The Five from the Moby Dick

Name: The Five from the Moby Dick
Director: Todor Stoyanov
Genre: Adventure, Comedy, Family
Released: 1970-03-06
Rating: 7.3
Cast: Georgi Partsalev, Marius Donkin, Irinei Konstantinov, Sashka Bratanova, Maya Dragomanska

Two young couples decide to spend some vacation days on a small uninhabited island. Alas, soon they'll find out that the place turns to be not so isolated.