| Aciculidae | |
| Acicula fusca (Montagu, 1803) | Point Snail |
| Acicula sp. | |
| Acme lineata | Point Snail |
| Acme sp. | |
| Agriolimacidae | |
| Agriolimacidae sp. | |
| Agriolimax agrestis | Field (Netted?) Slug |
| Agriolimax caruanae | Caruana's Slug |
| Agriolimax laevis | Marsh Slug |
| Agriolimax reticulatus | Field (Netted?) Slug |
| Agriolimax sp. | |
| Deroceras agreste (Linnaeus, 1758) | Grey Field Slug |
| Deroceras caruanae Pilsbry, 1944 | Long-neck Field Slug |
| Deroceras hesperium Pilsbry, 1944 | Evening Field Slug |
| Deroceras heterura Pilsbry, 1944 | False Marsh Slug |
| Deroceras invadens | a slug |
| Deroceras laeve Müller, 1774 | Meadow Slug |
| Deroceras monentolophus Pilsbry, 1944 | One-ridge Field Slug |
| Deroceras panormitanum (Lessona & Pollonera, 1882) | Brown Field Slug |
| Deroceras reticulatum Müller, 1774 | Netted Slug |
| Deroceras sp. | |
| Ancylidae | |
| Acroloxus lacustris (Linnaeus, 1758) | |
| Acroloxus sp. | |
| Ancylastrum fluviatile | River Limpet |
| Ancylastrum sp. | |
| Ancylus fluviatilis Müller, 1774 | River Limpet |
| Ancylus lacustris (Linnaeus) | Lake Limpet |
| Ancylus sp. | |
| Ferrissia clessiniana | |
| Ferrissia sp. | |
| Ferrissia wautieri (Mirolli, 1960) | |
| Aplysiiidae | |
| Aplysia dactylomela Rang, 1828 | Annulated Sea-Hare |
| Aplysia depilans Gmelin, 1791 | sea hare |
| Aplysia fasciata Poiret, 1789 | mottled sea hare |
| Aplysia punctata Cuvier, 1803 | sea hare |
| Aplysia sp. Linnaeus, 1767 | |
| Arionidae | |
| Anadenulus cockerelli | American Keeled Slug |
| Anadenulus sp. | |
| Ariolimax californicus | California Banana Slug |
| Ariolimax columbianus | Pacific Banana Slug |
| Ariolimax dolichophallus | Slender Banana Slug |
| Ariolimax sp. | |
| Arion ater (Linnaeus, 1758) | Black Slug |
| Arion ater/rufus agg. | |
| Arion circumscriptus Johnston, 1828 | Brown-banded Arion |
| Arion circumscriptus agg. | Bourguignat's Slug |
| Arion distinctus Mabille, 1868 | Darkface Arion |
| Arion fasciatus Quick, 1960 | Bourguignat's Slug |
| Arion flagellus Collinge, 1893 | Durham Slug |
| Arion hortensis Férussac, 1819 | Garden Slug |
| Arion hortensis agg. | Garden Slug |
| Arion intermedius Normand, 1852 | Hedgehog Slug |
| Arion lusitanicus | Lusitanian Slug |
| Arion minimus | Hedgehog Slug |
| Arion owenii Davies, 1979 | Warty Arion |
| Arion rufus | Chocolate Arion |
| Arion silvaticus Lohmander, 1937 | Forest Arion |
| Arion sp. | |
| Arion subfuscus Draparnaud, 1805 | Dusky Slug |
| Arionidae sp. | |
| Binneya guadalupensis | Guadalupe Shelled Slug |
| Binneya notabilis | Santa Barbara Shelled Slug |
| Binneya sp. | |
| Geomalacus maculosus Allman, 1843 | Kerry Slug |
| Geomalacus sp. | |
| Gliabates oregonius | Salamander Slug |
| Gliabates sp. | |
| Hemphillia burringtoni | Keeled Jumping Slug |
| Hemphillia camelus | Pale Jumping Slug |
| Hemphillia danielsi | Marbled Jumping Slug |
| Hemphillia dromedarius | Dromedary Jumping Slug |
| Hemphillia glandulosa | Warty Jumping Slug |
| Hemphillia malonei | Malone Jumping Slug |
| Hemphillia pantherina | Panther Jumping Slug |
| Hemphillia sp. | |
| Hesperarion hemphilli | Hemphill Western Slug |
| Hesperarion mariae | Tillamook Western Slug |
| Hesperarion niger | Black Western Slug |
| Hesperarion sp. | |
| Magnipelta mycophaga | Magnum Mantle Slug |
| Magnipelta sp. | |
| Prophysaon andersoni | Reticulate Taildropper Slug |
| Prophysaon boreale | Northern Taildropper Slug |
| Prophysaon coeruleum | Blue-gray Taildropper Slug |
| Prophysaon dubium | Papillose Taildropper Slug |
| Prophysaon fasciatum | Banded Taildropper Slug |
| Prophysaon foliolatum | Yellow-bordered Taildropper Slug |
| Prophysaon humile | Smoky Taildropper Slug |
| Prophysaon obscurum | Mottled Taildropper Slug |
