individual on a boulder
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_marhel.jpg)
The pearl top shell Margarites helicinus.
Copyright: Erling Svensen
![](/assets/images/marlin/species/web/o_marhel2.jpg)
Margarites helicinus with eggs.
Copyright: Erling Svensen
![](/assets/images/marlin/species/web/o_melner2.jpg)
Melarhaphe neritoides in high shore crevice.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_KHiscock_Microchlamylla gracilis2_Firestone_2021-11-03.jpg)
The slender sea slug Microchlamylla gracilis
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_nepant.jpg)
Neptunea antiqua.
Copyright: Scottish Natural Heritage (SNH)
![](/assets/images/marlin/species/web/o_nuclap.jpg)
Group of Nucella lapillus and eggs on an overhang (the photograph is upside-down to aid identification).
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_nuclap2.jpg)
Nucella lapillus with black and white stripes.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_nuclap4.jpg)
Nucella lapillus with egg capsules.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_nuclap9.jpg)
Nucella lapilus on a rock.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_nuclap8.jpg)
Nucella lapilus under an overhang.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_nuclap6.jpg)
Bright orange Nucella lapilus.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_bseeley20120812.jpg)
Brown and white striped Nucella lapillus on barnacles
Copyright: Becky Seeley
![](/assets/images/marlin/species/web/o_nuclap10.jpg)
Brown and white striped juvenile Nucella lapilus.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_nuclap7.jpg)
Close up view of Nucella lapilus and their eggs.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_nuclap3.jpg)
Dogwhelk on rock. Photo taken underwater.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_nuclap5.jpg)
The dog whelk Nucella lapillus, highlighting colour variation.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_dfenwick20051006_4.jpg)
Live oyster drill
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_oceeri.jpg)
Ocenebra erinacea with egg capsules.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_dfenwick20090206_10.jpg)
Aperture and ventral side of oyster drill shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20060429_2.jpg)
Egg sacs containing eggs of oyster drills
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20051006_2.jpg)
Live oyster drill
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090206_9.jpg)
Right side of oyster drill shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20060429_1.jpg)
Two oyster drills with cluster of egg sacs
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_oceeri2.jpg)
Underside of Ocenebra erinacea.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_okeele.jpg)
Okenia elegans
Copyright: Paul Naylor
![](/assets/images/marlin/species/web/o_khiscock20080415.jpg)
A front view of the yellow skirt slug
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_onccel.jpg)
The celtic sea slug Onchidella celtica.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_fcrouch20100811_10.jpg)
Onchidella celtica
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_fcrouch20100811_11.jpg)
Onchidella celtica besides a limpet and barnacles.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_onccel2.jpg)
A pair of mating Onchidella celtica.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_bseeley20120812_1.jpg)
Anterior view of a Celtic sea slug Onchidella celtica on Mytilus edulis
Copyright: Becky Seeley
![](/assets/images/marlin/species/web/o_oncbil.jpg)
Onchidoris bilamellata.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_jkakkonen20100310_2.jpg)
Onchidoris bilamellata in fucoid zone.
Copyright: Jenni Kakkonen
![](/assets/images/marlin/species/web/o_pnewland20110119_1.jpg)
Onchidoris bilamellata on muddy silt substratum.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_oncbil2.jpg)
Onchidoris bilamellata spawn.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_pnewland20110119.jpg)
A group of Onchidoris bilamellata.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_glang20110119.jpg)
An Onchidoris bilamellata aggregation.
Copyright: Gordon Lang
![](/assets/images/marlin/species/web/o_glang20110119_1.jpg)
An Onchidoris bilamellata aggregation.
Copyright: Gordon Lang
![](/assets/images/marlin/species/web/o_oncmur.jpg)
Onchidoris muricata.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_oncmur2.jpg)
Dorsal view of Onchidoris muricata.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_otiova.jpg)
Otina ovata on a rock covered by the barnacle Semibalanus balanoides.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_palnot.jpg)
Palio nothus on the seabed.
