The WORST episodes of Voyage to the Bottom of the Sea

Every episode of Voyage to the Bottom of the Sea ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Voyage to the Bottom of the Sea!

Join the crew of the Seaview aboard their super high-tech submarine, where no mission is too dangerous and no threat is too deadly, be it enemy agents, mad scientists, deadly sea creatures, or impending nuclear disaster.

Last Updated: 8/1/2026Network: FOXStatus: Ended
No Way Back
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#1 - No Way Back

Season 4 - Episode 26 - Aired 3/31/1968

Seaview experiences a sudden power overload and blows up, killing all hands aboard. When Admiral Nelson (who was at the Nelson Institute at the time of the accident) hears of the destruction of the Seaview, he gets an impossible to refuse offer from Mr. Pem (who survived from A Time To Die): in exchange for the use of the sub's nuclear reactor, Pem will transport Nelson back in time to before the explosion which destroyed Seaview. Once back in time, Pem renergizes his time travel device and brings the sub back even further in time to the American Civil War. Before the crew has time to absorb this, the ship is boarded by Major General Benedict Arnold! Now Nelson has to stop Pem's far-reaching plan to take over the world and avoid the explosive disentergration of Seaview.

Directors: Robert Sparr
The Price of Doom
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#2 - The Price of Doom

Season 1 - Episode 5 - Aired 10/12/1964

A husband and wife Antarctic research team is killed by an experiment on plankton gone wild. Seaview arrives to investigate and take plankton samples. Soon the submarine is in danger of succumbing to the horrible, slimy growth. Nelson, Crane and crew face another problem: one of the three scientists on board the sub is an enemy agent.

Directors: James Goldstone
The Magnus Beam
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#3 - The Magnus Beam

Season 1 - Episode 11 - Aired 11/23/1964

A mysterious weapon is destroying American U2s. The Seaview's mission is to find the weapon and destroy it. Captain Crane goes undercover. A night-club performer, who is also a resistance fighter, comes to Crane's aid. The Captain is soon captured and severely beaten. Meanwhile, on Seaview, Major Amadi demands asylum. To prove his sincere intentions, he promises to lead the sub to the powerful magnetic weapon responsible for taking out those U2s. Nelson suspects he wants to lead Seaview to a watery grave.

Directors: Leonard J. Horn
Writer: Alan Caillou
The Blizzard Makers
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#4 - The Blizzard Makers

Season 1 - Episode 13 - Aired 12/7/1964

In blizzard-wracked Florida, Nelson contacts a meteorologist who may be able to help explain the strange weather conditions. That night, however, the scientist is abducted, and "programmed" to kill Nelson. When his first attempt fails, he comes aboard Seaview when she sails to investigate the source of the problem, and continues his efforts.

The Ghost of Moby Dick
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#5 - The Ghost of Moby Dick

Season 1 - Episode 14 - Aired 12/14/1964

An old friend of Nelson's comes aboard Seaview to continue his research into the giant whale that destroyed his ship, crippling him and killing his son. His real motives, however, have more to do with vengeance than science, and Crane becomes concerned that the Admiral is caught up in his friend's obsession.

Directors: Sobey Martin
The Last Battle
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#6 - The Last Battle

Season 1 - Episode 17 - Aired 1/4/1965

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

The Invaders
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#7 - The Invaders

Season 1 - Episode 20 - Aired 1/25/1965

An undersea earthquake exhumes hundreds of strange metallic capsules, and a powerful humanoid creature who could destroy mankind is restored to life after millions of years in suspended animation.

The Saboteur
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#8 - The Saboteur

Season 1 - Episode 24 - Aired 2/22/1965

Crane is brainwashed by enemy agents, and his new mission is to deactivate certain strategic undersea missiles and to assassinate Admiral Nelson!