| Prophysaon sp. | |
| Prophysaon vanattae | Scarletback Taildropper Slug |
| Udosarx lyrata | Lyre Mantle Slug |
| Udosarx sp. | |
| Zacoleus idahoensis | Idaho Sheathed Slug |
| Zacoleus sp. | |
| Assimineidae | |
| Assiminea grayana Fleming, 1828 | Dun Sentinel |
| Assiminea littorina | |
| Assiminea sp. | |
| Paludinella littorea | |
| Paludinella littorina (delle Chiaje, 1828) | |
| Paludinella sp. | |
| Bithyniidae | |
| Bithynia leachii (Sheppard, 1823) | Leach's Bithynia |
| Bithynia sp. | |
| Bithynia tentaculata (Linnaeus, 1758) | Common Bithynia |
| Boettgerillidae | |
| Boettgerilla pallens Simroth, 1912 | Worm Slug |
| Boettgerilla sp. | |
| Boettgerilla vermiformis | Worm Slug |
| Boettgerillidae sp. | |
| Bradybaenidae | |
| Bradybaena fruticum | Bush Snail |
| Bradybaena similaris | Asian Tramp Snail |
| Bradybaena sp. | |
| Bradybaenidae sp. | |
| Fruticola fruticum | Bush Snail |
| Fruticola sp. | |
| Monadenia callipeplus | Downy Sideband Snail |
| Monadenia chaceana | Siskiyou Sideband Snail |
| Monadenia churchi | Klamath Sideband Snail |
| Monadenia circumcarinata | Keeled Sideband Snail |
| Monadenia cristulata | Crested Sideband Snail |
| Monadenia fidelis | Pacific Sideband Snail |
| Monadenia hillebrandi | Mariposa Sideband Snail |
| Monadenia infumata | Redwood Sideband Snail |
| Monadenia marmarotis | |
| Monadenia mormonum | Sierra Sideband Snail |
| Monadenia rotifer | |
| Monadenia scottiana | Scott Sideband Snail |
| Monadenia setosa | Trinity Bristle Snail |
| Monadenia sp. | |
| Monadenia troglodytes | Shasta Sideband Snail |
| Monadenia tuolumneana | Tuolumne Sideband Snail |
| Monadenia yosemitensis | Mariposa Sideband Snail |
| Buccinidae | |
| Buccinum sp. | |
| Buccinum undatum Linnaeus, 1758 | Common whelk |
| Hinia reticulata (Linnaeus, 1758) | Netted dog whelk |
| Hinia sp. | |
| Bulimulidae | |
| Bulimulidae sp. | |
| Bulimulus guadalupensis | West Indian Bulimulus |
| Bulimulus sp. Leach, 1814 | |
| Drymaeus dominicus | Master Treesnail |
| Drymaeus dormani | Manatee Treesnail |
| Drymaeus multilineatus | Lined Treesnail |
| Drymaeus sp. | |
| Liguus fasciatus | Florida Treesnail |
| Liguus sp. | |
| Naesiotus christenseni (Miller & Reeder, 1984) | Santa Rita Rabdotus |
| Naesiotus nigromontanus (Dall, 1897) | Black Mountain Rabdotus |
| Naesiotus sp. Albers, 1850 | Naesiotus species snail |
| Orthalicus floridensis | banded Treesnail |
| Orthalicus reses | Stock Island Treesnail |
| Orthalicus sp. | |
| Rabdotus alternatus (Say, 1830) | Striped Rabdotus |
| Rabdotus dealbatus (Say, 1821) | Whitewashed Rabdotus |
| Rabdotus mooreanus | Prairie Rabdotus |
| Rabdotus pilsbryi (Ferriss, 1925) | Elongate Rabdotus |
| Rabdotus sp. Albers, 1850 | Rabdotus species snail |
| Calyptraeidae | |
| Crepidula fornicata Linnaeus, 1758 | Slipper limpet |
| Crepidula sp. | |
| Cardiidae | |
| Acanthocardia aculeata (Linnaeus, 1758) | spiny cockle |
| Acanthocardia sp. | |
| Cerastodrema edulis Linnaeus, 1758 | Common cockle |
| Cerastodrema sp. | |
| Chondrinidae | |
| Abida secale (Draparnaud, 1801) | Large Chrysalis Snail |
| Abida sp. | |
| Chondrinidae sp. | |
| Clausiliidae | |
| Balea biplicata (Montagu, 1803) | Thames Door Snail |
| Balea heydeni | a snail |
| Balea perversa (Linnaeus, 1758) | Tree Snail |
| Balea sp. | |
| Clausilia bidentata (Strom, 1765) | Common Door Snail Two-toothed Door Snail |
| Clausilia biplicata | Thames Door Snail |
| Clausilia cravenensis Taylor | Craven Door Snail |
| Clausilia dubia Draparnaud, 1805 | Craven Door Snail |
| Clausilia laminata | Plaited Door Snail |
| Clausilia rolphii | Rolph's Door Snail |
| Clausilia rugosa | Common or Two-toothed Door Snail |
| Clausilia sp. | |
| Clausiliidae sp. | |
| Cochlodina laminata (Montagu, 1803) | Plaited Door Snail |
