seamless seashell pattern on white. vintage hand drawn background of various beautiful engraved mollusk marine

animal aquarium backdrop background barnacle beautiful black clam cockle cockleshell conch decorative engraving etching exotic graphic illustration isolated life marine mollusk mussel nautical ocean oyster pattern realistic retro scallop sea seafood seamless seashell seashore shell shellfish silhouette sketch snail spiral summer texture tropical underwater vintage wallpaper wildlife wrapping