Breathtaking photorealistic portrait of an ethereal mermaid with long, glowing vibrant fire-red flowing hair, luminous wet skin, and piercing green eyes. She has an iridescent dark-teal scaly tail. She is perched on a jagged black volcanic rock in the center of a violently churning moonlit ocean. Massive, powerful waves crash against the reef, splashing mist and bioluminescent seawater into the dark air. The only light source is a stark, cold supermoon, casting dramatic cinematic highlights across her wet skin and shimmering scales. Hyper-realistic water physics, intricate scale textures, dark fantasy aesthetic, ultra-detailed, masterpiece, 32k UHD, cinematic lighting.