The Exile
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#9 - The Exile

Season 1 - Episode 27 - Aired 3/15/1965

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

The Enemies
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#10 - The Enemies

Season 1 - Episode 29 - Aired 3/29/1965

Nelson and Crane hear about the destruction of the submarine Angler. When they read the captain's log and hear the tapes made in the control room, Nelson and Crane are puzzled: Captain Williams wen insane and machine-gunned officer Richardson, yet both men were close friends. It seems that after they had left a mysterious island, the men became deadly enemies.

Directors: Felix Fiest
The Secret of the Loch
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#11 - The Secret of the Loch

Season 1 - Episode 30 - Aired 4/5/1965

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

The Condemned
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#12 - The Condemned

Season 1 - Episode 31 - Aired 4/12/1965

Nelson and Crane are dismayed when an egotistical, publicity-seeking scientist is given command of the Seaview to test a new pressure system which will allow the sub to explore uncharted depths.

The Traitor
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#13 - The Traitor

Season 1 - Episode 32 - Aired 4/19/1965

Nelson's sister is abducted by enemy agents who demand top-secret information as ransom, but will Nelson betray his country to protect the only family he has?

The Shape of Doom
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#14 - The Shape of Doom

Season 2 - Episode 20 - Aired 2/6/1966

Dr. Alex Holden is hunting a gigantic whale in which he has injected an experimental growth serum. It turns on the doctor and destroys his boat, killing his crew. He is rescued by Seaview, which was on route to plant a nuclear device to blast an undersea channel. Dr. Holden obsesses over getting his swallowed equipment from the whale when it turns and comes at the sub, swallowing the bomb as it is being lowered! Nelson cannot detonate the bomb, as the president's carrier is in the area. The nearly insane Dr.Holden steals Nelson's remote detonating device and threatens to blow up the whale if he's not permitted to get samples of the whale.

Directors: Nathan Juran
The Death Ship
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#15 - The Death Ship

Season 2 - Episode 22 - Aired 2/20/1966

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

The Menfish
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#16 - The Menfish

Season 2 - Episode 24 - Aired 3/6/1966

With Admiral Nelson away, his old friend Admiral Park takes over Seaview's current mission. Dr. Borgman is conducting experiments, and Park suspects he is up to no good.

The Monster's Web
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#17 - The Monster's Web

Season 2 - Episode 23 - Aired 2/27/1966

Captain Gantt, an ego-maniacal scientist, is in a nuclear sub testing a powerful new fuel. Due to his bungling, the sub crashes into a giant web and is attacked by a monstrous sea spider. The Seaview investigates and rushes to retrieve the remaining fuel canisters before the enormous underwater pressure collapses the test sub and detonates the fuel - an explosion which would kill millions!

The Death Clock
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#18 - The Death Clock

Season 4 - Episode 25 - Aired 3/24/1968

"... but the Flying Sub's my baby!" Captain Crane to Chief Sharkey Seaview's reactor is running wild -- again. Without taking the time to don protective anti-radiation gear, Captain Crane runs into the Reactor Room to shut down the pile. An explosion renders him unconscious. Although treated in Sickbay with a special anti-radiation device, the Captain does not come out of his coma-like state. Doc can find no explanation. (Apparently, Doc hasn't read the script.) Corpsman Mallory has turned that life-saving device into a time-machine. Mallory is testing his fourth-dimension gadget on Crane before using it to enslave the entire world! A warped and insane Captain Crane from the future shoots and kills Admiral Nelson, because he believes the Admiral has held him back from achieving all he should have. Maybe he's paying Nelson back for the Krueger incident.

Directors: Charles Rondeau
Edge of Doom
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#19 - Edge of Doom

Season 4 - Episode 24 - Aired 3/17/1968

"Idiots!!!" Admiral Nelson to himself. There is an imposter on Seaview. Lee Crane is the main suspect. Admiral Nelson takes Morton and Sharkey into his confidence. They must put Crane to the test to find out whether or not he's the man they know. Captain Crane is really put through the ringer in this episode! Admiral Nelson hurts his feelings on purpose, the Captain practically chokes to death from a fire in the Circuitry Room that he gets blamed for, he gets locked in a storage room, and he's driven half out of his mind by the Admiral, Morton and Sharkey. Through it all, Crane maintains his inner belief in himself. But he must have needed a vacation after this mission was over!

