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Common Periwinkle
Littorina littorea
3,041 observations
Atlantic Dogwhelk
Nucella lapillus
1,129 observations
Blue Mussel
Mytilus edulis
820 observations
Bushy-backed Nudibranch
Dendronotus frondosus
693 observations
Tortoiseshell Limpet
Testudinalia testudinalis
636 observations
West Atlantic Surfclam
Spisula solidissima
591 observations
Common Atlantic Slippersnail
Crepidula fornicata
578 observations
Red-fingered Coryphella
Coryphella verrucosa
575 observations
Flat Periwinkle
Littorina obtusata
530 observations
Leopard Slug
Limax maximus
448 observations
Northern Horse Mussel
Modiolus modiolus
446 observations
Soft-shelled Clam
Mya arenaria
424 observations
Atlantic Jackknife
Ensis leei
409 observations
barnacle-eating dorid
Onchidoris bilamellata
396 observations
Eastern Elliptio
Elliptio complanata
349 observations
Rim-backed Nudibranch
Palio dubia
290 observations
Shag-rug Nudibranch
Aeolidia papillosa
257 observations
Northern Moonsnail
Euspira heros
228 observations
Fuzzy Onchidoris
Onchidoris muricata
227 observations
Common Whelk
Buccinum undatum
223 observations
Northern Quahog
Mercenaria mercenaria
222 observations
Rough Periwinkle
Littorina saxatilis
208 observations
Crowned Seaslug
Doto coronata
195 observations
Eastern Oyster
Crassostrea virginica
163 observations
European Flat Oyster
Ostrea edulis
129 observations
Rocky Aeolid
Eubranchulus rupium
120 observations
Threeline Mudsnail
Ilyanassa trivittata
109 observations
Humped Ancula Sea Slug
Ancula gibbosa
100 observations
Green Aeolis
Tenellia viridis
100 observations
Western Dusky Slug
Arion subfuscus
99 observations
Chinese Mystery Snail
Margarya chinensis
98 observations
Northern Lacuna
Lacuna vincta
95 observations
Longfin Inshore Squid
Doryteuthis pealeii
94 observations
Branched Sapsucker
Placida dendritica
88 observations
Slender Eolis
Coryphella gracilis
87 observations
Brown-lipped Snail
Cepaea nemoralis
84 observations
Tree slug
Lehmannia marginata
79 observations
Atlantic Razor
Siliqua costata
78 observations
Hairy Spiny Dorid
Acanthodoris pilosa
73 observations
Atlantic deep-sea scallop
Placopecten magellanicus
73 observations
Johnston's balloon eolis
Tergipes tergipes
62 observations
Eastern Floater
Pyganodon cataracta
59 observations
White-lipped Snail
Cepaea hortensis
58 observations
club-gilled nudibranch
Eubranchus pallidus
58 observations
Eastern Whitelip
Neohelix albolabris
56 observations
Pearly Topshell
Margarites helicinus
51 observations
False Angelwing
Petricolaria pholadiformis
49 observations
Eastern White Slippersnail
Crepidula plana
48 observations
Oval Ambersnail
Novisuccinea ovalis
48 observations
Arctic Hiatella
Hiatella arctica
44 observations
Frequently Asked Questions
- The 10 most common molluscs in Maine are:
- Common Periwinkle (Littorina littorea)
- Atlantic Dogwhelk (Nucella lapillus)
- Blue Mussel (Mytilus edulis)
- Bushy-backed Nudibranch (Dendronotus frondosus)
- Tortoiseshell Limpet (Testudinalia testudinalis)
- West Atlantic Surfclam (Spisula solidissima)
- Common Atlantic Slippersnail (Crepidula fornicata)
- Red-fingered Coryphella (Coryphella verrucosa)
- Flat Periwinkle (Littorina obtusata)
- Leopard Slug (Limax maximus)
- The most observed mollusc in Maine is Common Periwinkle (Littorina littorea), with 3,041 recorded observations.