hyper-realistic portrait of a stunning mermaid sitting on a jagged volcanic reef. Violent stormy ocean with massive crashing waves, sea spray, and distant lightning. The only light source is a soft, ethereal full moon illuminating the scene. The mermaid has long, flowing wet hair tangled by the wind, and her tail is made of shimmering, dark iridescent scales that catch flashes of lightning. High contrast, dark fantasy masterpiece, cinematic lighting, (8k resolution —ar 9:16), —style raw —v 6.0