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Common Atlantic Slippersnail
Crepidula fornicata
734 observations
Eastern Oyster
Crassostrea virginica
636 observations
Atlantic Ribbed Mussel
Geukensia demissa
405 observations
Northern Quahog
Mercenaria mercenaria
391 observations
Common Jingle
Anomia simplex
378 observations
Common Periwinkle
Littorina littorea
363 observations
Leopard Slug
Limax maximus
353 observations
Eastern Mudsnail
Ilyanassa obsoleta
239 observations
Channeled Whelk
Busycotypus canaliculatus
206 observations
Atlantic Bay Scallop
Argopecten irradians
188 observations
Changeable Mantleslug
Megapallifera mutabilis
175 observations
Blue Mussel
Mytilus edulis
170 observations
Rounded Snail
Gonyodiscus rotundatus
153 observations
Asian Clam
Corbicula fluminea
146 observations
Eastern Oyster Drill
Urosalpinx cinerea
142 observations
Knobbed Whelk
Busycon carica
142 observations
Transverse Ark
Anadara transversa
140 observations
Eastern Elliptio
Elliptio complanata
134 observations
Atlantic Jackknife
Ensis leei
121 observations
Soft-shelled Clam
Mya arenaria
110 observations
Blood Ark
Lunarca ovalis
110 observations
Shark Eye
Neverita duplicata
108 observations
Threeline Mudsnail
Ilyanassa trivittata
99 observations
Brown-lipped Snail
Cepaea nemoralis
88 observations
Chinese Mystery Snail
Margarya chinensis
72 observations
Milky Slug
Deroceras reticulatum
67 observations
West Atlantic Surfclam
Spisula solidissima
67 observations
Eastern Whitelip
Neohelix albolabris
62 observations
Western Dusky Slug
Arion subfuscus
54 observations
Eastern Floater
Pyganodon cataracta
40 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
26 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
18 observations
Quick Gloss Snail
Zonitoides arboreus
18 observations
Garden Arion
Arion hortensis
14 observations
Meadow Slug
Deroceras laeve
14 observations
Zebra Mussel
Dreissena polymorpha
13 observations
Thick-lipped Drill
Eupleura caudata
13 observations
Eastern Lampmussel
Lampsilis radiata
12 observations
Rough Periwinkle
Littorina saxatilis
10 observations
Well-ribbed Dove Snail
Costoanachis translirata
10 observations
Banded Mystery Snail
Callinina georgiana
8 observations
Convex Slippersnail
Crepidula convexa
7 observations
Frequently Asked Questions
- The 10 most common molluscs in Connecticut are:
- Common Atlantic Slippersnail (Crepidula fornicata)
- Eastern Oyster (Crassostrea virginica)
- Atlantic Ribbed Mussel (Geukensia demissa)
- Northern Quahog (Mercenaria mercenaria)
- Common Jingle (Anomia simplex)
- Common Periwinkle (Littorina littorea)
- Leopard Slug (Limax maximus)
- Eastern Mudsnail (Ilyanassa obsoleta)
- Channeled Whelk (Busycotypus canaliculatus)
- Atlantic Bay Scallop (Argopecten irradians)
- The most observed mollusc in Connecticut is Common Atlantic Slippersnail (Crepidula fornicata), with 734 recorded observations.
- Some of the most commonly observed native molluscs in Connecticut include:
- Piedmont Elimia (Elimia virginica)