The Seaview is an atomic submarine designed by Admiral Harriman Nelson. On its initial launch some p...

Season 4 Volume 1 of the DVDs features a color version of this episode which whilst filmed in colour...

A gigantic tidal wave will destroy much of the civilized world, but Admiral Harriman Nelson has a pl...

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

After Seaview's sister ship, Polidor, is lost on an experimental deep dive, Seaview continues with t...

On a rendezvous mission, Crane and several crewmen are drugged into unconsciousness on a deserted ya...

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

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

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

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

A Soviet satellite has crashed into the sea and its nuclear reactor must be disarmed before it cause...

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

A mysterious weapon is destroying American U2s. The Seaview's mission is to find the weapon and dest...

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

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

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

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

Injured in a fall, the President of the United States is in desperate need of surgery -- and the ope...

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

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

When a mass missile launching by a foreign power sets the U.S. on nuclear alert, the Seaview goes in...

An undersea earthquake exhumes hundreds of strange metallic capsules, and a powerful humanoid creatu...

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

A mad art connoisseur seizes control of the Seaview and plans to pirate Leonardo da Vinci's Mona Lis...

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 underse...

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

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

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

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

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

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

Nelson and Crane are dismayed when an egotistical, publicity-seeking scientist is given command of t...

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

The Seaview is on a joint mission with Russian scientists to salvage the remains of a Soviet underse...

Nelson is injected with a radioactive material that makes him a walking time bomb. This episode mar...

Seaview comes to the rescue of newly discovered WWII survivors living in an underwater cave beneath...

Cybernetic genius Tabor Ulrich creates a perfect mechanical duplicte of Admiral Nelson. His plot: to...

Crane is caught up with a circle of spies as he tries to make his way back to Seaview with important...

Nelson works on finding an assassin before he can kill the new Secretary of State.

While inspecting undersea bomb shelters with the President, aides attempt a power grab.

Nelson and crew are invited to a marine scientist's undersea lab for a visit but there is giant sea...

Defecting scientists create a proton bomb, but are killed by a foriegn power and the bomb is capture...

Asian powers attempt to interfere with the American Space Program.

A toy manufacturer is involved with kidnapping and shipping politicians and scientists to foreign po...

A missile defense platform-drone malfunctions and threatens to destroy the East Coast of the US.

A space probe returns to earth and is recovered by Seaview...only to unleash an alien organism aboar...

A submerged domed island is forced to the surface by its volcano and exposes a Jurassic-style world.

A foreign power is salvaging sunken nuke missiles from the ocean floor to make themselves a superpow...

Seaview rescues two men adrift at sea, only to discover they are escaped prisoners intent on not ret...

Seaview encounters a sunken WWI sub...with someone still left aboard.

Cruising for days under the ice, Seaview surfaces to find the sky is ablaze thanks to the Van Allen...

A scientist and his secretary come aboard Seaview when their research vessel is sunk by a giant Port...

Dr. Alex Holden is hunting a gigantic whale in which he has injected an experimental growth serum. I...

A 16th century pirate seemingly comes back from the grave to threaten Seaview.

Things go wrong when Nelson and Crane test out a new automated system for Seaview.

Captain Gantt, an ego-maniacal scientist, is in a nuclear sub testing a powerful new fuel. Due to hi...

With Admiral Nelson away, his old friend Admiral Park takes over Seaview's current mission. Dr. Borg...

Drs. Paul Ward and Peter Omir have discovered a powerful new element -- Subterranium 116. This eleme...

Captain Krueger returns to compel Nelson to shoot Crane. Once that is done, Krueger takes over Crane...

Seaview is investigating a thousand-mile wide communication blackout. The source of this is a large...

Two scientists examining a radioactive volcano are attacked by a wolf. One dies, and the survivor is...

As Admiral Nelson demonstrates a new tracking device for a visiting U.S. senator, it seems to show t...

Captain Crane searches for a lost diving bell containing Admiral Nelson, Chief Sharkey, and Dr. Spra...

Seaview is investigating a UFO. Along the way, they pick up a shipwrecked old man -- almost always a...

A UFO crashes and an alien assumes the form of Admiral Nelson.

Captain Crane rescues a diver from a wrecked atomic sub. He turns out to be Kowalski's brother, Stan...

