Ariel, 17, Disney little mermaid, full-body pose, high-resolution 16K UHD HDR underwater scene, swimming amidst seaweed, serene coral reef, school of glittering fish, shimmering scales, sea anemones, oceanic hues, coral formations, drowned treasures, mysterious shipwreck, hidden treasure, glow-in-the-dark jellyfish, luminescent waves increasing resolution, blooming cherry blossoms underwater, verdant seaweed forest, creation of an hybrid mer-human, face mutation with crossed eyes, elongated neck, extra fingers on mutated hands, empowered fins, glowing bioluminescent aura, evolved from original mermaid, ethereal beauty