During the filming, Elliott did not always follow the scripted camera movements, replacing elaborate tracking shots with simpler establishing shots. The underwater chase sequence features a complex model shot in which "Stingray" briefly leaps out of the sea, followed by the Mechanical Fish. Although the speed and precise movements required made the shot a technical challenge, to the surprise of special effects director Derek Meddings it was filmed in a single take. The shot was later incorporated into the series' title sequence.