Photo 61509624, (c) tyoliversmith, some rights reserved (CC BY-NC)

Attribution © tyoliversmith some rights reserved Uploaded by tyoliversmith Source iNaturalist Associated observations Photos / Sounds What California Mussel (Mytilus californianus) Observer tyoliversmith Date February 15, 2020 11:33 AM UTC Place Presidio of San Francisco, San Francisco, CA, US (Google, OSM) Date Added February 15, 2020 07:34 PM UTC 2 IDs Research Grade View Sizes small medium large original