Under the sea during a lively Halloween festival, a graceful dolphin is swimming elegantly while wearing a traditional Japanese yukata. The dolphin smiles joyfully, its colorful yukata flowing with the currents as it glides through the water. The scene is vibrant with the festive atmosphere of Halloween, with marine life surrounding the dolphin, adding to the whimsical and enchanting underwater celebration, illuminated by soft, ethereal lighting. --ar 1:1 --niji 6