Following is a list of mollusks observed in the Pacific Northwest region of Washington State and southern British Columbia. The legend indicates select sites where we have accumulated extensive lists to help determine the habitat range of Pacific Northwest species. This includes any identified species found living or dead. These are not complete lists as we are always finding new species to add. We will also be adding more sites and additional information in the future. Click on details to find an informational page on that site which includes a list of the species found.
Where only a genus is listed, the individual species has yet to be identified. If more than one location is given in this instance, it possibly represents more than one species in this genus. We try to include the most updated name changes. For a list of recent changes click here.
Click on 
to view
photos of the species. Scale line in photos is 1cm unless
otherwise noted. Most photos are of the more average looking
specimen you might find, not the "perfect" specimen. Photos of live animals are indicated as such.
Additional Northwest species are listed for which we have a photo but no site data added as yet. Photos of some additional intertidal marine fauna and land & freshwater snails are included at the end of the list but are not tracked by location. Identification pages provide a quick reference to help identify specimens you may see. Please note that several of these sites are protected habitats and shellfish harvesting/collecting is not allowed. This is observational data only to study the range in biodiversity.
Thank you to all members who provided specimens to be photographed for this page
.
Location Legend
This will include all waters south and east of Whidbey Island, WA including Admiralty Inlet.
A1-Port Washington Narrows, Bremerton, Kitsap Co., WA details
A2-Marrowstone Point, Fort Flagler
State Park, Marrowstone Is., Jefferson
Co., WA details
A4-Big Fishtrap Cove, Dana Passage to details
Burfoot County Park, Budd Inlet, Thurston Co., WA
These locations are about 3 miles apart on the same peninsula north of Olympia.
A5-Scenic Beach State Park, Hood Canal, Kitsap Co., WA details
B1-Birch Bay State Park, Whatcom Co., WA. details
B2-Semi-ah-moo Spit, Whatcom Co., WA details
B3-Centennial Beach, west side of Boundary Bay, BC details
B4-Subtidal habitat among the San Juan Islands, WA details
B5-North end of Strait - Campbell River, BC and vicinity details
This will include the waters from the upper west
coast of Whidbey Island west to the Pacific Ocean
and between the
San Juan and Vancouver Islands to the Olympic Peninsula.
C1-Rosario Beach, Deception Pass State Park (north side of the Pass), Skagit Co., WA details
C2-North and West Beaches, Deception Pass State Park (south side of the Pass), Island Co., WA details
C3-Whiskey Creek Beach, Clallum Co., WA details
C4-Pillar Point County Park, Clallum Co., WA details
C5-Slip Point, Clallum Co., WA details
C6-Neah Bay, Clallum Co., WA detailsD2-Makah (Mukkaw) Bay, Clallum Co., WA details
