watercolor of a sea dweller seashell. underwater world. tropical shell

animal aqua aquarium aquatic background cartoon clam cockleshell conch cone creature crustacean decoration design dweller elegant element exotic external fossil helix home illustration isolated marine mollusc mollusk mussel nature nautical nautilus ocean old ornament oyster painting print protection scallop sea seashell seashore shape shell shellfish shore silhouette simple skeleton sketch snail spiral swirl tropical undersea underwater vector water watercolor white wildlife world