A 1961 science ficton film directed and produced by Irwin Allen.Earth's Van Allen radiation belts have caught on fire, causing the global temperature to rise day by day, which threatens to end all life in three weeks. Admiral Nelson (Walter Pidgeon), who has constructed an experimental nuclear submarine called Seaview, sets out on a mission to restore he planet to its normal state.The film became the basis for a television series.
This film has examples of:
- Berserk Button: Crane explodes when he encounters Alvarez giving a sermon on the Seaview's mess room about how all efforts will ultimately be worthless and all that is best to do for the crew is to make their peace with God. As he puts it, what the crew needs least of right now is to have some doom-sayer on board bringing their spirits down.
- Communications Officer: Sparks. He is the first to get very distressed when the increment in atmospheric radiation makes it impossible to contact anybody.
- Deus Ex Nukina: To stop the world from turning into a dried husk, a nuclear missile must be fired to the Van Allen radiation belts from the Marianas.
- The Fundamentalist: Alvarez believes that it's God's will that Earth should burn up, and is one of the two saboteurs onboard Seaview.
- Giant Squid: A gigantic octopus attacks the Seaview as it is nearing its goal, and is driven away by electricity. Earlier in the film, an actual giant squid attacks the divers repairing the transatlantic phone line on the ocean bottom.
- Global Warming: When the skies start to burn, the ice caps melt while Seaview is in the Arctic Ocean, leaving chunks of ice to rain down on it (which ignores the fact that ice floats).
- Ignored Expert: Nelson, who proposes pulling the Deus Ex Nukina (and insists that there is no time to argue), but is undermined by UN Emergency Scientific Meeting head delegate (and scientist) Emilio Zucco, who believes the "sky fire" will burn itself out. Nelson, thus, has to perform the expedition with everybody else thinking he's insane.
- Insufferable Genius: Admiral Nelson. It is this, and various decisions that (in Crane's eyes) make him look like The Neidermeyer, that make the Captain a Commander Contrarian. The Seaview is even mentioned early in the film to have been nick-named "Nelson's Folly" by the news.
- Number Two: Captain Crane, with some degree of Commander Contrarian to Admiral Nelson. For most of the film, he actually hopes that Zucco's theory is the correct one and Nelson is wrong.
- Sea Mine: The submarine almost plows headfirst into a mass of underwater mines, and a tense sequence starts when they have to send in a minisub to remove one they got tangled with.
- Set the World on Fire: Earth's Van Allen belts are on fire and if nothing is done about them, they will slowly roast the planet.
- Threatening Shark: Seaview has a pool inside it, where Lucius keeps a shark for his studies. Late in the film, Dr. Hiller, one of the two saboteurs onboard, falls into it after a brief struggle with Capt. Crane and gets eaten.
- Title Theme Tune: Sung by Frankie Avalon, who also plays Lt. Romano.