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Common Atlantic Slippersnail
Crepidula fornicata
752 observations
Shark Eye
Neverita duplicata
742 observations
Eastern Oyster
Crassostrea virginica
686 observations
Atlantic Ribbed Mussel
Geukensia demissa
421 observations
Northern Quahog
Mercenaria mercenaria
407 observations
Common Jingle
Anomia simplex
394 observations
Leopard Slug
Limax maximus
371 observations
Common Periwinkle
Littorina littorea
371 observations
Eastern Mudsnail
Ilyanassa obsoleta
247 observations
Channeled Whelk
Busycotypus canaliculatus
242 observations
Atlantic Bay Scallop
Argopecten irradians
193 observations
Changeable Mantleslug
Megapallifera mutabilis
177 observations
Blue Mussel
Mytilus edulis
171 observations
Knobbed Whelk
Busycon carica
166 observations
Rounded Snail
Gonyodiscus rotundatus
159 observations
Asian Clam
Corbicula fluminea
147 observations
Eastern Oyster Drill
Urosalpinx cinerea
146 observations
Transverse Ark
Anadara transversa
143 observations
Eastern Elliptio
Elliptio complanata
135 observations
Atlantic Jackknife
Ensis leei
127 observations
Blood Ark
Lunarca ovalis
113 observations
Soft-shelled Clam
Mya arenaria
111 observations
Threeline Mudsnail
Ilyanassa trivittata
110 observations
Brown-lipped Snail
Cepaea nemoralis
90 observations
Chinese Mystery Snail
Margarya chinensis
73 observations
West Atlantic Surfclam
Spisula solidissima
68 observations
Milky Slug
Deroceras reticulatum
67 observations
Eastern Whitelip
Neohelix albolabris
62 observations
Western Dusky Slug
Arion subfuscus
57 observations
Eastern Floater
Pyganodon cataracta
41 observations
Marsh Ramshorn
Planorbella trivolvis
36 observations
Flat Periwinkle
Littorina obtusata
29 observations
Eastern White Slippersnail
Crepidula plana
29 observations
Northern Moonsnail
Euspira heros
29 observations
Two-toothed Marsh Snail
Melampus bidentatus
27 observations
Glossy Pillar
Cochlicopa lubrica
23 observations
False Angelwing
Petricolaria pholadiformis
23 observations
Toga Mantleslug
Philomycus togatus
23 observations
Piedmont Elimia
Elimia virginica
20 observations
Longfin Inshore Squid
Doryteuthis pealeii
19 observations
Quick Gloss Snail
Zonitoides arboreus
19 observations
Meadow Slug
Deroceras laeve
15 observations
Garden Arion
Arion hortensis
14 observations
Thick-lipped Drill
Eupleura caudata
14 observations
Zebra Mussel
Dreissena polymorpha
13 observations
Eastern Lampmussel
Lampsilis radiata
12 observations
Well-ribbed Dove Snail
Costoanachis translirata
11 observations
Rough Periwinkle
Littorina saxatilis
10 observations
Banded Mystery Snail
Callinina georgiana
9 observations
Freshwater Pearl Mussel
Margaritifera margaritifera
8 observations
Frequently Asked Questions
- The 10 most common molluscs in Connecticut are:
- Common Atlantic Slippersnail (Crepidula fornicata)
- Shark Eye (Neverita duplicata)
- Eastern Oyster (Crassostrea virginica)
- Atlantic Ribbed Mussel (Geukensia demissa)
- Northern Quahog (Mercenaria mercenaria)
- Common Jingle (Anomia simplex)
- Leopard Slug (Limax maximus)
- Common Periwinkle (Littorina littorea)
- Eastern Mudsnail (Ilyanassa obsoleta)
- Channeled Whelk (Busycotypus canaliculatus)
- The most observed mollusc in Connecticut is Common Atlantic Slippersnail (Crepidula fornicata), with 752 recorded observations.
- Some of the most commonly observed native molluscs in Connecticut include:
- Piedmont Elimia (Elimia virginica)