PROMPT:
A whimsical underwater metropolis filled with wacky sea creatures and steampunk-inspired machinery, set against a backdrop of iridescent turquoise and emerald green coral reefs, with schools of rainbow-striped fish darting through the streets, while a giant octopus in a top hat and monocle operates a massive organ-like contraption, surrounded by a chorus of singing mermaids, their shimmering scales reflecting shafts of sunlight filtering down from above, all rendered in a vibrant, photorealistic comic book style with bold lines and textures.
