Goofs: Revealing mistakes: Near the end of the picture, the alien "city" rises to the surface, carrying with it several sunken vessels. One of the ships, a freighter, is lying on its side with one of its propellers flexing and flopping from the wind (the ship, of course, is a model).
(more) Trivia: The tank was filled to a depth of 40 feet, but there was still too much light from the surface, so a giant tarpaulin and billions of tiny black plastic beads were floated on the surface to block the light. During a violent storm the tarpaulin was destroyed, thus shifting production to night time.
(more) Filming Locations: Harbor Star Stage, San Pedro, Los Angeles, California, USA
(more) Quotes: [
first lines]
USS Montana Captain: Sixty knots? No way, Barnes. The Reds don't have anything that fast.
(more) Awards: Won Oscar. Another 4 wins & 12 nominations
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