Create a high-resolution, photorealistic image of a serene underwater scene in a coral reef. The scene should capture the vibrant and diverse marine life that inhabits the reef. Schools of colorful fish, including angelfish, clownfish, and parrotfish, swim gracefully among the corals. The corals themselves are a stunning array of shapes and colors, from branching staghorn corals to large plate corals and soft, waving sea fans. A graceful sea turtle glides through the water, its shell reflecting the dappled sunlight that filters down from the surface. In the background, a small reef shark can be seen patrolling the area. The water is crystal clear, allowing for a full view of the underwater paradise. Bubbles rise to the surface, creating a sense of movement and life. The overall image should evoke a sense of wonder, tranquility, and the breathtaking beauty of the ocean's depths.