A medium shot, eye-level anime illustration depicting a beautiful mermaid girl swimming gracefully in the deep ocean. The girl has long, flowing hair that drifts in the current and a shimmering, iridescent fish tail with translucent fins. She is positioned centrally, her hands gently brushing against the surface of an ancient, rusted shipwreck that rests on the sandy seabed. Surrounding her are vibrant, multicolored coral reefs and swaying sea anemones, with tiny bubbles and schools of iridescent fish drifting through the water. The atmosphere is serene and mystical, with ethereal beams of sunlight filtering down from the surface, creating a shimmering caustic effect on the ocean floor. The color palette is dominated by deep teals, aquamarine, and vivid coral pinks, featuring a soft depth of field and floating marine particles that enhance the underwater feeling.