
The crew of the Seaview, the world's first privately owned nuclear submarine, explores oceans and seeks answers to the world's problems. They encounter espionage, environmental catastrophe, nuclear doomsday scenarios, and more than their share of undersea monsters.

Subliminal messages tell Crane and Nelson to kill each other.

The Seaview battles an enemy sub for control of an activated superbomb.

Mr. Pem plans to use his time device to alter the course of history.

The Seaview crew faces a battle with plant monsters created by a scientist who is telepathically controlled by his brother.