The Sea Serpent on AllMovie

This fantasy-adventure is geared to the younger set. The saga begins when an American military plane is forced to explode an atomic bomb in the ocean, which brings up an ancient sea monster from his deep hibernation. When poor Capt. Barrios (Timothy Bottoms) is taking the watch on his ship, the monster surfaces and scuttles the vessel. A fellow sailor, mad as a hornet, accuses the Captain of being drunk and Barrios is stripped of his rank and threatened with a criminal trial. Anxious to prove he was right about the sea monster, the much-maligned Capt. Barrios sets out to locate a woman who has seen the beast, and to contact an expert who might be able to help.