Mare Nostrum
Voltar- Apollon UniThe Triton (prologue) (as Uni Apollon)
- Álex NovaDon Esteban Ferragut (prologue) (as Alex Nova)
- Kada-Abd-el-KaderDon Esteban's Son - Ulysses (prologue)
Hughie MackCaragol (prologue)
Alice TerryFreya Talberg
Antonio MorenoUlysses Ferragut- Mademoiselle KithnouFerragut's Wife - Dona Cinta (as Mle. Kithnou)
Mickey BrantfordFerragut's Son - Esteban (as Michael Brantford)- Rosita RamírezFerragut's Niece - Pepita
Frédéric MariottiToni - the Mate (as Fredrick Mariotti)
Madame PâqueretteDoctor Fedelmann (as Mme. Paquerette)
Fernand MaillyCount Kaledine
Andrews EngelmannSubmarine Commander (as André von Engelman)
John GeorgeServant (sem créditos)