Factual error: Loosely based on the novel by Jules Verne, the entire story takes place on a remote Pacific island in the early 1860s. However, as pirates come under attack by a sea monster (in the second half of this two-part film), a modern fishing trawler or tugboat appears momentarily on the far right of the screen. (00:59:05)
Other mistake: Just after the pirates flee the island and the octopus attacks them: a white and green fishing boat can be seen in the top right corner.