| Cochlodina sp. | |
| Laciniaria biplicata | Thames Door Snail |
| Laciniaria sp. | |
| Macrogastra rolphii (Turton, 1826) | Rolph's Door Snail |
| Macrogastra sp. | |
| Marpessa laminata | Plaited Door Snail |
| Marpessa sp. | |
| Cochlicopidae | |
| Azeca goodalli (Férussac, 1821) | |
| Azeca menkeana | Three-toothed Moss Snail |
| Azeca sp. | |
| Azeca tridens | Three-toothed Moss Snail |
| Cochlicopa lubrica | Slippery Moss Snail |
| Cochlicopa lubricella (Porro, 1838) | |
| Cochlicopa minima | |
| Cochlicopa nitens (Gallenstein, 1848) | |
| Cochlicopa sp. | |
| Cochlicopidae sp. | |
| Discidae | |
| Discidae sp. | |
| Discus rotundatus | Rounded Snail |
| Discus ruderatus (Férussac, 1821) | |
| Discus sp. | |
| Goniodiscus rotundatus | Rounded Snail |
| Goniodiscus sp. | |
| Helicodiscus singleyanus Pilsbry, 1890 | |
| Helicodiscus sp. | |
| Dreissenidae | |
| Dreissena polymorpha (Pallas, 1771) | Zebra Mussel |
| Dreissena sp. | |
| Ellobiidae | |
| Auriculinella bidentata | |
| Auriculinella sp. | |
| Carychium minimum Müller, 1774 | Herald Snail |
| Carychium sp. | |
| Carychium tridentatum (Risso, 1826) | Slender Herald Snail |
| Leuconia bidentata | |
| Leuconia sp. | |
| Leucophytia bidentata (Montagu, 1808) | |
| Leucophytia sp. | |
| Ovatella denticulata | Mouse-eared Snail |
| Ovatella myosotis (Draparnaud, 1801) | Mouse-eared Snail |
| Ovatella sp. | |
| Phytia myosotis | Mouse-eared Snail |
| Phytia sp. | |
| Enidae | |
| Ena montana (Draparnaud, 1801) | Mountain Bulin |
| Ena obscura | Lesser Bulin |
| Ena sp. | |
| Enidae sp. | |
| Merdigera obscura | Lesser Bulin |
| Merdigera sp. | |
| Zebrina detrita | a zebra snail |
| Zebrina sp. | |
| Euconulidae | |
| Euconulidae sp. | |
| Euconulus alderi (Gray, 1840) | Tawny Glass Snail |
| Euconulus fulvus | Brown Hive Snail |
| Euconulus fulvus agg. | Tawny Glass Snail |
| Euconulus sp. | |
| Ferussaciidae | |
| Cecilioides acicula | Blind Awlsnail |
| Cecilioides aperta | Obtuse Awlsnail |
| Cecilioides sp. | |
| Ferussaciidae sp. | |
| Helicidae | |
| Arianta arbustorum (Linnaeus, 1758) | Copse Snail |
| Arianta sp. | |
| Candidula gigaxii (L. Pfeiffer, 1850) | |
| Candidula intersecta (Poiret, 1801) | Wrinkled Snail |
| Candidula sp. | |
| Cepaea hortensis | White-lipped Snail |
| Cepaea nemoralis (Linnaeus, 1758) | Grove Snail |
| Cepaea sp. | |
| Cernuella sp. | |
| Cernuella virgata (da Costa, 1778) | Striped Snail |
| Cornu aspersum (Müller, 1774) | Brown Garden Snail |
| Cornu sp. Born, 1778 | Cornu species snail |
| Cryptomphalus aspersus | Garden or Common Snail |
| Cryptomphalus sp. | |
| Eobania sp. | |
| Eobania vermiculata | Chocolate-band Snail |
| Euparypha pisana | White or Sandhill Snail |
| Euparypha sp. | |
| Helicidae sp. | |
| Helicigona lapicida (Linnaeus, 1758) | Lapidary Snail |
| Helicigona sp. | |
| Helicodonta obvoluta | Cheese Snail |
| Helicodonta sp. | |
| Helicopsis sp. | |
| Helicopsis striata | |
| Helix aculeata | Prickly Snail |
| Helix aperta | Green Garden Snail |
| Helix arbustorum Linnaeus | Copse Snail |
| Helix aspersa Müller, 1774 | Garden Snail |
| Helix cantiana | Kentish Snail |
| Helix caperata | Wrinkled Snail |
| Helix cartusiana | Carthusian Snail |
| Helix ericetorum | Heath Snail |
| Helix fruticum | Bush Snail |
| Helix granulata Quoy in Gaimard, 1832 | snail |
| Helix hispida Linnaeus | Hairy Snail |
| Helix hortensis | White-lipped Snail |
| Helix itala | Heath Snail |
| Helix lamellata | Plated Snail |
| Helix lapicida Linnaeus | Lapidary Snail |
| Helix limbata | Hedge Snail |
| Helix nemoralis Linnaeus | Grove or Brown-lipped Snail |
| Helix obvoluta | Cheese Snail |
| Helix pomatia Linnaeus, 1758 | Roman Snail |
| Helix revelata | Green Snail |
| Helix rotundata | Rounded Snail |
