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![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/Tagged%20Mussel.jpg.webp?itok=a42ok0gN)
A tagged mussel.
![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/Ann-ChristelWeighing.jpg.webp?itok=wrUXiJEg)
Ann Christel weighs a mussel before tagging.
![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/SCgroup.jpg.webp?itok=7vsn0xnP)
Sierra Club volunteers tag and weigh freshwater mussels.
![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/Flow%20system.jpg.webp?itok=Udpo0j8b)
Volunteers gather at the end of a pier to check the flow system.
![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/Returning%20to%20Flow%20system.jpg.webp?itok=SWi45ClI)
Volunteers return freshwater mussels to the water using a cage.
![](/sites/default/files/styles/sierra_full_page_width/public/2023-02/Group.jpg.webp?itok=OI-1eZ0B)
The group of volunteers gathers for a photo after all their hardwork.