cartoon algae. doodle sea green plant grows in sand. aquarium marine botanical decoration . seaweed greenery

algae seaweed sea underwater plant aquarium marine undersea kelp laminaria spirulina doodle botanical ocean greenery natural flora aquatic aqua reef deep grass leaf water seascape exotic floral tropical nautical grow sand nature herb organic foliage food coral wildlife decoration decorative outline object vector graphic mockup template element cartoon green isolated