| Helix rufescens | Strawberry Snail |
| Helix rupestris | Rock Snail |
| Helix sp. | |
| Helix striolata | Strawberry Snail |
| Helix terrestris | Top Snail |
| Helix virgata | Striped or Zoned Snail |
| Hygromia cinctella (Draparnaud, 1801) | Girdled Snail |
| Hygromia fusca | Brown Snail |
| Hygromia hispida (Linnaeus) | Hairy Snail |
| Hygromia liberta | |
| Hygromia limbata (Draparnaud, 1805) | Hedge Snail |
| Hygromia revelata | Green Snail |
| Hygromia rufescens | Strawberry Snail |
| Hygromia sp. | |
| Hygromia striolata | Strawberry Snail |
| Hygromia subrufescens | Brown Snail |
| Hygromia subvirescens | Green Snail |
| Levantina sp. | Levantina species snail |
| Levantina spiriplana (Olivier, 1801) | |
| Otala lactea | Milk Snail |
| Otala sp. | |
| Perforatella rubiginosa (Rossmassler, 1838) | German Hairy Snail |
| Perforatella sp. | |
| Perforatella subrufescens (Miller, 1822) | Brown Snail |
| Ponentina sp. | |
| Ponentina subvirescens (Bellamy, 1839) | Green Snail |
| Pseudotrichia rubiginosa | |
| Pseudotrichia sp. | |
| Theba pisana (O.F. Müller, 1774) | White Snail |
| Theba sp. Risso, 1826 | Theba species snail |
| Theba subdentata Férussac, 1821 | snail |
| Trichia hispida (Linnaeus, 1758) | Hairy Snail |
| Trichia plebeia (Draparnaud, 1805) | |
| Trichia sp. | |
| Trichia striolata (Pfeiffer, 1828) | Strawberry Snail |
| Trichia subvirescens | Green Snail |
| Trochoidea elegans (Gmelin, 1791) | Top Snail |
| Trochoidea geyeri (Soós, 1926) | |
| Trochoidea sp. | |
| Zenobiella sp. | |
| Zenobiella subrufescens | Brown Snail |
| Hydatinidae | |
| Micromelo sp. | |
| Micromelo undata (Bruguière, 1792) | |
| Hydrobiidae | |
| Amnicola confusa | Swollen Spire Snail |
| Amnicola sp. | |
| Amnicola taylori | Taylor's Spire Snail |
| Bythinella scholtzi | Taylor's Spire Snail |
| Bythinella sp. | |
| Bythinella steinii | Taylor's Spire Snail |
| Heleobia sp. | |
| Heleobia stagnorum (Gmelin, 1791) | |
| Hydrobia anatina | Swollen Spire Snail |
| Hydrobia jenkinsi | Jenkins' Spire Snail |
| Hydrobia neglecta Muus, 1963 | |
| Hydrobia similis | Swollen Spire Snail |
| Hydrobia sp. | |
| Hydrobia stagnalis | Laver Spire Snail |
| Hydrobia stagnorum (Gmelin) | |
| Hydrobia ulvae (Pennant, 1777) | Laver Spire Snail |
| Hydrobia ventrosa (Montagu, 1803) | Spire Snail |
| Marstoniopsis scholtzi (A Schmidt, 1856) | Taylor's Spire Snail |
| Marstoniopsis sp. | |
| Mercuria confusa (Frauenfeld, 1863) | Swollen Spire Snail |
| Mercuria sp. | |
| Paludestrina confusa | Swollen Spire Snail |
| Paludestrina sp. | |
| Paludestrina stagnalis | Laver Spire Snail |
| Paludestrina taylori | Taylor's Spire Snail |
| Paludestrina ventrosa | Spire Snail |
| Peringia sp. | |
| Peringia ulvae | Laver Spire Snail |
| Potamopyrgus antipodarum (Gray, 1840) | Jenkins' Spire Snail |
| Potamopyrgus jenkinsi | Jenkins' Spire Snail |
| Potamopyrgus sp. | |
| Sabanaea sp. | |
| Sabanaea ulvae | Laver Spire Snail |
| Semisalsa sp. | |
| Semisalsa stagnorum (Gmelin) | |
| Ventrosia sp. | |
| Ventrosia ventrosa | Spire Snail |
| Hygromiidae | |
| Ashfordia granulata Turton & Gray, 1840 | Silky Snail |
| Ashfordia sp. | |
| Cochlicella acuta | Pointed Snail |
| Cochlicella barbara | Pointed Snail |
| Cochlicella sp. | |
| Cochlicella ventricosa | |
| Helicella caperata | Wrinkled Snail |
| Helicella elegans (Gmelin) | Top Snail |
| Helicella geyeri | |
| Helicella gigaxii | |
| Helicella heripensis | |
| Helicella itala (Linnaeus, 1758) | Heath Snail |
| Helicella obvia | Heath Helicellid |
| Helicella sp. | |
| Helicella striata | |
| Helicella virgata | Striped or Zoned Snail |
| Hygromiidae sp. | |
| Monacha cantiana (Montagu, 1803) | Kentish Gardensnail |
| Monacha cartusiana (O.F. Müller, 1774) | Carthusian Snail |
