This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FMIB Black sandshell Lampsilis recta marsupium occupying only posterior end of outer gills.jpeg check categories September Black sandshell Lampsilis recta marsupium occupying only posterior end of outer gills Subject Freshwater mussels Lampsilis Tag Shellfish Cite book Natural History and Propagation of FreshWater Mussels Bulletin