A photorealistic 4K image of a charming and whimsical underwater scene featuring

A photorealistic 4K image of a charming and whimsical underwater scene featuring a small, adorable octopus with a cute, cartoon-like appearance. The octopus has large, expressive eyes that convey a sweet and friendly look, its body a blend of soft pastel colors like pink, lavender, and light blue. Tiny decorative elements like small flowers adorn its head, adding a delightful touch. The background is a vibrant underwater world teeming with colorful corals, sea anemones, and gently rising bubbles. Soft, glowing sun rays filter down through the water, creating a magical and serene atmosphere. Small, colorful fish swim nearby, enhancing the lively and enchanting underwater environment. The overall feel of the image is playful, cute, and full of wonder, with meticulous attention to detail for an ultra-realistic style. Art inspirations: Pixar, Studio Ghibli. Lighting: Soft and diffused, underwater caustics. Camera: Close-up shot, shallow depth of field. Render: Octane Render, 8K resolution.