D3-La Push vicinity (within 5 miles), Clallum Co., WA details
D4-Kalaloch to Ruby Beach, Jefferson Co., WA details
D5-Iron Springs to Moclips, Grays Harbor Co., WA details
BivalvesBivalves Bivalve Quick Identification Page
Acila castrensis (Hinds, 1843) A1; B4
Divaricate Nutclam
Adula californiensis (Philippi, 1847) C3,5; D2,3
California Datemussel
Astarte compacta Carpenter, 1864 D1
Compact Astarte
Astarte elliptica (Brown,1827) B4
Elliptical Astarte
Astarte esquimalti (Baird, 1863)
Wavy-Line Astarte
Callithaca tenerrima (Carpenter, 1857) A4,5; B1,2; C4
Thin-Shell Littleneck
Cardiomya pectinata (Carpenter, 1864) D1
Ribbed Dipper
Cardiomya planetica (Dall, 1908) D1
Fine-Ribbed Cardiomya
Chlamys hastata (Sowerby, 1842) A1,2,3; B4; C1,3
Spiny Pink Scallop
Chlamys rubida (Hinds, 1845) B4; C1
Smooth Pink Scallop
Clinocardium blandum (Gould, 1850) B4
Low-Rib Cockle
Clinocardium ciliatum (Fabricius, 1780) B4
Hairy Cockle
Clinocardium nuttallii (Conrad, 1837) A1,2,3,4,5; B1,2,3,4; C1,3,4,5,7
Nuttall's Cockle
Compsomyax subdiaphana (Carpenter, 1864) B4; D1
Milky Pacific Venus
Crassadoma gigantea (Gray, 1825) A3; B4; C1,3,5,6,7; D5
Giant Rock Scallop
Crassostrea gigas (Thunberg, 1793) A1,2,3,4,5; B1,2; C1,3,4,7; D1
Pacific Oyster
Crenella decussata (Montagu, 1808) D1
Cross-Sculpture Crenella
Cryptomya californica (Conrad, 1837) A4,5; B2,3
California Softshell-Clam
Cyclocardia ventricosa (Gould, 1850) B4; D5
Stout Cardita
Diplodonta impolita S.S. Berry, 1953 A5; B5
Rough Diplodon
Entodesma navicula (A.Adams & Reeve, 1850) A1,2,3; B5; C3,5,6
Northwest Ugly Clam
Gari californica (Conrad, 1849) A1; B5; C5; D1
California Sunsetclam
Glans carpenteri (Lamy, 1922) D1,2
Carpenter Carditid
Glycymeris septentrionalis (Middendorff,1849) A1; B4
Western Bittersweet
Hiatella arctica (Linnaeus, 1767) A1,3; C5,6; D2
Arctic Hiatella
Humilaria kennerleyi (Reeve, 1863) A1; B4; C5,7
Kennerley's Venus
Kellia suborbicularis (Montagu, 1803) A1,4; B4,5; C3,5; D1
Suborbicular Kellyclam
Leukoma staminea (Conrad, 1837) A1,2,3,4,5; B1,2,3,5; C1,3,4,5,7; D1
Pacific Littleneck Clam pattern
Lucinoma annulatum (Reeve, 1850) A4; B1,2
Western Ringed Lucine
Lyonsia californica Conrad, 1837 B3
California Lyonsia
Macoma balthica (Linnaeus, 1758) A1,3,4; B1,2,3
Baltic Macoma
Macoma brota Dall, 1916 B4
Heavy Macoma
Macoma carlottensis Whiteaves, 1880 B4
Charlotte Macoma
Macoma elimata Dunnill & Coan, 1968 B4
Beveled Macoma
Macoma expansa Carpenter, 1864 D2,5
Expanded Macoma
Macoma golikovi Scarlato & Kafanov, 1988 B4
Oval Macoma
Macoma inquinata (Deshayes, 1855) A1,3,4; B1,2; C1,3,4,7
Pointed Macoma
Macoma lipara Dall, 1916 B4
Sleek Macoma
Macoma nasuta (Conrad, 1837) A1,2,3,4; B1,2,3; C3,4,7
Bent-Nose Macoma
Macoma secta (Conrad, 1837) A1,2,3,4; B1,2,3; C3,4,7
White-Sand Macoma
Macoma yoldiformis Carpenter, 1864 A4
Yoldia Shape Macoma
Macoma sp. D1
Mactromeris polynyma (Stimpson, 1860) B1,2; C3,4
Arctic Surfclam
Mactrotoma californica (Conrad, 1837) D1
California Surfclam
Megayoldia thraciaeformis (Storer, 1838) B4
Axe Yoldia
Miodontiscus prolongatus (Carpenter, 1864) D1
