Episode Guide

In the two-hour series premiere, designer Nathan Bridger is lured out of self-imposed island exile to reclaim command of seaQuest, the submarine he built and...

Darwin falls gravely ill after seaQuest investigates a deep-sea phenomenon, and Bridger is forced to weigh his friend's freedom against his survival.

The discovery of a submerged ancient library sets rival nations competing for access, and Bridger finds himself mediating a dispute over who owns the past.

A dangerous prisoner being transported aboard seaQuest escapes custody, taunting the crew with the claim that a lethal toxin is slowly thawing somewhere on the...

Krieg surfaces a haul of mysterious glowing stones from the trench, along with an encounter he can't explain, and the crew has to work out where opportunity...

seaQuest is tasked with evacuating a group of children from an abandoned munitions depot, in an operation with very little margin for error.

A virus of orbital origin spreads through the crew while a rival submarine works to conceal where the pathogen actually came from.

Investigating a mysterious signal, seaQuest discovers the wreck of the George, a luxury liner lost in 1913. When an away team boards the intact hulk, crew...

A hurricane strands Ford and a shore party on the surface while a damaged seaQuest searches for a missing submarine with children aboard.

With the boat's environmental systems failing, Krieg turns to a black-market trader for the part nobody official can supply.

Colonists at Broken Ridge call for help getting out from under a situation they can no longer control, and seaQuest answers.

Lucas visits a communications colony run by hackers and is drawn into a scheme with consequences reaching well beyond the colony's walls.

An old friend of Bridger's returns from Mars, and the recovery operation is complicated by a general with his own designs on the returning astronauts.

Environmental extremists seize seaQuest while most of the crew is off the boat for an experiment, leaving a skeleton complement to retake her.

Treasure hunters chase a magma buoy launched months earlier, convinced the UEO's interest in their island means there is a fortune under it.

An activist begins sinking whaling vessels, and Bridger, ordered to stop him by force, resigns rather than carry out the order.

Lucas and Hitchcock end up in competition designing a one-man submersible, and the test programme goes wrong when a rival developer takes an interest.

A dictator seeking dolphins for military training takes Dr. Westphalen, and buys himself passage aboard seaQuest in the process.

Lucas accompanies the UEO Secretary General to a conference that turns into a hostage situation with the confederation's leadership inside it.

Shore leave brings Ford into the orbit of a woman who seems more myth than person, and into a scientist's experiment that should never have been run.

The crew finds a starship entombed in the seabed for more than a million years, and goes inside.

seaQuest torpedoes a refugee ship by mistake, one carrying Kristin's daughter, and the crew is driven into exile by the consequences.

The season closes with a crack opening in the seabed beneath a power plant, threatening to cook the ocean above it unless somebody pays for stopping it.

The season two premiere refits the boat and the roster. As seaQuest relaunches with new crew members, including Ensign Lonnie Henderson and genetically...

First contact arrives through Darwin, and the military reads as a threat what the crew is trying to understand as a conversation.

A parapsychology experiment drives an entire colony toward madness, including a woman Bridger once knew well.

Shore leave, and the crew's tangled personal lives get more attention than the boat does, Bridger and Dr. Smith included.

An anomaly throws seaQuest 225 years forward, into a world where the human population has come down to two teenagers.

An experimental submarine running a computerised copy of Bridger's personality slips its leash and begins attacking UEO installations.

A flower brought aboard from a horticultural colony turns out to be considerably less benign than it looks.

Brody's mother is revived after twenty-two years in cryogenic storage, and someone wants her dead before she can talk.

Dagwood is convicted of murdering the man who made him. Ford and Brody set out to give him something like an ordinary life before the sentence takes it.

Trapped underground with not enough air for everyone, Lucas and the others are reduced to drawing lots.

An undersea mining operation frees something prehistoric, and the people it threatens include Ford's family.

Ford recovers a gold helmet that appears to prove Atlantis was real. Wearing it puts Bridger and Ortiz under something considerably older than they are.

Lucas falls hard enough to hand in his resignation, and finds he has been walked into a scheme aimed at seaQuest and the UEO.

A disintegrating comet cocoons the boat in particles and leaves something predatory inside with the crew.

An entity calling itself the Avatar puts officials into comas, and Dr. Smith goes to meet it on its own ground.

Lucas and O'Neill uncover an ancient pyramid, while a rock star starts speaking dead languages and announcing what is coming.

An ancient chest brought aboard for study lets something out among the crew.

A legendary hacker turns Mariah loose on seaQuest, and O'Neill ends up the one in her hands.

Piccolo and Dagwood start sharing the same nightmare, planted by someone who wants what is inside the boat.

Piccolo is taken by a dictator manufacturing cloaked artificial lifeforms, whose creations are beginning to fail.

An alien starship carries seaQuest billions of light years to Hyperion, a world in the middle of its own civil war, and the season ends with the boat a very...

Ten years after vanishing without a trace, seaQuest is found: in a cornfield in Iowa, her crew unaged. Waking to the year 2032, they find a world on the brink:...

Hudson takes on a scheme to sell an iceberg to Saudi Arabia, and runs into Ben Krieg on the way.

UEO haulers are disappearing, the investigation puts Hudson back in front of a woman he used to love, and Dagwood starts wondering whether he belongs on the...

Lucas is aboard for the maiden run of an undersea train, and has to stop it once sabotage kills the engineer.

Hudson is sent to relieve his own former commanding officer, who has seized a military base and intends to start a nuclear war with it.

A psyche-implant makes a UEO lieutenant into someone else's weapon, aimed at the Secretary General.

A rescue mission ends with Henderson captured and sentenced to death, and Hudson mounting an operation with very poor odds.

A virus out of the original seaQuest resurfaces, and Bridger argues for letting it run its course rather than intervening.

An environmental radical fakes his own death and plans to use seaQuest's lasers to set off nuclear weapons on the seabed.

Bridger, Lucas, Ford and Dagwood go back into a former base after data crystals documenting crimes against humanity.

A reactor imbalance opens a sphere of displaced time and drops seaQuest into October 1962, on the far side of a nuclear war.

Henderson finds a man she once loved in a cell, and breaking him out ends with a science outpost in the wrong hands.

In the series finale, a defecting Macronesian officer asks for asylum, and seaQuest is drawn into a plot involving conscripted prisoners forced to crew...