Molluscs of Southern California
(Click on images or names to open). Yellow background
= Introduced species
Photographed and compiled by Peter J.
Bryant (pjbryant@uci.edu) Department of
Developmental and Cell Biology, University of California, Irvine, CA 92697
and some guests |
Bivalvia |
Cardiidae |
Chamidae |
Galeommatidae |
Limidae |
Lyonsiidae |

Pacific eggcockle,
Laevicardium substriatum
|

Pacific
Jewelbox,
Pseudochama exogyra
|

Internally-shelled clam,
Chlamydoconcha orcutti |

Hemphill Fileclam,
Limaria hemphilli |

California Lyonsia,
Lyonsia californica |
Mactridae |
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Pacific Gaper Clam,
Tresus nuttallii |
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Mytilidae |
|
 Quagga Mussel,
Dreissena rostriformis bugensis |

Ribbed Mussel,
Geukensia demissa |

Asian
date mussel,
Musculista senhousia |

California Mussel,
Mytilus californianus |
Mediterranean Mussel,
Mytilus gallopovincialis
|
Ostreidae |
Pectinidae |
 Olympia Oyster,
Ostrea conchaphila (= lurida?) |
 Pacific Oyster,
Crassostrea gigas |

Giant
Rock Scallop,
Crassadoma gigantea |

Speckled Scallop,
Argopecten ventricosa |

Kelp Scallop,
Leptopecten latiauratus |
Petricolidae |
Pholadidae |
|
Semelidae |

Hearty Petricolid,
Petricola carditoides (?) |

Rough Piddock,
Zirfaea pilbryi |
|

Asian Semele,
Theora lubrica |

Clipped semele,
Semele decisa |
Solecurtidae |
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Tellinidae |

Neighbor Tagelus,
Tagelus affinis |

California
Jack-knife Clam,
Tagelus californianus |

Lesser Tagelus,
Tagelus subteres |
|

Bent-nosed Clam,
Macoma nasuta |
Veneridae |
|
Ungulinidae |

Pacific
Littleneck,
Leukoma staminea |

Japanese
Littleneck,
Venerupis philippinarum |

California
Butter Clam,
Saxidomus nuttalli |
|
Orb Diplodon,
Diplodonta orbella
|
Cephalopoda |

Squid,
Loligo (opalescens?) juvenile |

California two-spot Octopus,
Octopus bimaculoides
|

Octopus |
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Gastropoda |
Archaeogastropoda |
Archaeopulmonata |
Fissurellidae |
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Ellobiidae |

Volcano Limpet,
Fissurella volcano |

Giant Keyhole Limpet,
Megathura crenulata |
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Salt Marsh Snail,
Melampus olivaceus |
Patellogastropoda |
|
Lottiidae |

Southern Finger
Limpet,
Lottia austrodigitalis |

Rough Limpet,
Lottia scabra |

Owl Limpet,
Lottia gigantea |

File
Limpet,
Lottia limatula |

Painted Limpet,
Tectura depicta |
Order Littorinimorpha |
|
Atlantidae |
Cypraeidae (cowries) |
Hydrobiidae |
Littorinidae |

Sea snail,
Atlanta californiensis |

Chestnut Cowrie,
Neobernaya spadicea |

New
Zealand Mud Snail,
Potamopyrgus antipodarum |

Checkered
Periwinkle,
Littorina scutulata |

Gray
Littorine,
Littorina planaxis
|
Calyptraeidae (Slipper snails and others) |

Slipper Limpet,
Crepidula cf perforans |

Slipper limpet,
Crepidula naticarum |

Onyx Slipper Limpet,
Crepidula onyx |

Pacific Half-slippersnail,
Crepipatella lingulata |

Spiny cup-and-saucer snail, Crucibulum spinosum |
Naticidae |
Pterotracheidae |
Triviidae |

Smooth Brown Turban
(Norris' Top Shell), Norrisia norrisi |

Moon Snail,
Neverita reclusiana |
Sea elephant,
Firoloida desmarestia.
|

Coffee Bean Snail,
Pseudopusula californiana |

Solander's Trivia,
Pusula solandri |
Vermetidae |
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Scaly
Worm Shell,
Thylacodes squamigerus
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Nudibranchiata |
Aegiridae |
Aeolidiidae |
Chromodorididae |

Salt-and-pepper Doris,
Aegires albopunctatus |

Shaggy Mouse Nudibranch,
Aeolidia papillosa |

Red-tentacled Spurilla,
Spurilla oliviae
|
 California Blue Dorid,
Felimare californiensis |

Porter's Chromodorid Nudibranch,
Mexichromis porterae
|
Corambidae |
Dendrodorididae |
Dendronotidae |

