A photorealistic full-body scene on a tropical beach with fine white sand. A beautiful young woman is completely naked, sitting on the sand with her legs spread wide and her upper body leaning slightly back, supported by one hand. She has long, wet, tousled light brown hair with golden highlights that clings to her face, shoulders and chest. Her skin is sun-kissed, glowing and slightly tanned, covered in fine wet sand and water droplets that glisten in the sunlight across her breasts, stomach, hips and inner thighs. She has a slender, athletic yet soft body with a flat toned stomach, defined waist, full natural breasts with pink nipples and smooth toned legs. Kneeling closely behind her is a tall, muscular dark-skinned man, completely naked. He has a large, thick, heavy flaccid penis. The woman has reached back between her legs with one hand and is firmly gripping his penis, her fingers wrapped tightly around the shaft while looking over her shoulder toward him. The background shows a calm turquoise ocean meeting a clear blue sky under bright natural daylight. Highly detailed skin textures, realistic wet skin, sand particles, and natural anatomy, cinematic lighting, sharp focus, 8k, photorealistic.