Photo 6908053, (c) Sylvia Scharf, some rights reserved (CC BY), uploaded by Sylvia Scharf

Attribution © Sylvia Scharf some rights reserved Uploaded by sylviascharf Source iNaturalist Associated observations Photos / Sounds What Common Periwinkle (Littorina littorea) Observer sylviascharf Date May 24, 2012 08:54 AM EDT Place Monhegan, ME, USA (Google, OSM) Date Added April 6, 2017 04:05 PM EDT 2 IDs Research Grade View Sizes small medium large original