Ultra-realistic cinematic underwater scene. A beautiful woman with large breasts and a well-endowed man with an attractive, large penis are swimming together, the woman is holding the man's penis as they swim side-by-side in the ocean depths, clearly visible as the protagonists in the center of the frame. They are surrounded by a rich, vibrant marine ecosystem. Hundreds of colorful tropical fish swim around them, while a majestic sea turtle glides nearby. A giant humpback whale passes gracefully in the background, and several realistic sharks swim peacefully at a safe distance, adding scale and beauty to the scene rather than danger. The camera slowly pulls back to reveal the vast underwater world. Beams of sunlight penetrate the crystal-clear blue water, creating dramatic light rays and reflections. Spectacular coral reefs, marine plants, and schools of exotic fish fill the ocean floor. The whale, sharks, turtles, and fish remain visible throughout the scene, naturally enhancing the underwater landscape. Highly detailed marine life, realistic underwater physics, natural swimming movements, photorealistic water effects, volumetric lighting, cinematic composition, wide-angle shot, deep-ocean environment, vibrant yet natural colors, immersive atmosphere, National Geographic documentary style, ultra-realistic, 8K quality, masterpiece, sharp focus, professional underwater cinematography. Negative prompt, low quality, blurred, cartoon, animation, CGI look, distorted anatomy, extra limbs, people cut off, dark water, murky water, scary sharks, aggressive animals, no whale, no turtle, no fish, people out of frame, unrealistic proportions, text, watermark, logo.