Underwater Library with Fish

A library built on the ocean floor, tall wooden bookshelves filled with books, a large round window with light filtering down from the surface, schools of small fish swimming between the shelves, a octopus curled up reading a book, soft blue-green light, clean illustrative style, no text Art direction controls: deep cobalt, warm cream, and charcoal, a centered hero composition with deliberate negative space, quiet and editorial.