A photorealistic scene of a mermaid gracefully swimming in the deep ocean, surrounded by shimmering air bubbles, her scales reflecting a spectrum of light blue hues. The underwater landscape is illuminated by a floodlight, casting cinematic shadows across the coral and seaweed. Her long, flowing hair dances with the gentle currents as beams of light break through the water's surface, creating an ethereal glow in the crystal-clear environment, captured in stunning 8K resolution, aspect ratio 1:2.