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Leopard Slug
Limax maximus
2,796 observations
Asian Clam
Corbicula fluminea
769 observations
Eastern Oyster
Crassostrea virginica
653 observations
Changeable Mantleslug
Megapallifera mutabilis
370 observations
Brown-lipped Snail
Cepaea nemoralis
366 observations
Marsh Periwinkle
Littoraria irrorata
321 observations
Stout Tagelus
Tagelus plebeius
269 observations
Atlantic Rangia
Rangia cuneata
269 observations
Eastern Elliptio
Elliptio complanata
206 observations
Hooked Mussel
Ischadium recurvum
201 observations
Milky Slug
Deroceras reticulatum
200 observations
Atlantic Ribbed Mussel
Geukensia demissa
198 observations
Blood Ark
Lunarca ovalis
120 observations
Common Atlantic Slippersnail
Crepidula fornicata
119 observations
Eastern Floater
Pyganodon cataracta
116 observations
Northern Quahog
Mercenaria mercenaria
99 observations
Chinese Mystery Snail
Margarya chinensis
99 observations
Western Dusky Slug
Arion subfuscus
95 observations
Atlantic Bay Scallop
Argopecten irradians
90 observations
Knobbed Whelk
Busycon carica
90 observations
Soft-shelled Clam
Mya arenaria
88 observations
Dark Falsemussel
Mytilopsis leucophaeata
86 observations
Carolina Mantleslug
Philomycus carolinianus
86 observations
Globose Dome Snail
Ventridens ligera
84 observations
Common Jingle
Anomia simplex
74 observations
Rounded Snail
Gonyodiscus rotundatus
64 observations
Angelwing
Cyrtopleura costata
62 observations
White-lip Globe Snail
Mesodon thyroidus
59 observations
West Atlantic Surfclam
Spisula solidissima
58 observations
Atlantic Jackknife
Ensis leei
52 observations
Chestnut Clam
Isocrassina castanea
49 observations
Atlantic Macoma
Macoma petalum
43 observations
Hedgehog Slug
Arion intermedius
40 observations
Japanese Mystery Snail
Heterogen japonica
39 observations
Piedmont Elimia
Elimia virginica
37 observations
Shark Eye
Neverita duplicata
35 observations
Channeled Whelk
Busycotypus canaliculatus
32 observations
Blue Mussel
Mytilus edulis
31 observations
Eastern Mudsnail
Ilyanassa obsoleta
30 observations
Garden Arion
Arion hortensis
29 observations
False Angelwing
Petricolaria pholadiformis
29 observations
Eastern Whitelip
Neohelix albolabris
25 observations
Meadow Slug
Deroceras laeve
25 observations
Two-toothed Marsh Snail
Melampus bidentatus
24 observations
Glossy Pillar
Cochlicopa lubrica
24 observations
Marsh Ramshorn
Planorbella trivolvis
21 observations
Winding Mantleslug
Philomycus flexuolaris
20 observations
Northern Lance
Elliptio fisheriana
18 observations
Tidewater Mucket
Atlanticoncha ochracea
18 observations
Flamed Tigersnail
Anguispira alternata
17 observations
Frequently Asked Questions
- The 10 most common molluscs in Maryland are:
- Leopard Slug (Limax maximus)
- Asian Clam (Corbicula fluminea)
- Eastern Oyster (Crassostrea virginica)
- Changeable Mantleslug (Megapallifera mutabilis)
- Brown-lipped Snail (Cepaea nemoralis)
- Marsh Periwinkle (Littoraria irrorata)
- Stout Tagelus (Tagelus plebeius)
- Atlantic Rangia (Rangia cuneata)
- Eastern Elliptio (Elliptio complanata)
- Hooked Mussel (Ischadium recurvum)
- The most observed mollusc in Maryland is Leopard Slug (Limax maximus), with 2,796 recorded observations.
- Some of the most commonly observed native molluscs in Maryland include:
- Tidewater Mucket (Atlanticoncha ochracea)