At the center of the page, a friendly sea turtle glides gracefully through the water. Below it sits a wooden treasure chest that has burst open to reveal a hoard of gold coins. Several small fish circle the treasure, perhaps wondering where it came from. The background is filled with swaying seaweed and textured coral growing near sturdy rocks.

The sandy ocean floor provides a solid base for the scene, while stylized waves at the top and tiny bubbles throughout add a sense of movement to the aquatic environment. Each element is clearly outlined, making it easy to distinguish between the hard shell of the turtle and the soft, flowing leaves of the underwater plants.

For the sea turtle, try using different shades of green or brown on its shell to create a realistic pattern. The treasure chest looks great in deep wood tones like mahogany or oak, while the gold coins should be the brightest yellow or orange you have. You can use light blue or teal for the surrounding water, making it darker near the bottom and lighter toward the surface.

Don't forget to use vibrant pinks, purples, or reds for the coral to make the reef look lively. If you want to add a special touch, use a white gel pen or silver crayon to add highlights to the bubbles and the metallic surfaces of the treasure. This will make the sunken riches appear to sparkle under the sea.