Other mistake: When the Behemoth swims up the river & capsizes the ferry, a static model is used that bears no resemblance to the animation model seen throughout the film.
The Giant Behemoth (1959)
1 other mistake
Directed by: Douglas Hickox, Eugene Lourie
Starring: Andre Morell, Gene Evans, John Turner, Leigh Madison
Audio problem: When the hero asks the Coastguard to get him quickly back to London, it is followed by film of a single seat Hawker Sea Hawk jet fighter landing, which sounds just like a piston engined aircraft.