H.B. Warner
Prof. Dangerfield
Acting
Louise Fazenda
Mrs. Fleming
Acting
Jacqueline Logan
Irene
Acting
Henry B. Walthall
Capt. Rhodes - Yacht Commander
Acting
Claude Gillingwater
James Rutherford - Expedition Leader
Acting
John Miljan
Dr. Milo
Acting
George Beranger
Simpson - Guide
Acting
Warner Richmond
First Mate
Acting
Floyd Shackelford
Sam - Cook
Acting
Lionel Belmore
Amos Sewald
Acting
Charles Gemora
Gorilla (uncredited)
Acting