1girl, bare legs, blowhole, blue dress, blue eyes, blue hair, blush, bow, cetacean tail, choker, dolphin girl, dorsal fin, dress, fins, fish tail, footwear bow, frilled dress, frills, grey hair, legs apart, multicolored hair, neckerchief, sailor collar, sailor dress, short dress, short hair, short sleeves, smile, solo, swimming, tail, underwater, white choker, white footwear, white neckerchief