Mare Nostrum

The Triton (prologue) (as Uni Apollon)

Don Esteban Ferragut (prologue) (as Alex Nova)

Don Esteban's Son - Ulysses (prologue)

Caragol (prologue)

Freya Talberg

Ulysses Ferragut

Ferragut's Wife - Dona Cinta (as Mle. Kithnou)

Ferragut's Son - Esteban (as Michael Brantford)

Ferragut's Niece - Pepita

Toni - the Mate (as Fredrick Mariotti)

Doctor Fedelmann (as Mme. Paquerette)

Count Kaledine

Submarine Commander (as André von Engelman)

Servant (uncredited)