照實渲染的彩虹海豚悠游於寧靜清澈的海洋

A highly realistic, ultra-detailed image of a cute and innocent dolphin with soft rainbow-colored skin, плавing gracefully in crystal-clear ocean water. The dolphin looks gentle, pure, and magical, with sparkling expressive eyes and a soft natural smile. Its rainbow colors blend smoothly and naturally (not cartoonish), reflecting sunlight beautifully on the water surface. The ocean is calm with golden sunlight rays entering through the water, creating a dreamy underwater atmosphere. 8K resolution, photorealistic, cinematic lighting, shallow depth of field, highly detailed texture, National Geographic style photography, ultra HD, natural water reflections.