Goofs

Margiana's costume changes after Sinbad rescues her from the one-eyed centaur.

When the figurehead falls backward off the boat, it is holding an iron harpoon. The harpoon disappears when the figurehead hits the water, then re-appears when the figurehead is at the bottom of the ocean.

The tips on the swords that the animated Kali holds in the film are different from the tips on the swords used in the film's close-up shots.

Standing beside Sinbad wearing the "crown of untold riches", the reflection of Margiana in the water steps up beside the reflection of Sinbad a few seconds before Margiana actually steps up next to Sinbad.

In the opening scenes of the film, when Sinbad collects the amulet once the homunculus has dropped it, the amulet moves from Sinbad's hands to his feet, then back to his hands between shots.

When Kali finishes dancing, an extra in the foreground moves his head forward, and the patch of ground Kali is standing on overlaps it.

Koura says "Dance for me!" and Kali begins her dance. At that moment the temple behind Kali shifts position slightly, but Kali's position relative to the screen and the live actors in foreground does not change. This reveals that the shot was composited from three elements: the temple background, the foreground actors who are separate from the background, and Harryhausen's animated six-armed metal goddess.

At 39:37 into the film, in a close-up shot of the move to grab Rachid, a blue shirt sleeve is visible under the illusion's wooden skin.

If it takes the three pieces of the amulet being reunited for one to receive "youth, a shield of darkness and a crown of untold riches" it seems strange that Koura would try and seal Sinbad and his men in the Temple of the Oracle of All Knowledge when they still hold two of the pieces.

The heroes reach the shore of the island in a longboat that seems to have appeared from nowhere. How this longboat was carried hidden from view aboard Sinbad's fairly small ship - or how and where the sailors found it - is never explained.