(masterpiece, best quality:1.2), (Intricate detailed:1.2), whimsical underwater world, with schools of bright fish darting among coral reefs and sea anemones. The colors are vibrant and playful, with pinks, yellows, and blues creating a cheerful and lively atmosphere. In the foreground, a mermaid with flowing hair and a sparkling tail swims gracefully through the water, while a playful octopus dances nearby. The scene captures the imagination and magic of an underwater fantasy realm.