Photo 19841220, (c) Rebecca Johnson, some rights reserved (CC BY-NC), uploaded by Rebecca Johnson

Attribution © Rebecca Johnson some rights reserved Uploaded by rebeccafay Source iNaturalist Associated observations Photos / Sounds What Rough Keyhole Limpet (Diodora aspera) Observer rebeccafay Date June 16, 2018 09:50 AM PDT Place San Mateo County, CA, USA (Google, OSM) Date Added June 16, 2018 09:27 PM PDT 2 IDs Research Grade View Sizes small medium large original