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Leopard Slug
Limax maximus
2,457 observations
Asian Clam
Corbicula fluminea
740 observations
Eastern Oyster
Crassostrea virginica
419 observations
Marsh Periwinkle
Littoraria irrorata
296 observations
Changeable Mantleslug
Megapallifera mutabilis
280 observations
Brown-lipped Snail
Cepaea nemoralis
278 observations
Atlantic Rangia
Rangia cuneata
268 observations
Stout Tagelus
Tagelus plebeius
259 observations
Hooked Mussel
Ischadium recurvum
198 observations
Eastern Elliptio
Elliptio complanata
193 observations
Atlantic Ribbed Mussel
Geukensia demissa
186 observations
Milky Slug
Deroceras reticulatum
184 observations
Blood Ark
Lunarca ovalis
116 observations
Common Atlantic Slippersnail
Crepidula fornicata
113 observations
Eastern Floater
Pyganodon cataracta
107 observations
Northern Quahog
Mercenaria mercenaria
97 observations
Chinese Mystery Snail
Margarya chinensis
97 observations
Western Dusky Slug
Arion subfuscus
92 observations
Soft-shelled Clam
Mya arenaria
87 observations
Atlantic Bay Scallop
Argopecten irradians
86 observations
Dark Falsemussel
Mytilopsis leucophaeata
84 observations
Knobbed Whelk
Busycon carica
81 observations
Common Jingle
Anomia simplex
68 observations
Carolina Mantleslug
Philomycus carolinianus
67 observations
Angelwing
Cyrtopleura costata
60 observations
West Atlantic Surfclam
Spisula solidissima
58 observations
Globose Dome Snail
Ventridens ligera
53 observations
Atlantic Jackknife
Ensis leei
52 observations
Chestnut Clam
Isocrassina castanea
49 observations
White-lip Globe Snail
Mesodon thyroidus
48 observations
Rounded Snail
Gonyodiscus rotundatus
48 observations
Atlantic Macoma
Macoma petalum
43 observations
Hedgehog Slug
Arion intermedius
39 observations
Shark Eye
Neverita duplicata
35 observations
Blue Mussel
Mytilus edulis
31 observations
Eastern Mudsnail
Ilyanassa obsoleta
30 observations
Channeled Whelk
Busycotypus canaliculatus
30 observations
Garden Arion
Arion hortensis
29 observations
False Angelwing
Petricolaria pholadiformis
28 observations
Japanese Mystery Snail
Heterogen japonica
25 observations
Two-toothed Marsh Snail
Melampus bidentatus
24 observations
Piedmont Elimia
Elimia virginica
22 observations
Marsh Ramshorn
Planorbella trivolvis
20 observations
Eastern Whitelip
Neohelix albolabris
17 observations
Meadow Slug
Deroceras laeve
17 observations
Fossor Coquina
Donax fossor
17 observations
Tidewater Mucket
Atlanticoncha ochracea
17 observations
Northern Lance
Elliptio fisheriana
15 observations
Naked Sea Butterfly
Clione limacina
14 observations
Transverse Ark
Anadara transversa
14 observations
Frequently Asked Questions
- The 10 most common molluscs in Maryland are:
- Leopard Slug (Limax maximus)
- Asian Clam (Corbicula fluminea)
- Eastern Oyster (Crassostrea virginica)
- Marsh Periwinkle (Littoraria irrorata)
- Changeable Mantleslug (Megapallifera mutabilis)
- Brown-lipped Snail (Cepaea nemoralis)
- Atlantic Rangia (Rangia cuneata)
- Stout Tagelus (Tagelus plebeius)
- Hooked Mussel (Ischadium recurvum)
- Eastern Elliptio (Elliptio complanata)
- The most observed mollusc in Maryland is Leopard Slug (Limax maximus), with 2,457 recorded observations.
- Some of the most commonly observed native molluscs in Maryland include:
- Tidewater Mucket (Atlanticoncha ochracea)