"Numa", the lion in this film, was the first lion - then called "Leo" - used when the "MGM" logo appears at the beginning of MGM's films.
Jack Hoxie was originally selected for the title role but was later moved to a starring role in a series of comedy westerns.
Kamuela C. Searle was seriously injured during filming. According to the book "Tarzan of the Movies" by Gabe Essoe, Searle died of these injuries. However, other sources state he actually died in 1924.
A prologue summarizing the first three Tarzan films was added to the beginning of the serial.
During the filming at Corona del Mar, the boats "Lady Alice" and "Comfort" replicas were stripped by pirates during the night and no trace of the stolen property was ever found.
Episode titles:1. Call of the Jungle2. Out of the Lion's Jaws3. The Girl of the Jungle4. The Sheik's Revenge5. The Pirate's Prey6. The Killer's Mate7. The Quest of the Killer8. Coming of Tarzan9. The Kiss of the Beast10. Tarzan Takes the Trail11. Ashes of Love12. Meriem's Ride in the Night13. Double Crossed14. Blazing Hearts15. An Amazing Denouement
The original plan was to film the production on a tropical island in the South Pacific where they would use the natives as extras.
The producer hired Norman Tuckey (music) and Osborne Tedman (lyrics) to write the first Tarzan song, "Tarzan, My Jungle King," sheet music. "Written and composed especially for Son of Tarzan" (which was, ironically, a silent movie).
Three actors played Korak in this movie: - 1. Gordon Griffith played Korak as a child (having previously played Tarzan as a child). - 2. Kamuela C. Searle played Korak as an adult. - 3. A third, unidentified actor plays Korak in the final scene, in which he is reunited with his mother and with his beloved Meriem. This actor has short hair and never turns his face to the camera.