hand drawn sea life seamless pattern with seahorses, fish, starfish, corals, seashells and jellyfish gray outline

actinia anemone animal aquarium aquatic art background beach bubbles cartoon clam contour coral corals creature design doodle drawing drawn fauna fish gray hand horse jellyfish life line marine monochrome nature nautical ocean outline pattern sea seahorses sealife seamless seashells seaside seaweed shell sketch star starfish summer summertime travel underwater vacation vector weed white