seaweeds silhouettes. underwater coral reef, hand drawn sea kelp plant, marine weeds. sketch aquarium

abstract alga algae aquarium aquatic art background cartoon collection coral creature deep doodle drawing drawn elements fauna flora flourish frame hand icon illustration isolated kelp laminaria leaf leaves life line marine nori ocean outdoor plant reef salad sea seaweeds set silhouettes sketch spirulina sponge undersea underwater vector water weeds white