Elongate Carditid
Modiolus modiolus (Linnaeus, 1758) B4
Northern Horsemussel
Modiolus rectus (Conrad, 1837) A1,3,4; B1,2; C1
Straight Horsemussel
Musculista senhousia (Benson, 1842) A3
Japan Mussel
Musculus niger (Gray, 1824) B4
Black Musculus
Mya arenaria Linnaeus, 1758 A1,2,3,4,5; B1,2,3; C4; D1
Eastern Softshell-Clam
Mya truncata Linnaeus, 1758
Truncated Softshell-Clam
Mytilimeria nuttallii Conrad, 1837 B4
Bladderclam
Mytilus californianus Conrad, 1837 A2; C3,4,5,6,7; D1,3,4
California Mussel
Mytilus complex A1,2,3,4,5; B1,2,3; C1,2,3,4,5,6,7; D1,3,4
Blue Mussel
Includes M. edulis Linnaeus, 1758, M.galloprovincialis Lamarck, 1819,
M. trossulus A.A. Gould, 1850, and their hybrids
Neaeromya rugifera (Carpenter, 1864) A4
Mud Shrimp Clam
Neotrapezium liratum (Reeve, 1843)
Quadrate Trapezium
Nuculana hamata (Carpenter, 1864) B4
Hooked Nutclam
Nuculana minuta Müller, 1776 B4
Nuculana penderi (Dall & Bartsch, 1910) B4; D1
Pender's Nut Clam
Nutricola lordi (W.Baird, 1863) A2; B4; D1
Lord Dwarf-Venus
Nutricola tantilla (Gould, 1853) D1
Purple Dwarf-Venus
Nuttallia obscurata (Reeve, 1857) A1,2,3,5; B1,2,3; C4; D1
Purple Mahogany Clam
Ostrea conchaphila Carpenter, 1857 A5
Olympia Oyster
Pandora filosa Carpenter, 1864 B4
Western Pandora
Pandora wardiana A.Adams, 1860 B4
Giant Pandora
Panomya ampla Dall, 1898 C5
Ample Roughmya
Panopea abrupta (Conrad, 1849) A1,2,3,4; B1; C5; D1
Pacific Geoduc
Parvalucina tenuisculpta (Carpenter, 1864) A1,4
Fine-Lined Lucine
Patinopecten caurinus (A.A.Gould, 1850)
Weathervane Scallop
Penitella conradi Valenciennes, 1846 D1
Abalone Piddock
Penitella penita (Conrad, 1837) B5; C3,5; D3,4,5
Flat-Tip Piddock
Petricola carditoides (Conrad, 1837) C3,5; D2,4,5
Hardy Petricolid
Platyodon cancellatus (Conrad, 1837) C3,5
Boring Softshell-Clam
Pododesmus macrochisma (Deshayes, 1839) A1,2,3,4,5; B1,2,4,5; C1,3,7
Green False-Jingle
Protothaca restorationensis Frizzell, 1930 B1,2
Rochefortia tumida (Carpenter, 1864) B3; D1
Robust Mysella
Saxidomus gigantea (Deshayes, 1839) A1,2,3,4,5; B1,2; C3,4,5,6,7; D1
Washington Butter Clam
Semele rubropicta Dall, 1871 A1,4; D1
Rose-Painted Clam
Siliqua patula (Dixon, 1789) C4; D1,2,4,5
Pacific Razor-Clam
Simomactra falcata (Gould, 1850) A3,4; B3
Hooked Surfclam
Solen sicarius A.A. Gould, 1850 A2,4; B1,2; C3
Sickle Jackknife-Clam
Tellina bodegensis Hinds, 1845 D2,5
Bodega Tellin
Tellina carpenteri Dall, 1900 B4
Carpenter's Tellin
Tellina modesta (Carpenter, 1864) A2,3,4; B1,2,5
Plain Tellin
Tellina nuculoides (Reeve, 1854) A2,3; B3; D1,2
Salmon Tellin
Tresus allomyax Coan & Valentich Scott, 2000
Strange Gaper
Tresus capax (Gould, 1850) A1,2,3,4,5; B1,2,3; C3,4,7; D1,4
Fat Gaper or Fat Horse Clam
Tresus nuttallii (Conrad, 1837) A1,2,3,4,5; B1,2,3; C3,4,7; D1
Pacific Gaper or Pacific Horse Clam
Venerupis philippinarum (A.Adams & Reeve, 1850) A1,3,4,5; B1,2,3; C4; D1
Japanese Littleneck Clam
Yoldia myalis (Couthouy, 1838) B4
Oval Yoldia
Yoldia seminuda Dall, 1871 B4
Oblique-Lined Yoldia
Zirfaea pilsbryi Lowe, 1931 A1,4; C7
Rough Piddock
Veneridae comparison