Copyright: Ruth Memmott
![](/assets/images/marlin/species/web/o_palnot2.jpg)
Curled up Palio nothus.
Copyright: Ruth Memmott
![](/assets/images/marlin/species/web/o_pallit.jpg)
Three live shells and one empty one of Paludinella globularis.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_pallit2.jpg)
One animal crawling. Eyes showing in centre of lobed tentacles.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_patdep.jpg)
The limpet Patella depressa.
Copyright: MarClim
![](/assets/images/marlin/species/web/o_patdep2.jpg)
Patella depressa with a greenish tint.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_helpel.jpg)
Patella pellucida on kelp blade.
Copyright: Marine Biological Association of the UK (MBA)
![](/assets/images/marlin/species/web/o_helpel6.jpg)
Patella pellucida in Doune.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_helpel4.jpg)
Patella pellucida on Laminaria ochroleuca.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_helpel3.jpg)
Patella pellucida on a blade of kelp.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_helpel8.jpg)
Patella pellucida on kelp showing its grazing trails.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_helpel9.jpg)
Patella pellucida on some damaged kelp.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_helpel5.jpg)
Patella pellucida on some kelp.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_helpel7.jpg)
Four Patella pellucida on kelp.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_dfenwick20060128_1.jpg)
Shell of the china limpet on rocky shore
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090228_2.jpg)
Barnacle-covered shell of the china limpet on rocky shore
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_patuly.jpg)
Foot and underside of Patella ulyssiponensis.
Copyright: MarClim
![](/assets/images/marlin/species/web/o_dfenwick20060302_1.jpg)
Inside of china limpet shell showing foot and mouth
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20060128_2.jpg)
Inside of china limpet shell with animal removed
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_patvul.jpg)
Patella vulgata on rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_patvul3.jpg)
Patella vulgata showing its muscular foot while being grasped by a dog whelk.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_patvul2.jpg)
A gathering of Patella vulgata.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_patvul4.jpg)
Four Patella vulgata individuals.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_pnewland-20120303patellavulgata.jpg)
Patella vulgata on the move; showing the muscular foot and fringing pallial tentacles
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_phiape.jpg)
Philine aperta on sediment surface.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_phiape2.jpg)
Group of Philine aperta on the sediment surface.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_pnewland20090523.jpg)
The lobe shell Philine aperta in sandy substrate.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_pnewland20090521.jpg)
The lobe shell Philine aperta, partly buried in sand.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_osilin.jpg)
Phorcus lineatus on intertidal rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_osilin6.jpg)
Phorcus lineatus on a barnacle covered rock.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_osilin9.jpg)
Phorcus lineatus on a barnacle covered rock.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_osilin8.jpg)
Phorcus lineatus on a rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_osilin7.jpg)
Phorcus lineatus upturned on a rock.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_osilin4.jpg)
Close up view of aperture.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_osilin10.jpg)
Dull-coloured Phorcus lineatus on a rocky shore.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_osilin3.jpg)
Group of Phorcus lineatus on emmersed mid shore rock.
Copyright: Dr Harvey Tyler-Walters
![](/assets/images/marlin/species/web/o_osilin2.jpg)
Two Phorcus lineatus on rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_plemem.jpg)
Pleurobranchus membranaceus at Lyme Bay.
Copyright: Mike Markey
![](/assets/images/marlin/species/web/o_plemem2.jpg)
Pleurobranchus membranaceus with eggs, Lyme Bay.
Copyright: Mike Markey
![](/assets/images/marlin/species/web/o_greele.jpg)
Polycera elegans on bryozoan.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_greele2.jpg)
Polycera elegans.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_pnewland20090714.jpg)
Closeup of Polycera faeroensis.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_polfae.jpg)
Polycera faeroensis, two individuals seen at Lundy.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_sdaly20100810_6.jpg)
Polycera faeroensis on red algae
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_polfae4.jpg)
Mating couple of Polycera faeroensis.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_polqua.jpg)
Polycera quadrilineata.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_polqua4.jpg)
Polycera quadrilineata against a black background.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_polqua3.jpg)
Polycera quadrilineata on a black background.
