Photo 81205, (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 Northern Horsemussel (Modiolus modiolus) Observer kestrel Date September 17, 2008 Place Trinidad Beach State Park, Trinidad, CA (Google, OSM) Date Added February 7, 2012 08:47 PM PST Description Living within M. californianus bed. M. modiolus? 1 comment 2 IDs Research Grade View Sizes small medium large original