Gastropods Gastropod Quick Identification Page
Acmaea mitra Rathke, 1833 A1; B1,4,5; C1,3,5,6,7; D2
Whitecap Limpet
Acteocina culcitella (Gould, 1852) A1
Western Barrel-Bubble
Acteocina eximia (Baird, 1863) B4; D1
Pleatless Barrel-Bubble
Alia carinata (Hinds, 1844) A1,2,4; B1,2; C3,5,7
Carinate Dovesnail
Alvania compacta (Carpenter, 1864) A2,3
Compact Alvania
Alvania sp. B5; C5; D1
Amphissa columbiana Dall, 1916 A1,2,3; B4; C1,3,5,6,7; D3
Wrinkled Amphissa
Antiplanes voyi (Gabb, 1866) B4
Perverse Turrid
Antisabia panamensis (C.B. Adams, 1852) D1,2
Flat Hoofsnail
Astyris gausapata (Gould, 1850) B4; B5; D1
Dovesnail
Balcis sp. B5; D1
Balcis sp. A3
Barleeia acuta (Carpenter, 1864) D1
Acute Barleysnail
Barleeia sp. B5; C5
Batillaria attramentaria (GGG.B. Sowerby I,1855) A1,3; B2,3
Mudflat Snail
Beringius eyerdami A.G. Smith, 1959 B4
Eyerdam's Whelk
Boreotrophon multicostatus (Eschscholtz, 1829) C6
Ribbed Trophon
Boreotrophon orpheus (Gould, 1849) B4
Corded Trophon
Boreotrophon stuarti (A.E. Smith, 1880) B4
Winged Trophon
Buccinum plectrum Stimson, 1855 B4
Sinuous Whelk
Caecum crebricinctum Carpenter, 1864 D1
Giant Caecum
Caecum occidentale (Bartsch, 1920) D1
Western Caecum
Caesia fossatus (Gould, 1850) C3,7; D4,5
Giant Western Nassa
Callianax baetica (Carpenter, 1864) A1; C6
Baetic Olive
Callianax biplicata (Carpenter, 1864) A1; C3,4,6; D1,2,4
Purple Olive
Callianax pycna (S.S. Berry, 1935) C6; D1
Zigzag Olive
Calliostoma annulatum (Lightfoot, 1786) B4; D1
Purple-Ring Topsnail
Calliostoma canaliculatum (Lightfoot, 1786) D1
Channelled Topsnail
Calliostoma ligatum (Gould, 1849) A1,2,3; C1,3,5,6,7
Blue Topsnail
Calliostoma variegatum Carpenter, 1864 B4; D1
Variable Topsnail
Calyptraea fastigiata Gould, 1846 B4; C3
Cup-and-Saucer Snail
Ceratostoma foliatum (Gmelin, 1791) A1; B4; C1,5,6,7
Leafy Hornmouth
Cerithiopsis sp. 1 A3
Cerithiopsis sp. 2 B5
Certithiopsis sp. 3 D1
Chlorostoma funebralis (A.Adams, 1855) C3,5,7; D1,2,3
Black Turban
Cranopsis cucullata (Gould, 1846) D1
Hooded Puncturella
Cranopsis multistriata (Dall, 1914) A3; B4; D5
Many-Ribbed Puncturella
Crepidula convexa Say, 1822 B3
Atlantic Convex Slipper-Shell
Crepidula fornicata (Linnaeus, 1758) A4
Atlantic Slipper-Shell
Crepidula nummaria Gould, 1846 A2; B5; C3,5; D1
Northern White Slipper-Shell
Crepidula onyx (Sowerby, 1824) A1
Onyx Slipper-Shell
Crepidula perforans (Valenciennes, 1846) A1; B4; D1
Western White Slipper-Shell
Crepipatella dorsata (Broderip, 1834) A1,4; B4; C5
Wrinkled Slipper-Shell
Cryptobranchia concentrica (Middendorff, 1847) A3; B4; D1
Ringed Blind Limpet
Cryptonatica aleutica (Dall, 1919) A4; B3,4
Aleutian Moonsnail
Diodora aspera (Rathke, 1833) A1,3; C1,3,5,6; D1
Rough Keyhole Limpet
Epitonium indianorum (Carpenter, 1865) B4; C5; D1,2
Money Wentletrap
Epitonium sawinae (Dall, 1903) D1
Sawin's Wentletrap
Epitonium tinctum (Carpenter, 1864) C5,6
Tinted Wentletrap
Eulithidium pulloides (Carpenter, 1865) D1
Euspira lewisii (Gould, 1847) A1,2,3,4,5; B1; C5; D1
Lewis's Moonsnail
Exilioidea rectirostris (Carpenter, 1865) B4
