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Garden Snail
Cornu aspersum
454 observations
Leopard Slug
Limax maximus
180 observations
Brown-lipped Snail
Cepaea nemoralis
170 observations
Black Slug
Arion ater
134 observations
Kerry Slug
Geomalacus maculosus
110 observations
White Italian Snail
Theba pisana
99 observations
Portugala inchoata
Portugala inchoata
98 observations
Atlantic Dogwhelk
Nucella lapillus
73 observations
Lined Top Shell
Phorcus lineatus
51 observations
Common Octopus
Octopus vulgaris
49 observations
Striped false limpet
Siphonaria pectinata
49 observations
Mauge's Slug
Testacella maugei
48 observations
Depilatory Seahare
Aplysia depilans
48 observations
Common Door-snail
Clausilia bidentata
37 observations
Mediterranean Mussel
Mytilus galloprovincialis
36 observations
Small Pointed Snail
Cochlicella barbara
36 observations
Yellow Cellar Slug
Limacus flavus
36 observations
European cowrie
Trivia monacha
34 observations
European Common Cuttlefish
Sepia officinalis
29 observations
Sooty Seahare
Aplysia fasciata
27 observations
Oestophora lusitanica
Oestophora lusitanica
24 observations
European Sting Winkle
Ocenebra erinaceus
24 observations
Oestophora barbella
Oestophora barbella
22 observations
Asian Clam
Corbicula fluminea
21 observations
Balea heydeni
Balea heydeni
21 observations
Netted Dogwhelk
Tritia reticulata
20 observations
Ponentina revelata
Ponentina revelata
17 observations
Solid Surfclam
Spisula solida
17 observations
Slender Amber Snail
Oxyloma elegans
17 observations
Thick-lipped Dogwhelk
Tritia incrassata
16 observations
Carthusian Nun Snail
Monacha cartusiana
15 observations
Acute Bladder Snail
Physella acuta
15 observations
Purple Topshell
Steromphala umbilicalis
14 observations
Blue-rayed Limpet
Patella pellucida
13 observations
Black-footed Limpet
Patella depressa
12 observations
Common Cockle
Cerastoderma edule
11 observations
Common Chrysalis-Snail
Lauria cylindracea
11 observations
Common European Limpet
Patella vulgata
10 observations
Draparnaud's Glass Snail
Oxychilus draparnaudi
10 observations
European Bittersweet Clam
Glycymeris glycymeris
10 observations
Small Periwinkle
Melarhaphe neritoides
10 observations
Semicassis saburon
Semicassis saburon
10 observations
Rounded Snail
Gonyodiscus rotundatus
9 observations
Girdled Snail
Hygromia cinctella
7 observations
Milky Slug
Deroceras reticulatum
7 observations
Greenhouse Slug
Milax gagates
7 observations
Rough Periwinkle
Littorina saxatilis
6 observations
Peppery Furrow Shell
Scrobicularia plana
6 observations
Glossy Pillar
Cochlicopa lubrica
6 observations
Crepipatella dilatata
Crepipatella dilatata
6 observations
Frequently Asked Questions
- The 10 most common molluscs in Porto are:
- Garden Snail (Cornu aspersum)
- Leopard Slug (Limax maximus)
- Brown-lipped Snail (Cepaea nemoralis)
- Black Slug (Arion ater)
- Kerry Slug (Geomalacus maculosus)
- White Italian Snail (Theba pisana)
- Portugala inchoata
- Atlantic Dogwhelk (Nucella lapillus)
- Lined Top Shell (Phorcus lineatus)
- Common Octopus (Octopus vulgaris)
- The most observed mollusc in Porto is Garden Snail (Cornu aspersum), with 454 recorded observations.