A Cidade Submarina was released in the year 1965。A Cidade Submarina is also called as The City Under the Sea, War-Gods of the Deep, Stadt unter dem Meer, Stadt im Meer, Piratbyen under havet, Merenalainen kaupunki, Ciudad bajo el mar, City in the Sea, 20.000 leghe sotto la Terra。

Set on the Cornish coast in 1903, the film features a group of people discovering an underwater society of smugglers who never age living in a lost underwater city along with their gill-man slaves.