A legendary great white shark superhero adorned in elaborate, ornate armor stands heroically in the majestic underwater city of Atlantis. The backdrop features a vibrant tapestry of shimmering water, schools of fish, and the soft hues of dawn casting a magical glow. Rendered in a striking movie poster style, the scene is infused with the dynamic characteristics of anime and manga, boasting vivid colors and intricate details. The composition is designed for an 8K HD print in CMYK, capturing the mood of happiness and cinematic lighting, with a tall, dramatic frame.