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Molluscs › Periwinkle Snails

Flat Periwinkle

Littorina obtusata

4,318 observations in the source records

Wildlife study photograph from iNaturalist.
(c) riainnature, some rights reserved (CC BY)

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.

Photos you add are credited to you, and you keep the copyright.

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 462, February 341, March 534, April 841, May 1,212, June 1,321, July 1,414, August 1,216, September 893, October 666, November 364, December 285.
United States11,281
Alaska9,548
Canada2,139
Quebec823
Massachusetts587
Maine580
New Brunswick553
Nova Scotia505
New York104
New Hampshire94

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