Voyage to the Bottom of the SeaVoyage to the Bottom of the Sea

Voyage to the bottom of the sea: A routine scientific expedition to the North Pole turns into a race to save all mankind when a radiation belt in space causes a fiery inferno on Earth. The crew of atomic submarine Seaview battle saboteurs, giant-sea creatures, and enemy submarines.
Fantastic voyage: An elite team of medical and scientific specialists race to save a top government scientist who is suffering from a blood clot on the brain. Their mission is to be reduced, along with their craft, to microscope size, and to enter the bloodstream to save him.