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:
Annuli on scallop shell. en Atlantic sea scallop Placopecten magellanicus You can tell how old scallop is by counting the number of annuli rings on their shells kind of like counting tree rings on stump fishwatch gov htm NOAA FishWatch see Gallery author PDUSGov Uploaded with Placopecten magellanicus