In the center of the page, a large shark sits patiently on a tall lifeguard chair. Notice the sign on the side that clearly states Shark Guard on Duty. The shark is accessorized with a small lifeguard hat and a whistle hanging around its neck.

Below the chair, the ocean floor is teeming with life. You can find several starfish, scattered seashells, and patches of coral and seaweed. Small fish swim nearby, watching the guard work, while tiny bubbles float up toward the surface through the underwater landscape. The entire scene provides plenty of shapes to color, from the jagged edges of the coral to the smooth curves of the shark's fins.

Since this is a cartoon scene, you can use any colors you like. For a classic look, try shades of grey or light blue for the shark, but a bright red or orange for the lifeguard chair will make it stand out against the blue water. The lifeguard hat and whistle could be colored in bold primary colors like yellow or red to show they are official equipment.

For the background, layering different shades of blue and green can create a sense of depth in the water. Use vibrant pinks, purples, and oranges for the coral and starfish to make the bottom of the ocean look like a tropical paradise. If you want to add a special touch, use a silver gel pen or a light grey crayon to make the bubbles look like they are shimmering.