A mermaid gracefully floats in the twilight-blue depths of the ocean, surrounded by shimmering air bubbles that catch the light like tiny lanterns. Her flowing hair shimmers in hues of aquamarine and seafoam, reflecting the gentle glow of a distant floodlight. The scene is a masterpiece of photorealism, with each scale on her tail glistening like liquid silver. Cinematic lighting enhances the serene beauty of her underwater world, casting soft shadows that dance across the ocean floor. The 16K image captures the enchanting allure of this mythical creature, with a vertical aspect ratio highlighting her delicate elegance amidst the vast marine expanse.