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Season guide

Sea Hunt: Season 3

39 episodes Premiered Jan 9, 1960 Updated Sep 28, 2026
Previously on Sea Hunt

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Sea Hunt Season 2.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

8%
92%
Mytharc (3): Crucial lore & season climaxes
Core (36): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Asylum

Jan 9, 1960

Working for the State Department, Mike attempts to rescue a political prisoner in South America by using a harbor city's canal system.

S3·E2 Core

Water Nymphs

Jan 16, 1960

A swimsuit designer hires Mike to do an underwater fashion shoot, but corporate espionage interferes with the job.

S3·E3 Core

Mister Big

Jan 23, 1960

Mike attempts to deal a blow to organized crime by using a periscope camera to photograph a secret meeting of mob bosses at a lakeside estate.

S3·E4 Core

Hot Cargo

Jan 30, 1960

Mike finds high radiation coming from the hull of a foreign freighter, but when the Coast Guard investigates, they find no trace of the radioactivity.

S3·E5 Core

Underwater Drop

Feb 6, 1960

An accidental death puts Mike onto an espionage ring that is using an underwater cave for a microfilm drop site.

S3·E6 Core

Cobalt Bomb

Feb 13, 1960

Mike and a female health official try to remove a dangerously radioactive capsule from a sunken ship.

S3·E7 Core

Counterfeit

Feb 20, 1960

Mike, working with a pretty Secret Service agent, poses as a scientist in order to retrieve a cache of counterfeit currency from a crashed Nazi plane off the coast of a Caribbean r

S3·E8 Core

Missile Watch

Feb 27, 1960

Mike finds that someone has tapped the underwater cable used in monitoring a televised missile test.

S3·E9 Core

Jade Cavern

Mar 5, 1960

Mike rescues a diver in the Bahamas, then helps her with her research into the origin of a jade statue she owns.

S3·E10 Core

Expatriate's Return

Mar 12, 1960

While on patrol with the Coast Guard Auxiliary, Mike discovers a deported crime boss trying to re-enter the country, then has to rescue him from some old enemies.

S3·E11 Core

Strong Box

Mar 19, 1960

Mike leads the way in a salvage operation to recover more than a million dollars' worth of gems from the captain's safe of a sunken ship.

S3·E12 Core

The Fearmakers

Mar 26, 1960

In preparation for the visit of a foreign head of state, Mike helps the Coast Guard do a security check on the area.

S3·E13 Core

Revolutionary Spoils

Apr 2, 1960

A new revolutionary leader asks Mike to help him retrieve his country's hidden gold reserves, believed to have been hidden aboard a scuttled freighter by the ousted former dictator

S3·E14 Core

Pirate Gold

Apr 9, 1960

While marking underwater sites for demolition by a construction company, Mike learns that a young boy is trapped in a submerged grotto that has already been mined with an explosive

S3·E15 Core

The Living Fossil

Apr 16, 1960

While supervising an expedition in the Indian Ocean to find a rare coelacanth fish, Mike finds that the organizer is dangerously eager to impress his fiance.

S3·E16 Core

Submarine Explosion

Apr 23, 1960

Scientists risk triggering a tidal wave when they ignore Mike's warnings about the strength of the explosive charges they're using.

S3·E17 Core

Sacred Pool

Apr 30, 1960

Mike faces arrows and an alligator in the Mayan jungle while searching for a drug that could be a boon to medicine or a dangerous narcotic.

S3·E18 Core

Cindy

May 7, 1960

Mike tries to reach a little girl trapped in the air shaft of a mine located at the edge of a man-made lake, but the potential for a landslide hampers his attempt.

S3·E19 Core

Cross Current

May 14, 1960

Mike searches for a vanished oceanographer by retracing her charted course.

S3·E20 Core

Synthetic Hero

May 21, 1960

Mike discovers the wreck of a navy ship that disappeared mysteriously, and is joined by a pair of its former crew members when he dives to examine it.

S3·E21 Core

The Cellini Vase

May 28, 1960

Mike becomes suspicious when his hired dive on a Spanish galleon yields a rare art treasure.

S3·E22 Core

Target

Jun 4, 1960

While diving in Lake Ontario, Mike is sent by the Coast Guard to investigate an item that crashed into the lake nearby, which may be an enemy ICBM.

S3·E23 Core

Ghost Light

Jun 11, 1960

An East Indian oceanographer vanishes during a series of underwater experiments with infra-red light.

S3·E24 Core

Rebreather

Jun 18, 1960

Mike and an old war buddy use a new, untested ""re-breather"" to investigate an underwater missile site being constructed in the channel of a privately-owned island.

S3·E25 Core

Blind Spot

Jun 25, 1960

Mike helps a friend in the military with his tests of underwater radar equipment.

S3·E26 Core

The Replacement

Jul 2, 1960

Mike straightens out a pair of teenagers who poisoned a shark Mike had captured for Marineland.

S3·E27 Core

Underwater Beacon

Jul 9, 1960

While helping to test a friend's underwater radio device, Mike discovers a submerged radio beacon, camouflaged and guarded by an electric gun.

S3·E28 Core

Time Fuse

Jul 16, 1960

A small Latin American country calls upon Mike to help defuse a sunken munitions ship set to blow by saboteurs.

S3·E29 Core

Storm Drain

Jul 23, 1960

Mike goes after a newlywed teenager turned fugitive after a bungled holdup prompts him to hide in the city's storm drain system.

S3·E30 Core

The Invader

Jul 30, 1960

Mike trains a pair of frogmen for a rescue mission in which they will rescue their kidnapped president from an ancient fortress.

S3·E31 Core

Changing Patterns

Aug 6, 1960

When Mike is called upon to teach scuba diving to his former mentor who trained him in helmet diving, he finds that the older man is not physically up to it.

S3·E32 Core

The Catalyst

Aug 13, 1960

The Coast Guard asks Mike to investigate the drowning death of a scientist who had invented a new type of rebreather.

S3·E33 Core

The Missing Link

Aug 20, 1960

A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication.

S3·E34 Core

Underwater Narcotics

Aug 27, 1960

Mike discovers a plant growing profusely on the ocean floor that turns out to be a hybrid cannabis, and he is speared when he investigates further.

S3·E35 Core

The Sound of Nothing

Sep 3, 1960

Mike is sent by the government to investigate a jamming signal affecting a listening station in the Indian Ocean.

S3·E36 Core

Prima Donna

Sep 10, 1960

Another movie company using Mike as an advisor needs his help when a planned torpedo blast traps the star and a Hollywood columnist onboard a sinking ship.

S3·E37 Core

Beyond Limits

Sep 17, 1960

Mike races foreign agents to a missile fired from Central Asia in order to photograph it on the sea bottom and obtain its data recorder.

S3·E38 Mytharc

Diplomatic Pouch

Sep 24, 1960

Mike tries to outmaneuver a foreign harbormaster as he attempts to retrieve a diplomatic pouch from an airliner that crashed into the sea.

S3·E39 Mytharc

Man Overboard

Oct 1, 1960

Mike responds to a ""man overboard"" situation, but an extensive search turns up no victim.

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