Photo 3920187, (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 What Smooth Urn Sponge (Leucilla nuttingi) Observer kestrel Date June 5, 2016 07:04 AM MST Place Duxbury Reef, Marin, California, United States (Google, OSM) Date Added June 5, 2016 05:33 PM PDT 2 IDs Research Grade View Sizes small medium large original