Small Tall Whelk
Fissurellidea bimaculata (Dall, 1871) C6
Two-Spot Keyhole Limpet
Fusitriton oregonensis (Redfield, 1848) B4; C3,7
Oregon Triton
Garnotia adunca (G.B. Sowerby I, 1825) A2; C3,5; D1
Hooked Slipper-Shell
Granulina margaritula (Carpenter, 1857) B4; C5,7
Pear-Shaped Marginella
Haliotis kamtschatkana Jonas, 1845 B4,5; D1
Northern Abalone
Haminoea japonica (Pilsbry, 1895) B3
Oval Bubble Shell
Haminoea vesicula Gould, 1855 A3; B1,2,3
White Bubble Shell
Hima fratercula (Dunker, 1862) B2,3
Japanese Nassa
Hima mendica (Gould, 1849) A1,4; B1,2; C5
Western Lean Nassa
Homalopoma baculum (Carpenter, 1864) C5
Berry Dwarf Turban
Homalopoma luridum (Dall, 1885) B4; C5; D1,2
Dwarf Turban
Ilyanassa obsoleta (Say, 1822) B3
Black Dog Whelk
Iselica obtusa (Carpenter, 1864) A2
Obtuse Iselica
Iselica ovoidea (Gould, 1853) B5
Kurtzia arteaga (Dall & Bartsch, 1910) D1
Beaded Mangelia
Kurtziella crebricostata (Carpenter, 1864) C6
Violet-Band Mangelia
Lacuna variegata Carpenter, 1864 A1,2,3; B1,3; C3,4,5,7; D1
Variable Lacuna
Lacuna vincta (Montagu, 1803) B5; C3,5; D4
Wide Lacuna
Lirabuccinum dirum (Reeve, 1846) B1,2; C1,3,4,5,7
Dire Whelk
Lirobittium attenuatum (Carpenter, 1864) D1
Slender Bittium
Lirobittium munitum (Carpenter, 1864) D1
Lirobittium vancouverense (Dall & Bartsch, 1910) D1
Lirularia lirulata (Carpenter, 1864) A1; C5
Pearly Topsnail
Lirularia succincta (Carpenter, 1864) A1; C7
Tucked Topsnail
Littorina scutulata Gould, 1849 A1,2,3,4,5; B1,2,3; C1,2,3,4,5,7; D1,4
Checkered Periwinkle
Littorina sitkana Philippi, 1846 A1,3; B1,2; C3,4,5,7; D1
Sitka Periwinkle
Littorina subrotundata (Carpenter, 1864)
Salt Marsh Periwinkle -barnacle ecotype C2
- marsh ecotype
Lottia comparison
Lottia asmi (Middendorff, 1847) D1
Black Limpet
Lottia digitalis (Rathke, 1833) A2; C1,2,3,4,5,6,7; D1,3,4,5
Ribbed Limpet
Lottia fenestratus (Reeve, 1855) A2; C3,5,7; D3,4
Fenestrate Limpet
Lottia instabilis (Gould, 1846) A2; C3,5,6; D2
Unstable Limpet
Lottia parallela (Dall, 1921) A3; B1,2,3
Pacific Eelgrass Limpet
Lottia pelta (Rathke, 1833) A1,2,3,4,5; B1; C1,2,3,4,5,6; D1,3,4
Shield Limpet
Lottia persona (Rathke, 1833) A3,4,5; B5; C2,3,4,5,6,7; D1,3,4
Mask Limpet
Lottia rosacea (Carpenter, 1864) A1; D1
Pacific Rosy Limpet
Lottia scutum (Rathke, 1833) A1,2,3; B1,2,4; C1,3,4,5,7; D1
Plate Limpet
Lottia triangularis (Carpenter, 1864) D1
Triangular Limpet
Marsenina rhombica (Dall, 1871) C6
Marbled Lamellarid
Marsenina stearnsi (Dall, 1871) C6
Stearn's Ear Shell
Marsenina sp. D1
Margarites pupillus (Gould, 1849) A2,3; B1,4,5; C1,3; D1
Puppet Margarite
Neoadmete modesta (Carpenter, 1864) B4; D1
Modest Latticework Snail
Neptunea lyrata lyrata (Gmelin, 1791) B4
Ridged Whelk
Neptunea phoenicia (Dall, 1891) B4
Phoenician Whelk
Neptunea stilesi A.G. Smith, 1968
Inflated Whelk
Nucella canaliculata (Duclos, 1832) C3,5,6
Channeled Dogwinkle
Nucella lamellosa (Gmelin, 1791) A1,2,3,4,5; B1,2,3,4; C1,2,3,4,5,6,7; D1,4
Frilled Dogwinkle
Nucella lima (Gmelin, 1791) A2; C1,2; D5
File Dogwinkle N. lima or N. canaliculata. The photo is a N. lima from Alaska.)
