seashells with bubbles hand drawn graphic etching sketch, seamless pattern, underwater artistic marine ornament, for

aquarium aquatic backdrop background bubbles cockleshell collection color coloring conch contour decoration decorative design drawing drawn element etching graphic hand illustration ink marine mollusk nautilus ocean ornament oyster paper pattern scallop sea seafood seamless seashell seashore seaside shell shellfish silhouette sketch snail spiral underwater vector vintage wallpaper wildlife wrapping