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Shark Eye
Neverita duplicata
1,410 observations
Common Atlantic Slippersnail
Crepidula fornicata
793 observations
Eastern Oyster
Crassostrea virginica
692 observations
Leopard Slug
Limax maximus
443 observations
Atlantic Ribbed Mussel
Geukensia demissa
425 observations
Northern Quahog
Mercenaria mercenaria
424 observations
Common Jingle
Anomia simplex
413 observations
Common Periwinkle
Littorina littorea
387 observations
Channeled Whelk
Busycotypus canaliculatus
264 observations
Eastern Mudsnail
Ilyanassa obsoleta
263 observations
Atlantic Bay Scallop
Argopecten irradians
206 observations
Changeable Mantleslug
Megapallifera mutabilis
181 observations
Knobbed Whelk
Busycon carica
178 observations
Blue Mussel
Mytilus edulis
172 observations
Rounded Snail
Gonyodiscus rotundatus
166 observations
Eastern Oyster Drill
Urosalpinx cinerea
165 observations
Asian Clam
Corbicula fluminea
152 observations
Transverse Ark
Anadara transversa
148 observations
Eastern Elliptio
Elliptio complanata
137 observations
Atlantic Jackknife
Ensis leei
137 observations
Threeline Mudsnail
Ilyanassa trivittata
124 observations
Soft-shelled Clam
Mya arenaria
117 observations
Blood Ark
Lunarca ovalis
115 observations
Brown-lipped Snail
Cepaea nemoralis
95 observations
Chinese Mystery Snail
Margarya chinensis
76 observations
West Atlantic Surfclam
Spisula solidissima
73 observations
Milky Slug
Deroceras reticulatum
67 observations
Western Dusky Slug
Arion subfuscus
62 observations
Eastern Whitelip
Neohelix albolabris
62 observations
Eastern Floater
Pyganodon cataracta
41 observations
Marsh Ramshorn
Planorbella trivolvis
36 observations
Flat Periwinkle
Littorina obtusata
30 observations
Eastern White Slippersnail
Crepidula plana
29 observations
Northern Moonsnail
Euspira heros
29 observations
Two-toothed Marsh Snail
Melampus bidentatus
27 observations
Toga Mantleslug
Philomycus togatus
24 observations
Longfin Inshore Squid
Doryteuthis pealeii
23 observations
Glossy Pillar
Cochlicopa lubrica
23 observations
False Angelwing
Petricolaria pholadiformis
23 observations
Piedmont Elimia
Elimia virginica
20 observations
Quick Gloss Snail
Zonitoides arboreus
19 observations
Thick-lipped Drill
Eupleura caudata
16 observations
Meadow Slug
Deroceras laeve
15 observations
Garden Arion
Arion hortensis
14 observations
Zebra Mussel
Dreissena polymorpha
13 observations
Rough Periwinkle
Littorina saxatilis
12 observations
Eastern Lampmussel
Lampsilis radiata
12 observations
Dwarf Surfclam
Mulinia lateralis
12 observations
Well-ribbed Dove Snail
Costoanachis translirata
11 observations
Freshwater Pearl Mussel
Margaritifera margaritifera
9 observations
Frequently Asked Questions
- The 10 most common molluscs in Connecticut are:
- Shark Eye (Neverita duplicata)
- Common Atlantic Slippersnail (Crepidula fornicata)
- Eastern Oyster (Crassostrea virginica)
- Leopard Slug (Limax maximus)
- Atlantic Ribbed Mussel (Geukensia demissa)
- Northern Quahog (Mercenaria mercenaria)
- Common Jingle (Anomia simplex)
- Common Periwinkle (Littorina littorea)
- Channeled Whelk (Busycotypus canaliculatus)
- Eastern Mudsnail (Ilyanassa obsoleta)
- The most observed mollusc in Connecticut is Shark Eye (Neverita duplicata), with 1,410 recorded observations.
- Some of the most commonly observed native molluscs in Connecticut include:
- Piedmont Elimia (Elimia virginica)