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Common Periwinkle
Littorina littorea
3,159 observations
Atlantic Dogwhelk
Nucella lapillus
1,164 observations
Blue Mussel
Mytilus edulis
822 observations
Bushy-backed Nudibranch
Dendronotus frondosus
707 observations
Tortoiseshell Limpet
Testudinalia testudinalis
680 observations
West Atlantic Surfclam
Spisula solidissima
614 observations
Common Atlantic Slippersnail
Crepidula fornicata
603 observations
Red-fingered Coryphella
Coryphella verrucosa
593 observations
Flat Periwinkle
Littorina obtusata
544 observations
Northern Horse Mussel
Modiolus modiolus
459 observations
Leopard Slug
Limax maximus
453 observations
Soft-shelled Clam
Mya arenaria
433 observations
Atlantic Jackknife
Ensis leei
429 observations
barnacle-eating dorid
Onchidoris bilamellata
418 observations
Eastern Elliptio
Elliptio complanata
352 observations
Rim-backed Nudibranch
Palio dubia
292 observations
Shag-rug Nudibranch
Aeolidia papillosa
274 observations
Northern Moonsnail
Euspira heros
235 observations
Fuzzy Onchidoris
Onchidoris muricata
234 observations
Northern Quahog
Mercenaria mercenaria
226 observations
Common Whelk
Buccinum undatum
225 observations
Rough Periwinkle
Littorina saxatilis
215 observations
Crowned Seaslug
Doto coronata
198 observations
Eastern Oyster
Crassostrea virginica
165 observations
European Flat Oyster
Ostrea edulis
129 observations
Rocky Aeolid
Eubranchulus rupium
127 observations
Threeline Mudsnail
Ilyanassa trivittata
110 observations
Humped Ancula Sea Slug
Ancula gibbosa
102 observations
Western Dusky Slug
Arion subfuscus
102 observations
Northern Lacuna
Lacuna vincta
100 observations
Green Aeolis
Diaphoreolis viridis
100 observations
Chinese Mystery Snail
Margarya chinensis
99 observations
Brown-lipped Snail
Cepaea nemoralis
94 observations
Longfin Inshore Squid
Doryteuthis pealeii
94 observations
Branched Sapsucker
Placida dendritica
89 observations
Slender Eolis
Coryphella gracilis
89 observations
Atlantic Razor
Siliqua costata
81 observations
Tree slug
Lehmannia marginata
79 observations
Atlantic deep-sea scallop
Placopecten magellanicus
76 observations
Hairy Spiny Dorid
Acanthodoris pilosa
74 observations
Johnston's balloon eolis
Tergipes tergipes
63 observations
White-lipped Snail
Cepaea hortensis
60 observations
Eastern Floater
Pyganodon cataracta
60 observations
club-gilled nudibranch
Amphorina pallida
58 observations
Eastern Whitelip
Neohelix albolabris
57 observations
Pearly Topshell
Margarites helicinus
53 observations
Eastern White Slippersnail
Crepidula plana
50 observations
Oval Ambersnail
Novisuccinea ovalis
50 observations
False Angelwing
Petricolaria pholadiformis
50 observations
Arctic Hiatella
Hiatella arctica
47 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)
- Northern Horse Mussel (Modiolus modiolus)
- The most observed mollusc in Maine is Common Periwinkle (Littorina littorea), with 3,159 recorded observations.