A mermaid gracefully drifting through the depths of the ocean, surrounded by shimmering air bubbles, with iridescent scales that catch the soft, dappled light. Her long, flowing hair undulates with the current, glowing softly in an ethereal light blue hue. The scene captures stunning photorealism in 8K resolution, with cinematic floodlights creating dynamic shadows and highlighting the intricate details of her delicate features and the subtle textures of the ocean floor. The elongated composition captures the serene beauty and mystique of this underwater world, evoking a sense of wonder and tranquility.