Photo 728065, (c) Alison Young, some rights reserved (CC BY-NC), uploaded by Alison Young

Attribution © Alison Young some rights reserved Uploaded by kestrel Source iNaturalist Associated observations Photos / Sounds 2 photos What California Sandcastle Worm (Phragmatopoma californica) Observer kestrel Date March 13, 2014 02:12 PM PDT Place Golden Gate Natl. Rec. Area - MA, Marin, Golden Gate National Recreation Area, California, United States (Google, OSM) Date Added March 17, 2014 09:55 AM PDT 2 IDs Research Grade View Sizes small medium large original