Copyright: Dr Hilmar Hinz
![](/assets/images/marlin/species/web/o_polqua2.jpg)
Two Polycera quadrilineata feeding on Membranipora membranacea.
Copyright: Jim Anderson
![](/assets/images/marlin/species/web/o_dfenwick20090426_1.jpg)
Aperture and spire of the common spire shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090426_2.jpg)
Right side of common spire shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_rosrub.jpg)
Rostanga rubra.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_rosrub2.jpg)
Rostanga rubra at Scapa Flow, Orkneys.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_runcor.jpg)
Runcina coronata in a rockpool.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_simpat.jpg)
The carnivorous snail Simnia patula.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_simpat4.jpg)
Simnia patula on Alcyonium digitatum.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_simpat3.jpg)
Simnia patula on Eunicella verrucosa at Lundy.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_simpat5.jpg)
Simnia patula on its prey - close up view.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_simpat6.jpg)
Simnia patula on its prey.
Copyright: Fiona Crouch
![](/assets/images/marlin/species/web/o_djones20110729_1.jpg)
Simnia patula on white sea fan
Copyright: Dylan Jones
![](/assets/images/marlin/species/web/o_simpat2.jpg)
The carnivorous snail Simnia patula with its eggs on its prey, Alcyonium digitatum.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_gibcin.jpg)
Gibbula cineraria, the grey top shell.
Copyright: Sue Daly
![](/assets/images/marlin/species/web/o_tpearman20110401.jpg)
Grey top shell Gibbula cineraria showing operculum
Copyright: Tabitha Pearman
![](/assets/images/marlin/species/web/o_gibumb.jpg)
Gibbula umbilicalis, flat top shell.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_gibumb8.jpg)
Lone Gibbula umbilicalis on a rock.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_gibumb3.jpg)
The topshell Gibbula umbilicalis amongst dog whelks.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_gibumb5.jpg)
The topshell Gibbula umbilicalis upturned on a rock showing its operculum.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_gibumb4.jpg)
The topshell Gibbula umbilicalis upturned on a rock.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_gibumb7.jpg)
Three mature Gibbula umbilicalis individuals.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_gibumb6.jpg)
Underside of Gibbula umbilicalis showing the operculum.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_gibumb9.jpg)
Varying forms of Gibbula umbilicalis - view 1.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_gibumb10.jpg)
Varying forms of Gibbula umbilicalis - view 2.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_tenads.jpg)
Tenellia adspersa crawling on Ruppia with the mollusc Rissoa membranacea.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_tenads2.jpg)
Tenellia adspersa
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_tenads3.jpg)
Two animals crawling on Zostera and Obelia.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_tectes.jpg)
The limpet Tectura testudinalis.
Copyright: MarClim
![](/assets/images/marlin/species/web/o_tectes5.jpg)
Tectura testudinalis on a barnacle covered rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_tectes4.jpg)
Tectura testudinalis on a rock.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_tectes2.jpg)
Common tortoiseshell limpet on stones at low water in Scotland.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_tectes3.jpg)
Tortoiseshell limpet, Tectura testudinalis.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_tramac.jpg)
The rare sea slug Trapania maculata.
