scallop seashell logo. silhouette and contour drawing of a scallop on a white background

line drawing wing circle sketch pattern font cartoon design brand lighting iron diagram white symmetry monochrome scallop seashell logo isolated silhouette contour background mollusk sea marine shell underwater vector ocean graphic black icon outline animal hand element beach summer nature cockleshell doodle water linear seafood vintage aquarium clam art wildlife set aquatic tattoo nautical pearl collection shells conch shellfish