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Molluscs › Periwinkle Snails

Common Periwinkle

Littorina littorea

23,434 observations in the source records

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Wildlife study photograph from iNaturalist.
(c) doryx, some rights reserved (CC BY-NC)

28 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

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What the records say

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Alaska.January 1,773, February 1,309, March 2,051, April 3,227, May 4,653, June 5,074, July 5,430, August 4,670, September 3,428, October 2,559, November 1,398, December 1,093.
United States45,146
Alaska36,664
Canada5,296
Maine3,334
Nova Scotia3,014
Massachusetts2,948
Quebec2,872
United Kingdom1,291
New Brunswick906
Newfoundland and Labrador773

Counts show where people looked, not only where it lives.

Traits

Physical

  • Shell-bearingProtected by a hard shellFrom its classification

Classification

KingdomAnimals · Animalia
PhylumMolluscs · Mollusca
ClassGastropods · Gastropoda
OrderLittorinimorpha
FamilyPeriwinkle Snails · Littorinidae
GenusLittorina

Sources

Remember the name next time.

Practise Common Periwinkle with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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