The City Beneath the Sea - S1-E2
Continuity mistake: Seaview is on the ocean floor investigating the underwater city. Two inserted stock shots then show it up near the surface at periscope depth. In the next shot, though, it's back on the bottom again. (00:43:15)
Factual error: Crane clears an Air Force jet to land at the Antarctic ice station. But the station is located on a completely snow-covered sheet of ice with no runways. How and where could it possibly land? (00:27:30)
The City Beneath the Sea - S1-E2
Revealing mistake: When Seaview's crew recover the diver's body in the beginning and clear seaweed from his mask, the "dead" man is blinking. (00:01:20)
Deliberate mistake: The Seaview's 8 huge picture windows were a concession to design over practicality. Though they knew that such big windows could never withstand deep sea pressures, the producers wanted the characters - and the audience - to be able to see all the underwater wonders "up close." The "impossible" windows became one of the show's most popular features. (00:25:10)
Revealing mistake: Crane overcomes his guard in a fistfight by hitting him in the face three times. But if you watch closely, it's apparent that not one of his blows connects. He "strikes" the air above the man's head all three times. (00:32:00)
Factual error: The diving bell descends to 4000 feet, where no light can penetrate and the ocean around them should be pitch black. But some strange, unseen phenomenon is lighting up the bell quite nicely for the camera. (00:21:15)
Deliberate mistake: Several of the roaming dinosaur segments here are repeated 2-3 times over. They're all recycled footage from producer Irwin Allen's own 1960 remake of "The Lost World," and Allen must have wanted to get as much use out of the dino shots as possible. (00:28:00)
No Way Out - S1-E12
Factual error: Victor is crawling around through Seaview's incredibly roomy ventilation ducts, pursued by several crewmen. But the air conditioning that's fluttering little ribbons on all the vent covers isn't, for some reason, disturbing a hair on any of their heads. (00:44:25)
Revealing mistake: One of the saboteurs sneaking into the palace keeps looking up at someone off camera. He's not watching the door he just entered by, so who's he looking at in what should be an empty corner of the room? (00:00:30)
Deliberate mistake: The huge system and missile control boards containing the failsafe units suddenly appear on Seaview's bulkheads just for this episode. And of course, they disappear after this, never to be seen again. (00:15:00)
The City Beneath the Sea - S1-E2
Revealing mistake: On the beach, Molina is petite, thin and small-chested in her wetsuit. Underwater, she mysteriously gains several pounds, bigger muscles and a much larger bust, thanks to a poorly-matched stunt double. (00:12:00)
No Way Out - S1-E12
Continuity mistake: When Anna tries to kill Koslow, Victor spies on her from behind the ventilation grate. The ribbons fluttering on the duct cover disappear when the shot switches to Victor's point of view. (00:46:50)
The City Beneath the Sea - S1-E2
Continuity mistake: Seaview's windows form 8 horizontal rectangles in 2 rows across its bow. But the interior sets have windows that form vertical rectangles, and they're much closer together than they are in the exterior shots. (00:02:30)
Character mistake: The General picks up the comms microphone and starts wrongly speaking into the back of it. (00:01:00 - 00:01:55)
Visible crew/equipment: The Seaview is attacked by an enemy sub. During the torpedo assault, wires used to rock the Seaview model are visible just above the submarine's aft bow. (00:23:15)
Other mistake: Aside from the error of having mines so densely packed and so close to the bottom so deep, there is no possible way the Seaview could have settled to the bottom while passing through this minefield without being destroyed. (00:48:00)
Other mistake: One of the natives putting the captured Seaview personnel into the cave is wearing laced up sneakers. (00:36:25)
Continuity mistake: Captain Crane removes a failsafe key, which is hanging outside his uniform collar, from around his neck. It wasn't there in the previous shot. (00:10:30)
No Way Out - S1-E12
Continuity mistake: When Victor tries to get into sickbay, the guard stops him, pointing a rifle at his chest. But in the very next reverse angle shot, the rifle is again in its original position in the guard's hands, pointing at the ceiling. (00:35:10)
