At the center of this underwater world, two large ancient arches and several columns stand tall among the rocks. A sophisticated octopus wearing a fancy top hat floats near the ruins, while a turtle glides gracefully through the water nearby. You can spot a small submarine exploring the depths, surrounded by playful bubbles and schools of small fish.

Hidden among the seaweed and coral, two overflowing treasure chests sit on the sandy floor, spilling out pearls and coins. Starfish rest on the stones, adding more detail to the ocean floor. Every corner of this scene is packed with life, from the delicate textures of the sea plants to the solid, weathered look of the sunken architecture.

To make the ancient ruins look realistic, try using different shades of gray or sandy tan, perhaps adding hints of green to show where moss might be growing underwater. The octopus can be any bright color you like, perhaps a vibrant purple or orange to stand out against the blue water. Use a shimmering yellow or metallic gold for the treasure chests and the pearls inside to make them look like they are glowing under the sea.

For the ocean background, you might use a gradient of blues, going from a light sky blue at the top to a deeper navy at the bottom. Adding a touch of white or very light blue to the bubbles will give them a translucent, airy feel. This page has a moderate level of detail, so taking your time with the small fish and starfish will really make the final picture pop.