11-year-old American boy, blonde, with short, straight, perfectly groomed and well-maintained blonde hair, very tidy and close to the scalp even with wind and water, natural hair but impeccably styled like in the building photo, no flying or messy hair, clear side view of full profile, visible face from the side, excited and serene expression. He is riding a very realistic great white shark, firmly seated astride its back as if horseback riding, legs on either side, holding onto the dorsal fin with both hands, stable posture. The boy is wearing a wet white polo shirt clinging to his body. The shark is hyper-realistic, perfect anatomy of a great white shark, rough skin with detailed texture, natural scars, realistic gills and eyes, no toy-like appearance. The shark is swimming at moderate speed just below the surface, with part of its back and dorsal fin out of the water, creating natural waves and splashes. Scene in the open sea during the day, clear natural light, deep blue ocean. Dynamic side shot, extreme photorealism, perfectly styled and controlled hair, ultra-realistic details in skin, wet polo, shark texture and water, 8k, ultra-realistic, masterpiece, best quality, National Geographic style