A breathtaking portrait of an enchanting mermaid with flowing, luxurious hair, surrounded by a swarm of shimmering silverfish amidst a vibrant tapestry of coral and marine life. The dim underwater light filters gently through the depths, creating a serene ambiance. Shot with a cinematic eye, 35mm, F/2.8, the scene features an elegant vignette, 4k resolution, and perfectly positioned spotlight. The lighting is cinematic, highlighting the mermaid's exquisite features and ornate details, achieving an overall composition that is incredibly detailed, intricate, and beautiful, with a harmonious blend of elegance and opulent detail.