Photo 61995713, (c) Amy Miles, some rights reserved (CC BY-NC), uploaded by Amy Miles

Attribution © Amy Miles some rights reserved Uploaded by facebiter3000 Source iNaturalist Associated observations Photos / Sounds What Checkered Periwinkle (Littorina scutulata) Observer facebiter3000 Date February 22, 2020 03:39 PM HST Place San Francisco, CA, USA (Google, OSM) Date Added February 22, 2020 04:32 PM HST 2 IDs Needs ID View Sizes small medium large original