Nucella ostrina (Gould, 1852) A1,2,3; B1; C1,2,3,4,5,6,7; D1,4,5
Northern Striped Dogwinkle
Ocinebrellus inornatus (Récluz, 1851) B3; D1
Japanese Oyster Drill
Ocinebrina atropurpurea (Carpenter, 1865) D2
Purple Rocksnail
Ocinebrina interfossa Carpenter, 1864 A1; C3,5; D1
Sculptured Rocksnail
Ocinebrina lurida (Middendorff, 1849) B1; C3,4,5,6,7; D1
Lurid Rocksnail
Ocinebrina sclera (Dall, 1919) B4; C6
Sclera Rocksnail
Odostomia columbiana Dall & Bartsch, 1907 A1,3
Odostomia sp. B5; D1
Oenopota elegans (Müller, 1842) B4
Elegant Lora
Oenopota excurvata (Carpenter, 1864) B4
Oenopota fidicula (Gould, 1849) B4
Oenopota levidensis (Carpenter, 1864) B4
Oenopota pyramidalis (Strom, 1788) B4
Pyramid Lora
Oenopota tabulata (Carpenter, 1864) B4; C6
Oenopota turricula (Montagu, 1803) B4
Turriculate Lora
Oenopota sp. B1
Onoba carpenteri (Weinkauff, 1885) B5; C5
Opalia borealis Keep, 1881 B4; C3,5; D2,3
Boreal Wentletrap
Ophiodermella cancellata (Carpenter, 1864) B4; D1
Cancellate Snakeskin-Snail
Ophiodermella inermis (Reeve, 1843) A1
Gray Snakeskin-Snail
Petalaconchus compactus (Carpenter, 1864) D1
Northern Compact Wormsnail
Pomaulax gibberosa (Dillwyn, 1817) A1; D1
Red Turban
Promartynia pulligo (Gmelin, 1791) C5,6; D1,2
Dusky Turban
Puncturella cooperi Carpenter, 1864 D1
Puncturella galeata (Gould, 1846) B4
Helmet Puncturella
Scabrotrophon maltzani (Kobelt & Küster, 1878) B4
Stylidium eschrichtii (Middendorff, 1849) A1; C1,3,5; D5
Threaded Bittium
Trichotropis cancellata Hinds, 1843 A1,3; B4; C6
Checkered Hairysnail
Tricolia sp. A2; C3,5
Turbonilla aurantia (Carpenter, 1864) B5
Golden Turbonille
Turbonilla sp. 1 A1
Turbonilla sp. 2 B3; C6
Turbonilla sp. 3 B4
Turbonilla sp. 4 D1
Turbonilla sp. B4; C5; D1
Urosalpinx cinerea Say, 1822 D1
Atlantic Oyster Drill
Velutina prolongata Carpenter, 1864 A3
Smooth Velvet Snail
Velutina velutina O.F. Müller, 1776 A1,3
Spiral Velvet Snail
Volutharpa ampullacea (Middendorff, 1848)
Big-Mouth Whelk
Chitons Chiton Quick Identification Page
Chaetopleura gemma Dall, 1879 D1
Gem Chiton
Cryptochiton stelleri (Middendorff, 1847) A2,3; C1,3,7; D1,2
Giant Pacific Chiton or Gumboot Chiton
Cyanoplax dentiens (Gould, 1846) A1,2,3; C7
Gould's Baby Chiton
Cyanoplax fernaldi (Eernisse, 1986) B4
Dendrochiton flectens (Carpenter, 1864) C6,7
Painted Dendrochiton
Katharina tunicata (Wood, 1815) A2,3; B1; C1,2,3,4,5,7; D1
Black Katy Chiton
Lepidozona cooperi (Dall, 1919) C3,6; D2
Cooper's Chiton
Lepidozona interstinctus (Gould, 1852) A1; B4
Smooth Lepidozona
Lepidozona mertensii (Middendorff, 1847) A1,2,3; C6
Merten's Chiton
Lepidozona retiporosa (Carpenter, 1864) A3; B4
Little Lepidozona
Leptochiton rugatus (Carpenter, 1892) B5; C5
Dwarf Chiton
Mopalia cirrata Berry, 1919 A3; D1
Long-Haired Mopalia
Mopalia egretta Berry, 1919 B4
Egret-Plumed Mopalia
Mopalia ferreirai Clark, 1991 A1,2,3
Mopalia hindsii (Sowerby, 1847) A2,3; C6; D2,5
Hind's Mopalia
Mopalia imporcata Carpenter, 1864 A3
Branch-haired Mopalia
Mopalia kennerleyi Carpenter, 1864 A3; C6; D1
Northern Hairy Chiton
Mopalia lignosa (Gould, 1846) A1,2,3,4; B5; C3,6,7; D2