Frost-spot Nudibranch,
Corambe pacifica
|

Steinberg's Corambe
Corambe steinbergae
|

White-spotted sea goddess.
Doriopsilla albopunctata |

Doriopsilla davebehrensi |

Branched Dendronotus,
Dendronotus venustus |
Dironidae |
Discodorididae |
Dorididae |
|

Painted Dirona,
Dirona picta |

Sea Lemon,
Peltodoris nobilis |

San Diego Dorid,
Diaulula sandiegensis |

Monterey Sea Lemon,
Doris montereyensis |
|
Dotidae |
Facelinidae |
Fionidae |
|

Hammerhead Doto,
Doto amyra |

British Columbia Doto,
Doto columbiana |

Opalescent Sea Slug,
Hermissenda opalescens
|
Fiona nudibranch,
Fiona pinnata |
|
Flabellinidae |
|

Bertsch's Aeolid,
Flabellina bertschi |

Spanish shawl,
Flabellina iodinea
|

Three-lined aeolid,
Flabellina trilineata |

Red-gilled Nudibranch,
Flabellina verrucosa |
|
Goniodorididae |
|

Atlantic Ancula,
Ancula gibbosa |

Pacific Ancula,
Ancula pacifica |

Angeles okenia
Okenia angelensis |

Hopkin's Rose,
Okenia rosacea |
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Onchidorididae |
Plakobranchidae |
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Black-tipped Spiny Doris,
Acanthodoris rhodoceras |

Hedgpeth's sea hare,
Elysia hedgpeth
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Polyceratidae |

Cockerell's Dorid,
Limacia cockerelli
|

McDonald's Dorid,
Limacia mcdonaldi |

Sorcerer's Nudibranch,
Polycera atra |

Hedgpeth's dorid,
Polycera hedgpethi |

Speckled Triopha,
Triopha maculata |
Tethyidae |
Trinchesiidae |
Zephyrinidae |
|
|
a.jpg)
Hooded Nudibranch,
Melibe leonina |

White-crusted Aeolid,
Tenellia (=Cuthona) albocrusta |

Cockscomb Nudibranch,
Janolus barbarensis
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Opisthobranchia |
Acteonidae |
Aglajidae |
Aplysiidae |
Striped Barrel Snail,
Rictaxis punctocaelatus |

Striped Sea Hare,
Navanax inermis |

Sea Hare,
Aplysia
californica
|
California
Black Sea
Hare,
Aplysia vaccaria |

Eelgrass Sea Hare,
Phyllaplysia taylori |
Bullidae |
Hermaeidae |
Haminoeidae |
Limapontidae |
Pyramidellidae |
Bubble Snail,
Bulla gouldiana |
Enteromorpha-eating Sapsucker,
Aplysiopsis enteromorpha |

Blister Glassy-bubble,
Haminoea vesicula
|

Brown-streak Stiliger,
Stiliger fuscovittatus |

Adams' pyram,
Pyramidella adamsi |
Tylodinidae |
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Sidegill Slug,
Tylodina fungina |
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Order Neogastropoda |
Conidae |
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California Cone
Snail,
Conus californicus |
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Muricidae |
Angular Unicorn,
Acanthinucella spirata |

Belcher's Murex,
Forreria belcheri |

Gem Murex,
Maxwellia gemma |

Rock snail,
(Mexacanthina lugubris?) |

Striped Dogwinkle,
Nucella emarginata |

Festive Murex,
Pteropurpura festiva |

Poulson's Dwarf Triton,
Roperia poulsoni |
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Nassariidae |
Potamididae |
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Channeled Basket Snail,
Nassarius fossatus |

Nassa Mud Snail,
Nassarius sp. |

California Horn Snail,
Cerithideopsis californica |
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Order Stylommatophora |
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Helicidae |
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Subulinidae |
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European Garden Snail,
Cornu aspersum |

Spanish Snail,
Otala lactea |
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Decollate Snail,
Rumina decollata |
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Polyplacophora |
Pulmonata (Land snails) |
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Mopaliidae |
Lepidochitonidae |
Xantonychidae |
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Mossy Chiton,
Mopalia
muscosa |

Southern
Spiny Chiton,
Nuttallina fluxa |

Southern California Shoulderband, Helminthoglypta tudiculata |
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Vetigastropoda |
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Haliotidae |
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Black Abalone,
Haliotis cracherodii |

Green Abalone,
Haliotis fulgens |

Red Abalone,
Haliotis rufescens |

Threaded Abalone, Haliotis kamtschatkana assimilis
|
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Trochidae |
Turbinidae |
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Speckled Turban,
Tegula gallina |

Black Turban,
Tegula funebralis |

Wavy Top Turban,
Astraea undosa |
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Thecosomata: Desmopteridae |
Discidae |
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Sea Butterfly,
Desmopterus pacificus |

Rotund Disc,
Discus rotundatus |
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