A lifelike mermaid gracefully swimming through the deep ocean, surrounded by shimmering air bubbles. The scene is bathed in ethereal light blue hues, highlighting the texture of her iridescent scales. The underwater setting is illuminated by floodlight, creating stunning cinematic lighting effects. The overall composition is in ultra-high resolution, capturing every exquisite detail as the mermaid glides effortlessly through the serene aquatic environment. The aspect ratio is a vertical orientation to emphasize the depth and majesty of the scene.