| Monacha granulata Alder, 1830 | snail |
| Monacha sp. | |
| Ischnochitonidae | |
| Lepidochitona cinereus Linnaeus, 1767 | Coat-of-mail shell |
| Lepidochitona sp. | |
| Limacidae | |
| Ambigolimax nyctelius (Bourguignat, 1861) | |
| Ambigolimax sp. Pollonera, 1887 | Ambigolimax species slug |
| Ambigolimax valentianus (A. Férussac, 1822) | |
| Lehmannia marginata | Tree Slug |
| Lehmannia sp. | |
| Lehmannia valentiana (Férussac, 1821) | Greenhouse Slug |
| Limacidae sp. | |
| Limacus flavus (Linnaeus) | Yellow Slug |
| Limacus maculatus (Kaleniczenko, 1851) | |
| Limacus sp. | |
| Limax arborum | Tree Slug |
| Limax cinereoniger Wolf, 1803 | Ash-black Slug |
| Limax flavus Linnaeus, 1758 | Yellow Garden Slug |
| Limax grossui | |
| Limax maculatus (Kaleniczenko, 1851) | |
| Limax marginatus | Tree Slug |
| Limax maximus Linnaeus, 1758 | Giant Garden Slug |
| Limax nyctelius | False Tree Slug |
| Limax poirieri | Greenhouse Slug |
| Limax pseudoflavus | |
| Limax sp. Lehmann, 1864 | Limax species slug |
| Limax tenellus | Slender Slug |
| Limax valentianus | Three-band Garden Slug |
| Malacolimax sp. | |
| Malacolimax tenellus | Slender Slug |
| Littorinidae | |
| Littorina littorea Linnaeus, 1758 | edible winkle |
| Littorina mariae | Periwinkle |
| Littorina obtusata Linnaeus, 1758 | Flat winkle |
| Littorina saxatilis (Olivi, 1792) | Rough winkle |
| Littorina sp. | |
| Lymnaeidae | |
| Galba sp. | |
| Galba truncatula | Dwarf Pond Snail |
| Lymnaea auricularia (Linnaeus, 1758) | Ear Pond Snail |
| Lymnaea glabra | Mud Pond Snail |
| Lymnaea glutinosa | Glutinous Snail |
| Lymnaea ovata | Wandering Pond Snail |
| Lymnaea palustris | Marsh Pond Snail |
| Lymnaea peregra | Wandering Pond Snail |
| Lymnaea sp. | |
| Lymnaea stagnalis (Linnaeus, 1758) | Great Pond Snail |
| Lymnaea truncatula | Dwarf Pond Snail |
| Myxas glutinosa | Glutinous Snail |
| Myxas sp. | |
| Radix auricularia (Linnaeus) | Ear Pond Snail |
| Radix peregra | Wandering Pond Snail |
| Radix sp. | |
| Stagnicola glabra | Mud Pond Snail |
| Stagnicola palustris | Marsh Pond Snail |
| Stagnicola sp. | |
| Margaritiferidae | |
| Margaritana margaritifera (Linnaeus) | Freshwater Pearl Mussel |
| Margaritana sp. | |
| Margaritifera auricularia (Spengler, 1793) | |
| Margaritifera durrovensis | Freshwater Pearl Mussel |
| Margaritifera margaritifera (Linnaeus, 1758) | Freshwater Pearl Mussel |
| Margaritifera sp. | |
| Pseudunio auricularia | |
| Pseudunio sp. | |
| Milacidae | |
| Milacidae sp. | |
| Milax budapestensis | Budapest Slug |
| Milax gagates | Jet Slug |
| Milax gigates (Draparnaud, 1801) | Jet Slug |
| Milax gracilis | Budapest Slug |
| Milax marginatus | |
| Milax rusticus | |
| Milax sowerbyi | Keeled Slug |
| Milax sp. | |
| Tandonia budapestensis (Hazay, 1881) | Budapest Slug |
| Tandonia rustica (Millet, 1843) | |
| Tandonia sowerbyi (Férussac, 1823) | Keeled Slug |
| Tandonia sp. | |
| Muricidae | |
| Nucella lapillus Linnaeus, 1758 | Dog whelk |
| Nucella sp. | |
| Urosalpinx cinerea (Say, 1822) | Eastern Oyster Drill Shell |
| Urosalpinx sp. | |
| Myidae | |
| Mya arenaria Linnaeus, 1758 | Sand gaper |
| Mya sp. | |
| Mytilidae | |
| Mytilus edulis Linnaeus, 1758 | Common mussel |
| Mytilus sp. | |
| Neritidae | |
| Neritina fluviatilis (Linnaeus) | River Nerite |
| Neritina sp. | |
| Theodoxus fluviatilis (Linnaeus, 1758) | River Nerite |
| Theodoxus sp. | |
| Ostreidae | |
| Crassostrea gigas Thunberg, 1793 | Pacific Oyster |
| Crassostrea sp. | |
| Ostrea edulis Linnaeus, 1758 | Native oyster |
| Ostrea sp. | |
| Patellidae | |
| Patella sp. | |
| Patella vulgata Linnaeus, 1758 | Common limpet |
| Petricolidae | |
| Petricola pholadiformis Lamarck, 1818 | American Paddock |
| Petricola sp. | |
| Pharidae | |
