3D渲染写实风海洋生态海豚群游珊瑚礁海底世界插画

3D rendered illustration, blue and dark blue color scheme, with yellow and white accents, group of four streamlined gray dolphins swimming in the ocean, distributed at different positions in the scene, natural poses, some near the surface, others deep underwater, as if playing or foraging, colorful and diverse coral reef in the lower right corner, schools of small fish scattered around the dolphins, adding liveliness to the scene, sparkling water surface reflecting the sky, blue sky and white clouds above the surface, enhancing the sense of space, delicate bubbles and light effects in the water, background with gradient blue tones from light to dark, creating a deep underwater world atmosphere, overall visual effect fresh and natural, conveying a sense of tranquility and vitality, as if immersed in a beautiful underwater world