Woman floats gracefully with a turtle in a sunlit tropical lagoon

Ultra-realistic IMAX-level Netflix-style tropical split-water underwater portrait, 9:16 vertical composition, a young woman swimming gracefully just beneath the crystal-clear ocean surface beside a sea turtle in a shallow turquoise lagoon, body stretched forward in a natural swimming pose with one arm extended and hair flowing backward through the water, facial expression: joyful, calm and quietly amazed with a soft natural smile and relaxed eyes, outfit: elegant pastel floral swimwear with realistic underwater fabric texture, environment: breathtaking tropical island scene with the frame split between above-water and underwater views, upper half showing bright blue sky, soft white clouds, lush palm trees, white sandy beach and dramatic green limestone cliffs, lower half revealing clear aquamarine water, rippled sandy seabed, sun-caustic patterns dancing across skin, turtle shell and ocean floor, the sea turtle swimming peacefully beside her with realistic shell markings, flippers and gentle motion, lighting: bright cinematic tropical daylight with sunlight breaking through the water surface, shimmering reflections, natural underwater distortion and soft warm highlights on face and shoulders, color grading: premium Netflix-style clean aqua, emerald green and sunlit sand palette with crisp contrast, realistic HDR clarity and soft tropical glow, camera: wide-angle underwater lens feel, sharp focus on the woman and turtle with natural depth falloff toward the beach and cliffs, skin finish extra soft, luminous and appealing while preserving realistic pores and natural texture, overall mood peaceful, adventurous, dreamy and luxury-travel cinematic with premium 4K editorial realism. Face Lock: preserve natural facial identity, proportions, hairstyle and skin texture, no identity drift or beautification. Negative Prompt: social media UI, text, watermark, distorted turtle anatomy, bad water physics, blurry face, plastic skin, over-smoothing, harsh flash, murky water, CGI, cartoon, low detail.