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A cute, friendly cartoon-style blue whale swimming underwater in a vibrant coral reef environment, centered composition, large rounded body with smooth glossy skin, big expressive eyes and a wide smiling mouth, soft light reflections on the whale’s surface. Surrounding the whale are small colorful clownfish (orange with white stripes) and a small blue fish, swimming playfully around it. The underwater scene is filled with detailed coral formations in pastel tones (pink, purple, orange), soft sea plants gently waving, bubbles rising in the water.

Lighting is soft, magical, and diffused sunlight rays coming from above the water surface, creating a dreamy atmosphere. The water is crystal clear with a turquoise-blue gradient background. The style is highly polished 3D cartoon, Pixar/Disney-inspired, ultra smooth textures, soft shadows, global illumination, high detail, depth of field, vibrant colors, cinematic composition, ultra high resolution, 4K, sharp focus, fantasy underwater world, joyful and child-friendly mood.