Trivia: Marina never spoke throughout the entire series, except in this episode where she appears to communicate with Troy, but this is only part of his dream while he was unconscious. In the sequence her lips do not move because the puppet had no speech mechanism, but instead her thoughts are heard. The voice of Marina was provided by Sylvia Anderson.
Trivia: One of the characters is Captain Black - a name of a character who would appear in a forthcoming Gerry Anderson creation, "Captain Scarlet & The Mysterons".
Trivia: Troy and Marina visit the Restaurant Casablanca, which also appears in the closing credits.
Trivia: This is the only episode in the series that Stingray does not appear.
Trivia: Sixteen minutes of this episode is made up of footage from the episodes "Emergency Marineville", "Raptures Of The Deep" and "Subterranean Sea".
In Search Of The Tajmanon - S1-E28
Trivia: This is the only episode in which Marina does not appear.