| Ensis ensis Schumacher, 1817 | Common razor shell |
| Ensis sp. | |
| Pholadidae | |
| Pholas dactylus Linnaeus, 1758 | Common piddock |
| Pholas sp. | |
| Physidae | |
| Aplexa hypnorum (Linnaeus, 1758) | Moss Bladder Snail |
| Aplexa sp. | |
| Physa fontinalis (Linnaeus, 1758) | Common Bladder Snail |
| Physa hypnorum (Linnaeus) | Moss Bladder Snail |
| Physa sp. Kerney, 1999 | Bladder Snail sp. |
| Planorbidae | |
| Anisus leucostoma (Millet, 1813) | White-lipped Ram's-horn |
| Anisus sp. | |
| Anisus vortex (Linnaeus, 1758) | Whirlpool Ram's-horn |
| Anisus vorticulus (Troschel, 1834) | |
| Armiger crista (Linnaeus) | Nautilus Ram's-horn |
| Armiger sp. | |
| Bathyomphalus contortus (Linnaeus, 1758) | Twisted Ram's-horn |
| Bathyomphalus sp. | |
| Gyraulus acronicus (Férussac, 1807) | Thames Ram's-horn |
| Gyraulus albus | White Ram's-horn |
| Gyraulus crista (Linnaeus, 1758) | Nautilus Ram's-horn |
| Gyraulus laevis (Alder, 1838) | Smooth Ram's-horn |
| Gyraulus sp. | |
| Hippeutis complanatus (Linnaeus, 1758) | Flat Ram's-horn |
| Hippeutis sp. | |
| Menetus dilatatus (Gould, 1841) | Trumpet Ram's-horn |
| Menetus sp. | |
| Planorbarius corneus (Linnaeus, 1758) | Great Ram's-horn |
| Planorbarius sp. | |
| Planorbis acronicus | Thames Ram's-horn |
| Planorbis albus | White Ram's-horn |
| Planorbis carinatus Müller, 1774 | Keeled Ram's-horn |
| Planorbis complanatus (Linnaeus) | Flat Ram's-horn / Margined Ram's-horn |
| Planorbis contortus (Linnaeus) | Twisted Ram's-horn |
| Planorbis corneus (Linnaeus) | Great Ram's-horn |
| Planorbis crista (Linnaeus) | Nautilus Ram's-horn |
| Planorbis dilatatus | Trumpet Ram's-horn |
| Planorbis fontanus | Flat Ram's-horn |
| Planorbis glaber | Smooth Ram's-horn |
| Planorbis laevis | Smooth Ram's-horn |
| Planorbis leucostoma | White-lipped Ram's-horn |
| Planorbis lineatus Walker | Shining Ram's-horn |
| Planorbis marginatus | Margined Ram's-horn |
| Planorbis nautileus (Linnaeus) | Nautilus Ram's-horn |
| Planorbis planorbis (Linnaeus, 1758) | Margined Ram's-horn |
| Planorbis sp. | |
| Planorbis spirorbis | White-lipped Ram's-horn |
| Planorbis umbilicatus | Margined Ram's-horn |
| Planorbis vortex (Linnaeus) | Whirlpool Ram's-horn |
| Planorbis vorticulus | |
| Segmentina complanata (Linnaeus) | Flat Ram's-horn |
| Segmentina lineata | Shining Ram's-horn |
| Segmentina nitida | Shining Ram's-horn |
| Segmentina sp. | |
| Pomatiasidae | |
| Cyclostoma elegans | Round-mouthed Snail |
| Cyclostoma sp. | |
| Pomatias elegans | Round-mouthed Snail |
| Pomatias sp. | |
| Punctidae | |
| Paralaoma caputspinulae (Reeve, 1852) | Pinhead Spot Snail |
| Paralaoma sp. | |
| Pleuropunctum micropleurum | |
| Pleuropunctum sp. | |
| Punctidae sp. | |
| Punctum pusillum | |
| Punctum pygmaeum (Draparnaud, 1801) | Dwarf Snail |
| Punctum sp. | |
| Toltecia pusilla | |
| Toltecia sp. | |
| Pupillidae | |
| Lauria anglica | English Chrysalis Snail |
| Lauria cylindracea (da Costa, 1778) | Common Chrysalis Snail |
| Lauria sempronii (Charpentier, 1837) | |
| Lauria sp. | |
| Leiostyla anglica (Wood, 1828) | English Chrysalis Snail |
| Leiostyla sp. | |
| Pupa anglica | English Chrysalis Snail |
| Pupa marginata | Moss Chrysalis Snail |
| Pupa secale | Large Chrysalis Snail |
| Pupa sp. | |
| Pupa umbilicata | Common Chrysalis Snail |
| Pupilla muscorum (Linnaeus, 1758) | Moss Chrysalis Snail |
| Pupilla sp. | |
| Pupillidae sp. | |
| Vertigo alpestris Alder, 1838 | Mountain Whorl Snail |
| Vertigo angustior Jeffreys, 1830 | Narrow-mouthed Whorl Snail |
| Vertigo antivertigo (Draparnaud, 1801) | Marsh Whorl Snail |
| Vertigo arctica | |
| Vertigo britannica | British Whorl Snail |
| Vertigo cylindrica | Cylindrical Whorl Snail |
| Vertigo edentula | Toothless Chrysalis Snail |
