Loading species data...
Fetching observations
Common Periwinkle
Littorina littorea
357 observations
Eastern Elliptio
Elliptio complanata
231 observations
Winding Mantleslug
Philomycus flexuolaris
110 observations
Chinese Mystery Snail
Margarya chinensis
108 observations
Atlantic Dogwhelk
Nucella lapillus
106 observations
Blue Mussel
Mytilus edulis
97 observations
Common Atlantic Slippersnail
Crepidula fornicata
73 observations
West Atlantic Surfclam
Spisula solidissima
73 observations
Tortoiseshell Limpet
Testudinalia testudinalis
73 observations
Eastern Whitelip
Neohelix albolabris
66 observations
Flat Periwinkle
Littorina obtusata
61 observations
Western Dusky Slug
Arion subfuscus
54 observations
Atlantic Ribbed Mussel
Geukensia demissa
45 observations
Rough Periwinkle
Littorina saxatilis
40 observations
Soft-shelled Clam
Mya arenaria
40 observations
Eastern Oyster
Crassostrea virginica
38 observations
Northern Moonsnail
Euspira heros
38 observations
Atlantic Jackknife
Ensis leei
36 observations
Triangle Floater
Alasmidonta undulata
35 observations
Changeable Mantleslug
Megapallifera mutabilis
34 observations
Eastern Floater
Pyganodon cataracta
31 observations
Northern Horse Mussel
Modiolus modiolus
27 observations
Leopard Slug
Limax maximus
25 observations
Invasive
Sea Lemon
Archidoris pseudoargus
21 observations
European Flat Oyster
Ostrea edulis
20 observations
Milky Slug
Deroceras reticulatum
20 observations
Northern Quahog
Mercenaria mercenaria
18 observations
Longfin Inshore Squid
Doryteuthis pealeii
18 observations
barnacle-eating dorid
Onchidoris bilamellata
15 observations
Eastern Mudsnail
Ilyanassa obsoleta
15 observations
Common Whelk
Buccinum undatum
15 observations
Pointed Campeloma
Campeloma decisum
15 observations
Meadow Slug
Deroceras laeve
14 observations
Bushy-backed Nudibranch
Dendronotus frondosus
12 observations
Red-fingered Coryphella
Coryphella verrucosa
12 observations
Eastern Oyster Drill
Urosalpinx cinerea
11 observations
Bellmouth Ramshorn
Planorbella campanulata
11 observations
Rounded Snail
Gonyodiscus rotundatus
11 observations
Oval Ambersnail
Novisuccinea ovalis
10 observations
Eastern Lampmussel
Lampsilis radiata
8 observations
Threeline Mudsnail
Ilyanassa trivittata
7 observations
Glossy Pillar
Cochlicopa lubrica
7 observations
Toga Mantleslug
Philomycus togatus
7 observations
Eastern White Slippersnail
Crepidula plana
6 observations
Marsh Ramshorn
Planorbella trivolvis
6 observations
Common Pandora Clam
Pandora gouldiana
6 observations
Banded Mystery Snail
Callinina georgiana
6 observations
Hairy Spiny Dorid
Acanthodoris pilosa
5 observations
Brown-lipped Snail
Cepaea nemoralis
5 observations
Asian Clam
Corbicula fluminea
5 observations
Frequently Asked Questions
- The 10 most common molluscs in New Hampshire are:
- Common Periwinkle (Littorina littorea)
- Eastern Elliptio (Elliptio complanata)
- Winding Mantleslug (Philomycus flexuolaris)
- Chinese Mystery Snail (Margarya chinensis)
- Atlantic Dogwhelk (Nucella lapillus)
- Blue Mussel (Mytilus edulis)
- Common Atlantic Slippersnail (Crepidula fornicata)
- West Atlantic Surfclam (Spisula solidissima)
- Tortoiseshell Limpet (Testudinalia testudinalis)
- Eastern Whitelip (Neohelix albolabris)
- The most observed mollusc in New Hampshire is Common Periwinkle (Littorina littorea), with 357 recorded observations.
- Some of the most commonly observed invasive molluscs in New Hampshire include:
- Sea Lemon (Archidoris pseudoargus)