Chapter five: Only in this chapter that Diana wears a split skirt (as opposed to an ankle-length skirt) so she can ride a horse to escape back to the 'Sacred City'.
Chapter 1: Joe, the sub operator is several times called Bill.
When Billy is abducted, his hat is blown off, but it is back on his head in the very next shot.
Crash Corrigan and Billy refer to the Volkites and the Juggernaut by name before ever making contact with anyone from Atlantis.
Chapter one: Upon reaching Atlantis and ties up the sub to the shore, the group set out to explore. Seeing the soldiers approaching, the professor sinks the sub which is now in the middle of the inlet.
If this were truly a Undersea Kingdom there wouldn't be sunlight, clouds, trees and shrubs. No night and day. It would just be dark all the time.
Billy has light blond hair throughout the series, but in a scene
where he is thrown from a chariot, he is clearly being doubled by somebody whose hair is much darker.
Whenever they raise the sub, the bubbles go downward, into the sub, showing that they are reversing the footage of the sub sinking.
In Chapter: 7 and 11, when the sub comes up and goes back down, the hatch is shown open. Nobody is on the sub to open or close the hatch.
The battle at the fortress in Chapters: 4 and 5, is repeated in Chapter: 10, with a different outcome.
In Chapter: 10 when Crash says "They are bombing the temple..." his mouth does not move.
In Chapter: 11, Crash destroys the main controls that Ditmar (Boothe Howard) wears on his chest. In Chapter: 12, the controls are back on Ditmar and working fine, even though they been destroyed in the last Chapter.