Photo 29652862, (c) JJ Johnson, some rights reserved (CC BY-NC), uploaded by JJ Johnson

Attribution © JJ Johnson some rights reserved Uploaded by metsa Source iNaturalist Associated observations Photos / Sounds 3 photos What Bark Barnacles (Thelotrema lepadinum) Observer metsa Date December 27, 2018 10:19 AM PST Place San Mateo County, CA, USA (Google, OSM) Date Added December 29, 2018 09:56 AM PST 2 IDs Research Grade View Sizes small medium large original Copyright