Photo 3939018, (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 2 photos What California Boring Sponge (Cliona californiana) Observer rebeccafay Date June 7, 2016 07:39 AM MST Place San Mateo, California, United States (Google, OSM) Date Added June 7, 2016 01:26 PM PDT 1 comment 2 IDs Research Grade View Sizes small medium large original