| Vertigo genesii | |
| Vertigo geyeri Lindholm, 1925 | |
| Vertigo lilljeborgi (Westerlund, 1871) | Lilljeborg's Whorl Snail |
| Vertigo modesta (Say, 1824) | Cross Vertigo Snail |
| Vertigo moulinsiana (Dupuy, 1849) | Desmoulins' Whorl Snail |
| Vertigo pusilla Müller, 1774 | Wall Whorl Snail |
| Vertigo pygmaea (Draparnaud, 1801) | Common Whorl Snail |
| Vertigo sp. | |
| Vertigo substriata (Jeffreys, 1833) | Striated Whorl Snail |
| Pyramidulidae | |
| Pyramidula rotundata | Rounded Snail |
| Pyramidula rupestris (Draparnaud, 1801) | Rock Snail |
| Pyramidula sp. | |
| Pyramidulidae sp. | |
| Sphaeriidae | |
| Musculium lacustre | Capped Orb Mussel |
| Musculium sp. | |
| Musculium transversum (Say, 1829) | Oblong Orb Mussel |
| Pisidium amnicum | Giant Pea Shell |
| Pisidium casertanum (Poli, 1791) | |
| Pisidium cinereum | |
| Pisidium conventus Clessin, 1877 | |
| Pisidium henslowanum (Sheppard, 1823) | |
| Pisidium hibernicum Westerlund, 1894 | |
| Pisidium lilljeborgii Clessin, 1886 | |
| Pisidium milium Held, 1836 | Rosy Pea Shell |
| Pisidium moitessierianum Paladilhe, 1866 | |
| Pisidium nitidum Jenyns, 1832 | |
| Pisidium obtusale (Lamarck, 1818) | |
| Pisidium parvulum | |
| Pisidium personatum Malm, 1855 | |
| Pisidium pseudosphaerium Schlesch, 1947 | |
| Pisidium pulchellum Jenyns, 1832 | |
| Pisidium sp. | |
| Pisidium stewarti | |
| Pisidium subtruncatum Malm, 1855 | |
| Pisidium supinum A. Schmidt, 1851 | |
| Pisidium tenuilineatum Stelfox, 1918 | |
| Pisidium torquatum | |
| Pisidium vincentianum B.B. Woodward, 1913 | |
| Sphaerium corneum (Linnaeus, 1758) | Horny Orb Mussel |
| Sphaerium lacustre | Lake or Capped Orb Mussel |
| Sphaerium nucleus | Swamp Orb Mussel |
| Sphaerium ovale | Oblong Orb Mussel |
| Sphaerium pallidum Gray | Oblong Orb Mussel |
| Sphaerium rivicola (Lamarck, 1818) | River Orb Mussel |
| Sphaerium solidum (Normand, 1844) | |
| Sphaerium sp. | |
| Sphaerium transversum (Say) | Oblong Orb Mussel |
| Subulinidae | |
| Rumina decollata (Linnaeus, 1758) | Decollate snail |
| Rumina sp. (Risso, 1826) | |
| Succineidae | |
| Catinella arenaria (Bouchard-Chantereaux, 1837) | Sand Amber Snail |
| Catinella sp. | |
| Oxyloma elegans | Pfeiffer's Amber Snail |
| Oxyloma pfeifferi (Rossmassler, 1835) | Pfeiffer's Amber Snail |
| Oxyloma sarsi (Esmark, 1886) | Slender Amber Snail |
| Oxyloma sp. | |
| Succinea elegans | Slender Amber Snail |
| Succinea oblonga Draparnaud, 1801 | Small Amber Snail |
| Succinea pfeifferi | Pfeiffer's Amber Snail |
| Succinea putris (Linnaeus, 1758) | Amber Snail |
| Succinea sp. | |
| Succineidae sp. | |
| Succinia arenaria | Sand Amber Snail |
| Succinia sp. | |
| Semelidae | |
| Scrobicularia plana da Costa, 1778 | Peppery furrow shell |
| Scrobicularia sp. | |
| Testacellidae | |
| Testacella haliotidea Draparnaud, 1801 | Shelled Slug |
| Testacella maugei Férussac, 1819 | Mauge's Slug |
| Testacella scutulum Sowerby, 1821 | Shield Slug |
| Testacella sp. | |
| Testacellidae sp. | |
| Trochidae | |
| Gibbula cineraria Linnaeus, 1758 | Grey top shell |
| Gibbula sp. | |
| Gibbula umbilicalis da Costa, 1778 | Purple top shell |
| Truncatellidae | |
| Acmea sp. | |
| Acmea subcylindrica (Linnaeus) | Looping Snail |
| Truncatella sp. | |
| Truncatella subcylindrica (Linnaeus, 1758) | Looping Snail |
| Tylodinidae | |
| Tylodina perversa (Gmelin, 1791) | |
| Tylodina sp. | |
| Unionidae | |
| Anodonta anatina (Linnaeus, 1758) | Duck Mussel |
| Anodonta cygnea (Linnaeus, 1758) | Swan Mussel |
| Anodonta elongata | Compressed River Mussel |
| Anodonta minima | Compressed River Mussel |
| Anodonta piscinalis | Duck Mussel |
| Anodonta sp. | |
| Pseudanodonta complanata (Rossmassler, 1835) | Compressed River Mussel |
| Pseudanodonta rothomagensis | Compressed River Mussel |