Copyright: Rob Spray and Dawn Watson
![](/assets/images/marlin/species/web/o_dfenwick20040105_11.jpg)
Aperture and ventral side of pheasant shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20040105_12.jpg)
Right side of pheasant shell
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20040105_10.jpg)
Three pheasant shells, showing diversity in colour
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_nasinc2.jpg)
Four brownish Tritia incrassata individuals.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_nasinc.jpg)
Bright pink Tritia incrassata.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_pnewland20090622_3.jpg)
A mobile netted dog whelk displaying siphon and tentacles.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_khiscock20070824.jpg)
Tritia reticulata on gravel.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_hininc2.jpg)
Tritia reticulata with eggs at 40 m depth.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_pnewland20090523_6.jpg)
A swarm of netted dog whelks feeding on a dead spider crab.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_dfenwick20090206_4.jpg)
Aperture of the netted dog whelk
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090410_1.jpg)
Egg case of netted dog whelk showing individual eggs inside
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090223_1.jpg)
Egg cases of netted dog whelk on intertidal rock
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_hinret_eggs.jpg)
Flat, vase-shaped egg capsules of Tritia reticulata.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_dfenwick20050919_1.jpg)
Netted dog whelk on intertidal rock
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090206_3.jpg)
Shell of the netted dog whelk
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_dfenwick20090206_8.jpg)
Shell of the netted dog whelk
Copyright: David Fenwick Snr.
![](/assets/images/marlin/species/web/o_tpearman-nassarius-reticulatus3-2013-03-10.jpg)
The netted whelk on sediment.
Copyright: Tabitha Pearman
![](/assets/images/marlin/species/web/o_hininc.jpg)
The thick-lipped dog whelk Tritia reticulata.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_trihom.jpg)
Tritonia hombergi with eggs.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_trihom4.jpg)
Tritonia hombergi amongst brittle stars.
Copyright: Paul Naylor
![](/assets/images/marlin/species/web/o_trihom5.jpg)
Tritonia hombergi at Morris Rogue reef near Torbay, at 12 m depth.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_trihom6.jpg)
Tritonia hombergi at Tucker Rock near Torbay, at 13 m depth.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_trihom7.jpg)
Sea slug egg mass, probably of Tritonia hombergi.
Copyright: Paul Newland
![](/assets/images/marlin/species/web/o_trihom2.jpg)
Small Tritonia hombergi feeding on dead man's fingers Alcyonium digitatum.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_triarc.jpg)
The Arctic cowrie Trivia arctica.
Copyright: Sue Scott
![](/assets/images/marlin/species/web/o_triarc3.jpg)
Trivia arctica at Firestone Bay, Plymouth Sound.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_triarc4.jpg)
Trivia arctica in the intertidal.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_triarc2.jpg)
Arctic cowrie.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_trimon.jpg)
Trivia monacha at Scapa Flow, Orkneys.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_trimon2.jpg)
Trivia monacha at Scapa Flow, Orkneys.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_trimon7.jpg)
Trivia monacha grouped together in a crevice.
Copyright: Peter Barfield
![](/assets/images/marlin/species/web/o_trimon8.jpg)
Trivia monacha in a rockpool.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_trimon5.jpg)
Trivia monacha on the Isles of Scilly.
Copyright: Robert Keen
![](/assets/images/marlin/species/web/o_trimon6.jpg)
Trivia monacha with distinctive yellow mantle.
Copyright: MarLIN
![](/assets/images/marlin/species/web/o_hlatham200xxxxx_3.jpg)
Empty shell of the cowrie Trivia monacha.
Copyright: Holly Latham
![](/assets/images/marlin/species/web/o_trusub.jpg)
One juvenile crawling shell and 5 adults of Truncatella subcylindrica. Also one shell of Paludinella litorina.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_trusub3.jpg)
Line drawing of Truncatella subcylindrica.
Copyright: Dr R.S.K. Barnes
![](/assets/images/marlin/species/web/o_trusub2.jpg)
Two adult Truncatella subcylindrica, one crawling.
Copyright: Dennis R. Seaward
![](/assets/images/marlin/species/web/o_turcom.jpg)
Turritella communis on sediment.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_turcom4.jpg)
Turritella communis shell lying in sand.
Copyright: Dr Keith Hiscock
![](/assets/images/marlin/species/web/o_turcom5.jpg)
Turritella communis shell on a black background.
Copyright: Judith Oakley
![](/assets/images/marlin/species/web/o_turcom2.jpg)
Two Turritella communis on sediment.
Copyright: Dr Keith Hiscock
Images: 344