The Triton (prologue) (as Uni Apollon)
Apollon Uni
Don Esteban Ferragut (prologue) (as Alex Nova)
Álex Nova
Doctor Fedelmann (as Mme. Paquerette)
Madame Pâquerette
Count Kaledine
Fernand Mailly
Submarine Commander (as André von Engelman)
Andrews Engelmann
Servant (uncredited)
John George
Don Esteban's Son - Ulysses (prologue)
Kada-Abd-el-Kader
Caragol (prologue)
Hughie Mack
Freya Talberg
Alice Terry
Ulysses Ferragut
Antonio Moreno
Ferragut's Wife - Dona Cinta (as Mle. Kithnou)
Mademoiselle Kithnou
Ferragut's Son - Esteban (as Michael Brantford)
Mickey Brantford
Ferragut's Niece - Pepita
Rosita Ramírez
Toni - the Mate (as Fredrick Mariotti)
Frédéric Mariotti
Director
Rex Ingram
Producer
Director of Photography
John F. Seitz
Assistant Director
Giuseppe Amato
Writer
Willis Goldbeck
Novel
Vicente Blasco Ibáñez
Art Direction
Ben Carré
Editor
Grant Whytock
Executive Producer
George Noffka
Walter Pallman
John Birkel
Joseph Boyle
Harry Lachman
Production Manager