| Pseudanodonta sp. | |
| Unio margaritifera (Linnaeus) | Freshwater Pearl Mussel |
| Unio pictorum (Linnaeus, 1758) | Painter's Mussel |
| Unio sinuatus | |
| Unio sp. | |
| Unio tumidus Philipsson, 1788 | Swollen River Mussel |
| Valloniidae | |
| Acanthinula aculeata | Prickly Snail |
| Acanthinula lamellata | Plated Snail |
| Acanthinula sp. | |
| Spermodea lamellata (Jeffreys, 1830) | Plated Snail |
| Spermodea sp. | |
| Vallonia costata | Ribbed Grass Snail |
| Vallonia excentrica Sterki, 1892 | Eccentric Grass Snail |
| Vallonia pulchella | Smooth Grass Snail |
| Vallonia sp. | |
| Valloniidae sp. | |
| Valvatidae | |
| Valvata cristata Müller, 1774 | Flat Valve Snail |
| Valvata macrostoma Morch, 1864 | Large-mouthed Valve Snail |
| Valvata piscinalis | Common Valve Snail |
| Valvata pulchella | Large-mouthed Valve Snail |
| Valvata sp. | |
| Veneridae | |
| Mercenaria mercenaria (Linnaeus, 1758) | American Hard Clam |
| Mercenaria sp. | |
| Vertiginidae | |
| Columella aspera Walden, 1966 | |
| Columella columella (Martens, 1830) | Mellow Column Snail |
| Columella edentula (Draparnaud, 1805) | Toothless Chrysalis Snail |
| Columella edentula agg. | Toothless Chrysalis Snail |
| Columella sp. | |
| Truncatellina britannica | Pilsbry British Whorl Snail |
| Truncatellina callicratis (Scacchi, 1833) | British Whorl Snail |
| Truncatellina cylindrica (Férussac, 1807) | Cylindrical Whorl Snail |
| Truncatellina sp. | |
| Vertiginidae sp. | |
| Vitrinidae | |
| Phenacolimax major (Férussac, 1807) | Greater Pellucid Glass Snail |
| Phenacolimax sp. | |
| Plutonia lamarckii | |
| Plutonia sp. | |
| Semilimax pyrenaicus (Férussac, 1821) | Pyrenean Glass Snail |
| Semilimax sp. | |
| Vitrina hibernica Taylor | Pyrenean Glass Snail |
| Vitrina major | Greater Pellucid Glass Snail |
| Vitrina pellucida | Pellucid Glass Snail |
| Vitrina pyrenaica | Pyrenean Glass Snail |
| Vitrina sp. | |
| Vitrinidae sp. | |
| Viviparidae | |
| Paludina contecta | Lister's River Snail |
| Paludina sp. | |
| Paludina vivipara (Linnaeus) | Common River Snail |
| Viviparus contectus (Millet, 1813) | Lister's River Snail |
| Viviparus sp. | |
| Viviparus viviparus (Linnaeus, 1758) | Common River Snail |
| Zonitidae | |
| Aegopinella nitidula (Draparnaud, 1805) | Smooth Glass Snail |
| Aegopinella pura (Alder, 1830) | Clear Glass Snail |
| Aegopinella sp. | |
| Hyalinia alliaria | Garlic Snail |
| Hyalinia cellaria | Cellar Snail |
| Hyalinia crystallina | Crystal Snail |
| Hyalinia fulva | Tawny Glass Snail |
| Hyalinia helvetica | Glossy Glass Snail |
| Hyalinia lucida | Darparnaud's Glass Snail |
| Hyalinia nitidula | Smooth Glass Snail |
| Hyalinia pura | Clear Glass Snail |
| Hyalinia radiatula | Rayed Glass Snail |
| Hyalinia rogersi | Glossy Glass Snail |
| Hyalinia sp. | |
| Nesovitrea hammonis (Strom, 1765) | Rayed Glass Snail |
| Nesovitrea petronella (L. Pfeiffer, 1853) | |
| Nesovitrea sp. | |
| Oxychilus alliarius (Miller, 1822) | Garlic Snail |
| Oxychilus cellarius | Cellar Snail |
| Oxychilus draparnaudi (Beck, 1837) | Darparnaud's Glass Snail |
| Oxychilus helveticus (Blum, 1881) | Glossy Glass Snail |
| Oxychilus lucidus | Darparnaud's Glass Snail |
| Oxychilus sp. | |
| Retinella nitidula | Smooth Glass Snail |
| Retinella pura | Clear Glass Snail |
| Retinella radiatula | Rayed Glass Snail |
| Retinella sp. | |
| Vitrea contracta (Westerlund, 1871) | Milky Crystal Snail |
| Vitrea crystallina | Crystal Snail |
| Vitrea diaphana | |
| Vitrea sp. | |
| Vitrea subrimata (Reinhardt, 1871) | |
| Zonitidae sp. | |
| Zonitoides excavatus (Alder, 1830) | Hollowed Glass Snail |
| Zonitoides nitidus | Shiny Glass Snail |
| Zonitoides sp. | |
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