Public domain photos

The image shows a scallop shell on a gray surface with a ruler next to it. The shell is a light brown color with a ridged texture and a small indentation in the center. The ruler is a standard size with a black handle and a white body.

The image shows a scallop shell on a gray surface with a ruler next to it. The shell is a light brown color with a ridged texture and a small indentation in the center. The ruler is a standard size with a black handle and a white body.Open in library