Woody Chiton
Mopalia muscosa (Gould, 1846) A1,2,3; B1,4; C2,3,4,5,7
Mossy Chiton
Mopalia sinuata Carpenter, 1864 D1
Dwarf Hairy Mopalia
Mopalia spectabilis Cowan & Cowan, 1977 A3; C6; D2
Red-Flecked Mopalia
Mopalia swanii Carpenter, 1864 A3; B4
Swan's Mopalia
Mopalia vespertina (Gould, 1852) A3
Smooth Mopalia
Placiphorella velata Dall, 1879 C6; D2
Veiled-Chiton
Tonicella lineata (Wood, 1815) A1,2,3; C3,5,6,7; D1,2
Lined Chiton
Tonicella undocaerulea (Sirenko, 1973) A1; C7
Blue-Line Chiton
Tonicella cf venusta Clark, 1999 C6
Antalis pretiosum (Sowerby, 1860) D1
Indian Money Tusk
Cadulus californicus Pilsbry & Sharp, 1898 D1
Californian Cadulus
Cadulus tolmei Dall, 1897 D1
Gadila aberrans (Whiteaves, 1887) D1
Aberrant Toothshell
Pulsellum salishorum Marshall, 1980 B4; D1
Salish Toothshell
Rhabdus rectius (Carpenter, 1865) B4; D1
Western Straight Tuskshell
Chaetoderma cf argentum Heath, 1911 D1
Glistenworm
Aeolidia papillosa (Linnaeus, 1761) A3; B1
Shag-Rug Nudibranch
Armina californica (Cooper, 1863) A3
Striped Nudibranch
Berthella californica (Dall, 1900) C7
California Sidegill
Diaulula sandiegensis (Cooper, 1863) A2,3
Leopard Dorid
Dirona albolineata MacFarland, 1905 A2; B1,2; C7
Frosted Nudibranch
Doris montereyensis (Cooper, 1862) A2,3; C3,5
Monterey Sea Lemon
Doris odhneri (MacFarland, 1966) C7
Odhner's Dorid
Flabellina verrucosa (Johnson, 1832)
Warty Aeolid
Geitodoris heathi (MacFarland, 1905) C7
Heath's Dorid
Hermissenda crassicornis (Eschscholtz, 1831) A2; C7
Opalescent Nudibranch
Melibe leonina (Gould, 1852) B1
Lion's Melibe
Olea hansineensis Agersborg, 1923 A3
Hansine's Egg Eater
Onchidella bilamellata (Linnaeus, 1767) A3
Barnacle-Eating Nudibranch
Onchidella borealis Dall, 1871 C2,5; D1
Leather Limpet
Phyllaplysia taylori Dall, 1900 B3
Zebra Leafslug
Rostanga pulchra MacFarland, 1905 C7
Red Dorid
Triopha catalinae (Cooper, 1863) A3
Clown Nudibranch
Nudibranch eggs
Crossaster papposus (Linnaeus, 1767)
Rose Star
Cucumaria miniata (Brandt, 1835)
Orange Sea Cucumber
Cucumaria piperata (Stimpson, 1864)
Peppered Sea Cucumber
Dendraster excentricus (Eschscholtz, 1831)
Excentric Sand Dollar
Dermasteria imbricata (Grube, 1857)
Leather Star
Eupentacta quinquesemita (Selenka, 1867)
Stiff-Footed Sea Cucumber
Evasterias troschelii (Stimpson, 1862)
Mottled Star
Henricia leviuscula (Stimpson, 1857)
Blood Star
Leptasterias hexactis (Stimpson, 1862)
Six Ray Star
Pisaster brevispinus (Stimpson, 1857)
Giant Pink Star
Pisaster ochraceus (Brandt, 1835)
Ochre Star
Pycnopodia helianthoides (Brandt, 1835)
Sunflower Star
Solaster dawsoni Verrill, 1880
Morning Sun Star
Solaster endeca (Linnaeus, 1771)
Northern Sunstar
Solaster stimpsoni Verrill, 1880
Striped Sunstar
Strongylocentrotus droebachiensis (O.F. Müller, 1776)
Green Sea Urchin
Strongylocentrotus franciscanus (A.Agassiz, 1863)
Red Sea Urchin
Strongylocentrotus pallidus (G.O. Sars, 1871)
White Sea Urchin
Strongylocentrotus purpuratus (G.O. Sars, 1871)
Purple Sea Urchin
Aequorea victoria (Murbach & Shearer, 1902)
Crystal Jelly
Aequorea sp.
