Season 3
39 episodes · Jan 9, 1960
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- S3E1
Asylum
Jan 9, 1960Working for the State Department, Mike attempts to rescue a political prisoner in South America by using a harbor city's canal system.
- S3E2
Water Nymphs
Jan 16, 1960A swimsuit designer hires Mike to do an underwater fashion shoot, but corporate espionage interferes with the job.
- S3E3
Mister Big
Jan 23, 1960Mike 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.
- S3E4
Hot Cargo
Jan 30, 1960Mike finds high radiation coming from the hull of a foreign freighter, but when the Coast Guard investigates, they find no trace of the radioactivity.
- S3E5
Underwater Drop
Feb 6, 1960An accidental death puts Mike onto an espionage ring that is using an underwater cave for a microfilm drop site.
- S3E6
Cobalt Bomb
Feb 13, 1960Mike and a female health official try to remove a dangerously radioactive capsule from a sunken ship.
- S3E7
Counterfeit
Feb 20, 1960Mike, 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.
- S3E8
Missile Watch
Feb 27, 1960Mike finds that someone has tapped the underwater cable used in monitoring a televised missile test.
- S3E9
Jade Cavern
Mar 5, 1960Mike rescues a diver in the Bahamas, then helps her with her research into the origin of a jade statue she owns.
- S3E10
Expatriate's Return
Mar 12, 1960While 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.
- S3E11
Strong Box
Mar 19, 1960Mike 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.
- S3E12
The Fearmakers
Mar 26, 1960In preparation for the visit of a foreign head of state, Mike helps the Coast Guard do a security check on the area.
- S3E13
Revolutionary Spoils
Apr 2, 1960A 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.
- S3E14
Pirate Gold
Apr 9, 1960While 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.
- S3E15
The Living Fossil
Apr 16, 1960While 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.
- S3E16
Submarine Explosion
Apr 23, 1960Scientists risk triggering a tidal wave when they ignore Mike's warnings about the strength of the explosive charges they're using.
- S3E17
Sacred Pool
Apr 30, 1960Mike 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.
- S3E18
Cindy
May 7, 1960Mike 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.
- S3E19
Cross Current
May 14, 1960Mike searches for a vanished oceanographer by retracing her charted course.
- S3E20
Synthetic Hero
May 21, 1960Mike 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.
- S3E21
The Cellini Vase
May 28, 1960Mike becomes suspicious when his hired dive on a Spanish galleon yields a rare art treasure.
S3E22Target
Jun 4, 1960While 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.
- S3E23
Ghost Light
Jun 11, 1960An East Indian oceanographer vanishes during a series of underwater experiments with infra-red light.
- S3E24
Rebreather
Jun 18, 1960Mike 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.
- S3E25
Blind Spot
Jun 25, 1960Mike helps a friend in the military with his tests of underwater radar equipment.
- S3E26
The Replacement
Jul 2, 1960Mike straightens out a pair of teenagers who poisoned a shark Mike had captured for Marineland.
- S3E27
Underwater Beacon
Jul 9, 1960While helping to test a friend's underwater radio device, Mike discovers a submerged radio beacon, camouflaged and guarded by an electric gun.
- S3E28
Time Fuse
Jul 16, 1960A small Latin American country calls upon Mike to help defuse a sunken munitions ship set to blow by saboteurs.
- S3E29
Storm Drain
Jul 23, 1960Mike goes after a newlywed teenager turned fugitive after a bungled holdup prompts him to hide in the city's storm drain system.
- S3E30
The Invader
Jul 30, 1960Mike trains a pair of frogmen for a rescue mission in which they will rescue their kidnapped president from an ancient fortress.
- S3E31
Changing Patterns
Aug 6, 1960When 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.
- S3E32
The Catalyst
Aug 13, 1960The Coast Guard asks Mike to investigate the drowning death of a scientist who had invented a new type of rebreather.
- S3E33
The Missing Link
Aug 20, 1960A scientific society hires Mike to obtain fossil samples from a newly-discovered underwater cavern for the purpose of authentication.
- S3E34
Underwater Narcotics
Aug 27, 1960Mike 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.
- S3E35
The Sound of Nothing
Sep 3, 1960Mike is sent by the government to investigate a jamming signal affecting a listening station in the Indian Ocean.
- S3E36
Prima Donna
Sep 10, 1960Another 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.
- S3E37
Beyond Limits
Sep 17, 1960Mike races foreign agents to a missile fired from Central Asia in order to photograph it on the sea bottom and obtain its data recorder.
- S3E38
Diplomatic Pouch
Sep 24, 1960Mike tries to outmaneuver a foreign harbormaster as he attempts to retrieve a diplomatic pouch from an airliner that crashed into the sea.
- S3E39
Man Overboard
Oct 1, 1960Mike responds to a ""man overboard"" situation, but an extensive search turns up no victim.