Полина Авдеенко
— Dolphin Boy (voice)
Юлия Рудина
— Dolphin Snezhok / Captain’s wife / Flounder 1 (voice)
Александр Фенин
— Captain (voice)
Борис Хасанов
— Octopus / Shark (voice)
Александр Васильев
— Turtle / Blue fish / Flying fish / Seahorse / Dolphin / Old sailor (voice)
Юлия Зоркина
— Witch / Girl’s mother (voice)
Василиса Ушакова
— Nana / Fish / Flounder 2 (voice)