Water Jelly
Anthopleura xanthogrammica (Brandt, 1835)
Giant Green Anenome
Cancer magister Dana, 1852
Dungeness Crab
Cancer productus Randall, 1839
Red Rock Crab
Cheilonereis cyclurus (Harrington, 1897)
Red-and-White-Banded Sea-Nymph
Elassochirus tenuimanus (Dana, 1851)
Widehand Hermit Crab
Epiactis prolifera Verrill, 1869
Brooding Anenome
Idotea resecata (Stimpson, 1857)
Eelgrass Isopod
Laqueus californicus Koch, 1847
California Lamp Shell
Metridium farcimen (Tilesius, 1809)
Giant Plumose Anenome
Metridium senile (Linnaeus, 1767)
Short Plumose Anenome
Mitrocoma cellularia (A.Agassiz, 1865)
Cross Jellyfish
Pectinaria granulata (Linnaeus, 1767)
Tusk Coneworm
Pollicipes polymerus Sowerby, 1833
Goose Barnacle
Stylantheca sp.
Purple Encrusting Hydrocoral
Terebratalia transversa (Sowerby, 1846)
Common Lamp Shell
Terebratalia transversa caurina (Gould, 1850)
Lamp Shell
Urticina grebelnyi Sanamyan & Sanamyan, 2006
Painted Anenome
Allogona townsendiana (I.Lea, 1838)
Oregon Forestsnail
Ancotrema sportella (Gould, 1846)
Beaded Lancetooth
Assiminea californica (Tryon, 1865)
Californian Assiminea
Cecina manchurica A.Adams, 1861
Manchurian Cecina
Cepaea nemoralis (Linnaeus, 1758)
Banded Garden Snail
Cernuella virgata (da Costa, 1778)
Vineyard Snail
Cochlicopa lubrica (Müller, 1774)
Glossy Pillar
Cornu aspersum (Müller, 1774)
Brown Garden Snail
Lauria cylindracea (da Costa, 1778)
Littorina subrotundata (Carpenter, 1864)
Salt Marsh Periwinkle - marsh ecotype
Monadenia fidelis (Gray, 1834)
Pacific Sideband
Myosotella myosotis (Draparnaud, 1801)
European Melampus
Oxychilus alliarius (J.S. Miller, 1822)
Garlic Snail
Oxychilus draparnaldi (Beck, 1837)
Draparnald's Glass Snail
Vallonia pulchella (Müller, 1774)
Lovely Vallonia
Vespericola columbiana (I. Lea, 1838)
Northwest Hesperian
Cipangopaludina chinensis (Reeve, 1863)
Chinese Mystery Snail
Corbicula fluminea (Müller, 1774)
Asian Clam
Ferrissia fragilis (Tryon, 1863)
Fragile Ancylid
Gonidea angulata (Lea, 1838)
Western Ridged Mussel
Helisoma anceps anceps (Menke, 1930)
Two-Ridge Ramshorn
Margaritifera falcata (Gould, 1850)
Western Pearlshell
Physa gyrina Say, 1821
Tadpole Physa
Radix auricularia (Linnaeus, 1758)
Big-Eared Radix
Sphaerium c. simile (Say, 1816)
Grooved Fingernailclam
Stagnicola elodes (Say, 1821)
Marsh Pondsnail
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This page last revised: 2-22-2010