Bainbridge Wells is filming a segment of his "Science On The Move" television series on a small isla...

Admiral Nelson and Captain Crane are involved in a mind-control experiment, with Chief Sharkey caugh...

Faceless aliens invade Earth and try to take over an underwater atomic base. The leader takes the fo...

A ghostly ancestor of Admiral Nelson visits him aboard Seaview.

Twin scientists - one good, one evil - come aboard Seaview. The evil twin is out to create a radioac...

Seaview and an enemy sub battle to recover a superbomb from the ocean floor.

While racing to help a foundering research vessel, the Seaview's nuclear reactor goes critical. Admi...

The Seaview is called in to help track an artificially created life form, now loose in the Pacific....

As World War II draws to a close, a secret underwater Nazi base is damaged during a sea battle. A N...

Arctic Listening Station XZ-5 receives a message from a voice from space (""laser beeeeeam""). Profe...

The crew of a lost submarine returns as rock men to menace the Seaview. A new man, Kowalski's friend...

As the Seaview conducts a marine census, Captain Crane spots a mermaid. He brings her aboard and fal...

The Seaview is on a top secret mission to transport a 3,000 year old sarcophagus from New York to a...

The Seaview takes on a skeleton crew and is being used to guide a new interstellar space probe. Howe...

While searching the deep for an enemy complex, the Seaview is rammed by another sub. The crew rushes...

While Nelson and Sharkey search by air for an uncharted island, Seaview brings aboard a gigantic egg...

The Seaview is carrying Atlantanean statues in its missile room as a favor for the State Department....

A mysterious cloud is enveloping the Earth and causing massive Tsunami and other catastrophic enviro...

Admiral Nelson has been brainwashed. After getting a vital energy source, he attempts to kill Crane...

The Seaview is being buffeted about by underwater explosions due to the eruption of an active volcan...

The Seaview crew is being entertained by puppet cairactures of the Captain and Admiral, compliments...

"Those who see the Flying Dutchman never, never reach the shore." Investigating the loss of Navy shi...

Aliens snatch a manned space probe launched from Seaview with Chip Morton aboard, and transport it a...

"There's nothing to do here but to keep from disappearing." Lt. Commander Morton Seaview is carrying...

In an attempt to control the planet's tides, Dr. Randolph Mason (a nut if ever there was one -- he i...

Doctor Blanchard has created a device to control the actions of a white gorilla. Unfortunately, his...

A man from the future sends two androids back in time to kidnap Nelson from Seaview in order to add...

Seaview is on the lookout for an enemy sub and its underwater sub-pen. Sonar picks up a contact. The...

A scientist experimenting with plant life on a remote island has run into trouble. A shore party fro...

finds herself suddenly out of touch with the rest of the world, in the wrong part of the ocean and e...

The Seaview is en route to rendezvous with the fleet when Sharkey reports a missle fuel leak. Crane...

Seaview has been sent to the ocean floor by mysterious pressure impacts. Crane, Sharkey, and Kowalsk...

The ghost of Blackbeard is alive and well, and he wants the Seaview and her crew. The pirate 'drafts...

About the plot . . . Um . . . Well . . . Uh . . . Okay, here it is: You see, there are these twin le...

A lobster-like alien emerges from a capsule retrieved from the ocean floor. He claims that all he wa...

Poor Captain Crane. The things he had to go through. This time, he's in the Flying Sub, when he rece...

"But that's not the goal of a man -- of a scientist!" Admiral Nelson At an experimental station in t...

Naval ships have been disappearing, and Seaview is on a hunt for the undersea installation responsib...

"You had no right -- no right to make that second dive without orders from me!" Nelson to Crane Anot...

Alien jungle growth is spreading across Italy, and before long -- thanks to a crewman who is really...

Seaview is under polar ice, trying to discover the cause of increased flooding around the world. Nel...

Aliens are at it again. They're planning to destroy the Earth. However, one of the aliens claims to...

"Idiots!!!" Admiral Nelson to himself. There is an imposter on Seaview. Lee Crane is the main suspec...

"... but the Flying Sub's my baby!" Captain Crane to Chief Sharkey Seaview's reactor is running wild...

Seaview experiences a sudden power overload and blows up, killing all hands aboard. When Admiral Nel...