Revealing mistake: At the end of the movie when they reach the surface, you can see that the horizon is nothing but a big wall with the sky painted on it. You can see the water splashing up against the wall.
Deepstar Six (1989)
1 revealing mistake
Directed by: Sean S. Cunningham
Starring: Miguel Ferrer, Greg Evigan, Nancy Everhard, Taurean Blacque
Factual error: An animal that lives in the deep sea cannot live in the open air above the water.