 The climactic squid battle on the Nautilus was originally shot with  a serene sunset and a calm sea. Director Richard Fleischer (qv)  was troubled by the look of it because the cams and gears that  operated the squid could easily be seen, making it look obviously  fake. Walt Disney (qv) visited the set one day and Fleischer told  him about the problem. Disney came up with the idea of having the  squid battle take place during a fierce storm (another story is that  it was actualy screenwriter Earl Felton (qv) who came up with the  idea). The scene was reshot that way and is considered by many to be  the highlight of the film.