A gigantic tidal wave will destroy much of the civilized world, but Admiral Harriman Nelson has a plan to stop it -- ...

While investigating the disappearance of research ships in the Aegean, the Seaview is damaged by a bomb. Captain Cran...

After Seaview's sister ship, Polidor, is lost on an experimental deep dive, Seaview continues with the tests. Unknown...

On a rendezvous mission, Crane and several crewmen are drugged into unconsciousness on a deserted yacht. Waking up in...

A husband and wife Antarctic research team is killed by an experiment on plankton gone wild. Seaview arrives to inves...

An alien spaceship lands in the ocean, and Seaview is sent to investigate. Although Seaview is powerless in the vicin...

A lush, tropical, verdant paradise in the South Pole? Living dinosaurs? Such fanciful ideas must surely be the raving...

A sea monster kills three villagers in a Norwegian fjord; however, one man survives. Seaview arrives to investigate. ...

A Soviet satellite has crashed into the sea and its nuclear reactor must be disarmed before it causes a disaster. Two...

Damaged by an explosion from an old mine field, Seaview takes a dive to the ocean floor. Listing dangerously, running...

A mysterious weapon is destroying American U2s. The Seaview's mission is to find the weapon and destroy it. Captain C...

Nelson and Crane go undercover and risk their lives in order to bring a Communist defector back to the United States....

In blizzard-wracked Florida, Nelson contacts a meteorologist who may be able to help explain the strange weather cond...

An old friend of Nelson's comes aboard Seaview to continue his research into the giant whale that destroyed his ship,...

When the King of a small but friendly nation is assassinated, Seaview is assigned to take the young Crown Prince back...

Injured in a fall, the President of the United States is in desperate need of surgery -- and the operation must be ke...

Admiral Nelson is kidnapped from a plane during mid-flight and held on a remote island by Nazis who plan to conquer t...

After Nelson's experimental submarine is attacked by a giant jellyfish, tension mounts aboard the Seaview as Nelson e...

When a mass missile launching by a foreign power sets the U.S. on nuclear alert, the Seaview goes into a fail-safe ma...

An undersea earthquake exhumes hundreds of strange metallic capsules, and a powerful humanoid creature who could dest...

After returning from a mission on deep space, a lifelike robot is brought aboard the Seaview, but the crew soon disco...

A mad art connoisseur seizes control of the Seaview and plans to pirate Leonardo da Vinci's Mona Lisa from a French S...

A newly installed super-computer is tested on the Seaview...but the enemy has other plans.

Crane is brainwashed by enemy agents, and his new mission is to deactivate certain strategic undersea missiles and to...

A strange experiment to speed up evolution goes horribly awry, and an enormous protoplasm monster threatens the lives...

The cre of the Seaview is called to investigate an undersea laboratory where scientists are surgically transforming h...

Nelson is stranded aboard a life raft with the ex-premier of a hostile foreign power who carries vital information on...

The crew is joined by Captain Adams, the sole survivor of an ill-fated missile launch, in search of the mysterious fo...

Nelson and Crane hear about the destruction of the submarine Angler. When they read the captain's log and hear the ta...

The Seaview travels to Scotland via a secret, underground conduit to investigate the mystery of the legendary Loch Ne...

Nelson and Crane are dismayed when an egotistical, publicity-seeking scientist is given command of the Seaview to tes...

Nelson's sister is abducted by enemy agents who demand top-secret information as ransom, but will Nelson betray his c...