Directors: Justus Addiss
Man-Beast
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#20 - Man-Beast

Season 4 - Episode 20 - Aired 2/18/1968

"You had no right -- no right to make that second dive without orders from me!" Nelson to Crane Another scientist with another artificial atmosphere (see Season 1's "The Condemned") that will revolutionize deep-sea diving. When will Admiral Nelson learn! Naturally, Captain Crane is used as a guinea pig for these dangerous experiments. And there are fatal side-effects. * A great Nelson/Crane argument takes place in the Admiral's cabin after the Captain has made his unauthorized second dive. * In this episode it is not Nelson who shoots Crane, but rather, Chip Morton. * Notice the tears of gratitude and relief in Crane's eyes after Nelson gives him the antidote at the very end of the episode. * Crane also shed a tear (from pain) in Season 3's "Day of Evil". Years later, David Hedison would appear in a Fantasy Island episode entitled: "Man-Beast"!

Directors: Jerry Hopper
Terrible Leprechaun
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#21 - Terrible Leprechaun

Season 4 - Episode 15 - Aired 1/7/1968

About the plot . . . Um . . . Well . . . Uh . . . Okay, here it is: You see, there are these twin leprechauns, one good, the other icky. The icky one wants all the gold that's buried beneath an underwater defense installation in the Irish Sea. The good leprechaun does his best to stop his evil brother from doing any harm . * Footage of Morton and Kowalski trapped in an underwater cave was borrowed from previous episodes. So what else is new? * Why this episode wasn't broadcast on St. Patrick's day, we'll never know!

Directors: Jerry Hopper
Blow Up
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#22 - Blow Up

Season 4 - Episode 12 - Aired 12/10/1967

The Seaview is en route to rendezvous with the fleet when Sharkey reports a missle fuel leak. Crane and Morton believe it's worth returing to port to repair, however Nelson knows how to handle it. Taking a small breathing device with him, the Admiral locks himself in the compartment in question to effect repairs. However, he drops a wrench, the circuts blow and Nelson is knocked out. When he comes to, he's gripped by paranoia which worsens with each passing minute. Trusting no one, Nelson loses his grip on reality, arresting Doc, fighting with Sharkey and finally launching a nuclear missle at the fleet!

Directors: Justus Addiss
A Time to Die
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#23 - A Time to Die

Season 4 - Episode 11 - Aired 12/3/1967

While on a mission, the Seaview appears to pass through an odd magnetic field. However, a dinosaur and alterations in the star patterns indicate that they have been thrown back in time one million years. Nelson encounters the mysterious Mr. Pem, a man who has learned how to control time, and wants to use the Seaview as a powerful source of energy for his time device. Nelson must try to outwit a man who can simply back up time and alter anything they attempt to do.

Directors: Robert Sparr
Time Lock
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#24 - Time Lock

Season 4 - Episode 8 - Aired 11/12/1967

A man from the future sends two androids back in time to kidnap Nelson from Seaview in order to add him to a collection of other famous military figures abducted from various eras of the past. The plot of this episode is virtually identical to the plot of the ""Time Tunnel"" episode entitled ""The Kidnappers"".

Directors: Jerry Hoppe
Destroy Seaview!
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#25 - Destroy Seaview!

Season 3 - Episode 26 - Aired 3/19/1967

Admiral Nelson has been brainwashed. After getting a vital energy source, he attempts to kill Crane and the visiting Dr. Land in an undersea cave. He then returns to the sub, gasses the crew and sets the reactor to blow. Can Crane recover and return to the Seaview before Nelson can destroy it?

Directors: Justis Addiss