Voyage to the Bottom of the Sea (TV series) color episodes. The ship's enlisted men were also given more colorful uniforms (red or light blue jumpsuits) and white Keds Champion sneakers, evidently to take advantage of the changeover from black-and-white filming. The traditional sailor uniforms worn in the first season were only seen in stock footage from the first season and on characters who were newly filmed to match up with that footage. All these changes occurred between seasons. A second-season episode, "The Sky's On Fire", was a remake of the basic storyline of Irwin Allen's 1961 film "Voyage to the Bottom of the Sea" utilizing considerable film color
Voyage to the Bottom of the Sea (TV series) season of 32 episodes began with Admiral Nelson and the crew of the "Seaview" fighting against a foreign government to prevent a world-threatening earthquake, and continuing with a foreign government destroying American submarines with new technologies in "The Fear Makers" and "The Enemies". The season also had several ocean peril stories in which the "Seaview" crew spent the episode dealing with the normal perils of the sea. Two examples are "Submarine Sunk Here" and "The Ghost of Moby Dick". The season introduced a diving bell and a mini-submarine, and the first episodes featuring extraterrestrials (Don Brinkley's "The Sky is Falling")