The Replacement

July 2, 1960

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Sea Hunt - S3 - E26

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

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Sea Hunt: Season 3 - 39 Episode s

3x1 - Asylum
January 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.
3x2 - Water Nymphs
January 16, 1960
A swimsuit designer hires Mike to do an underwater fashion shoot, but corporate espionage interferes with the job.
3x3 - Mister Big
January 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.
3x4 - Hot Cargo
January 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.
3x5 - Underwater Drop
February 6, 1960
An accidental death puts Mike onto an espionage ring that is using an underwater cave for a microfilm drop site.
3x6 - Cobalt Bomb
February 13, 1960
Mike and a female health official try to remove a dangerously radioactive capsule from a sunken ship.
3x7 - Counterfeit
February 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 republic.
3x8 - Missile Watch
February 27, 1960
Mike finds that someone has tapped the underwater cable used in monitoring a televised missile test.
3x9 - Jade Cavern
March 5, 1960
Mike rescues a diver in the Bahamas, then helps her with her research into the origin of a jade statue she owns.
3x10 - Expatriate's Return
March 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.
3x11 - Strong Box
March 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.
3x12 - The Fearmakers
March 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.
3x13 - Revolutionary Spoils
April 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.
3x14 - Pirate Gold
April 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.
3x15 - The Living Fossil
April 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.
3x16 - Submarine Explosion
April 23, 1960
Scientists risk triggering a tidal wave when they ignore Mike's warnings about the strength of the explosive charges they're using.
3x17 - Sacred Pool
April 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.
3x18 - 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.
3x19 - Cross Current
May 14, 1960
Mike searches for a vanished oceanographer by retracing her charted course.
3x20 - 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.
3x21 - The Cellini Vase
May 28, 1960
Mike becomes suspicious when his hired dive on a Spanish galleon yields a rare art treasure.
3x22 - Target
June 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.
3x23 - Ghost Light
June 11, 1960
An East Indian oceanographer vanishes during a series of underwater experiments with infra-red light.
3x24 - Rebreather
June 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.
3x25 - Blind Spot
June 25, 1960
Mike helps a friend in the military with his tests of underwater radar equipment.
3x26 - The Replacement
July 2, 1960
Mike straightens out a pair of teenagers who poisoned a shark Mike had captured for Marineland.
3x27 - Underwater Beacon
July 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.
3x28 - Time Fuse
July 16, 1960
A small Latin American country calls upon Mike to help defuse a sunken munitions ship set to blow by saboteurs.
3x29 - Storm Drain
July 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.
3x30 - The Invader
July 30, 1960
Mike trains a pair of frogmen for a rescue mission in which they will rescue their kidnapped president from an ancient fortress.
3x31 - Changing Patterns
August 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.
3x32 - The Catalyst
August 13, 1960
The Coast Guard asks Mike to investigate the drowning death of a scientist who had invented a new type of rebreather.
3x33 - The Missing Link
August 20, 1960
A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication.
3x34 - Underwater Narcotics
August 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.
3x35 - The Sound of Nothing
September 3, 1960
Mike is sent by the government to investigate a jamming signal affecting a listening station in the Indian Ocean.
3x36 - Prima Donna
September 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.
3x37 - Beyond Limits
September 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.
3x38 - Diplomatic Pouch
September 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.
3x39 - Man Overboard
October 1, 1960
Mike responds to a ""man overboard"" situation, but an extensive search turns up no victim.

3x1 - Asylum

3x2 - Water Nymphs

3x3 - Mister Big

3x4 - Hot Cargo

3x5 - Underwater Drop

3x6 - Cobalt Bomb

3x7 - Counterfeit

3x8 - Missile Watch

3x9 - Jade Cavern

3x10 - Expatriate's Return

3x11 - Strong Box

3x12 - The Fearmakers

3x13 - Revolutionary Spoils

3x14 - Pirate Gold

3x15 - The Living Fossil

3x16 - Submarine Explosion

3x17 - Sacred Pool

3x18 - Cindy

3x19 - Cross Current

3x20 - Synthetic Hero

3x21 - The Cellini Vase

3x22 - Target

3x23 - Ghost Light

3x24 - Rebreather

3x25 - Blind Spot

3x26 - The Replacement

3x27 - Underwater Beacon

3x28 - Time Fuse

3x29 - Storm Drain

3x30 - The Invader

3x31 - Changing Patterns

3x32 - The Catalyst

3x33 - The Missing Link

3x34 - Underwater Narcotics

3x35 - The Sound of Nothing

3x36 - Prima Donna

3x37 - Beyond Limits

3x38 - Diplomatic Pouch

3x39 - Man Overboard

S1: Season 1

S2: Season 2

S3: Season 3

S4: Season 4