The Frog Princess
In another Ukrainian variant that begins as tale type ATU 402, "The Animal Bride", akin to Russian "The Frog Princess", the human prince marries the frog maiden Maria and both are invited to the tsar's grand ball. Maria takes off her frog skin and enters the ballroom as human, while her husband hurries back home and burns her frog skin. When she comes home, she reveals the prince her cursed state would soon be over, says he needs to find Baba Yaga in a remote kingdom, and vanishes from sight in the form of a cuckoo. He meets Baba Yaga and she points to a lake where 30 swans will alight, his wife among them. He hides Maria's feather garment, they meet again and Maria tells him to follow her into the undersea kingdom to meet her father, the Sea Tsar. The tale ends like tale type ATU 313, with the three tasks.