Sea Hunt

Mike Nelson is a S.C.U.B.A. diver in the days when it was still very new. He works alone, and the plot was mostly carried through his voice-over narrations. These gave the show a flavor of a radio program. Typical adventures were finding a downed satellite or sunken treasure.

Genre: Action, Adventure

Cast:Lloyd Bridges , Ken Drake , Courtney Brown , Jan Harrison , William Boyett , Richard Probert , Russ Conway , Leonard Nimoy , Frank Warren , Zale Parry , John Zaremba , Ross Elliott , A.G. Vitanza , Anthony George , Lisa Gaye , Rodolfo Hoyos Jr. , Ric Marlow , Charles Maxwell

1Season 1

S1.E1 ∙ Sixty Feet Below

Sat, Jan 4, 1958

Racing against time, Mike Nelson attempts a risky rescue of a test pilot trapped in his plane's cockpit 60 feet below the ocean's surface.

2Season 1

S1.E2 ∙ Flooded Mine

Sat, Jan 11, 1958

Mike travels 1500 miles inland to a flooded mine where two men are trapped in a foul air pocket. He reaches them, but his dilemma is that there is only enough air in his tank to rescue the miners one-at-a-time and not enough air in the pocket for the remaining man to survive until he returns with more air. Who will go? Who will stay? How will he decide?

3Season 1

S1.E3 ∙ Rapture of the Deep

Sat, Jan 25, 1958

While testing the skills of two divers, Mike is attacked by one of them, whom is suffering from rapture of the deep.

4Season 1

S1.E4 ∙ Mark of the Octopus

Sat, Feb 1, 1958

Mike is asked to investigate when two underwater geologists disappear, one of whom washes up on the beach with marks of a struggle with a gigantic octopus.

5Season 1

S1.E5 ∙ The Sea Sled

Sat, Feb 8, 1958

Mike Nelson rescues an unidentified girl from drowning. The Immigration Department suspects she's an illegal alien and releases her in Mike's custody.

6Season 1

S1.E6 ∙ Female of the Species

Sat, Feb 15, 1958

Although Kay Dalton is terrified of the sea, she is determined to dive for a cache of stolen diamonds.

7Season 1

S1.E7 ∙ Mr. Guinea Pig

Sat, Feb 22, 1958

An old flame comes back into Mike's life, and she's nothing but trouble.

8Season 1

S1.E8 ∙ Sonar Queen

Sat, Mar 1, 1958

Mike has been hired to test a machine dubbed "the fish-finder" on an experimental boat called The Sonar Queen, in hopes of determining why all of the fish have disappeared from the coast of a Mexican fishing village.

9Season 1

S1.E9 ∙ Gold Below

Sat, Mar 8, 1958

Mike comes to the aid of a young friend, whom has been fooled into working for a couple unsavory treasure hunters.

10Season 1

S1.E10 ∙ Recovery

Sat, Mar 15, 1958

Mike searches the ocean bottom for a gone-astray nose cone.

11Season 1

S1.E11 ∙ Killer Whale

Sat, Mar 22, 1958

Mike hunts down a killer whale that has been terrorizing a local coastal community.

12Season 1

S1.E12 ∙ Midget Submarine

Sat, Mar 29, 1958

Mike pilots a mini-submarine in an attempt to rescue a Russian scientist defector from a ship, where he is being held by his Soviet kidnappers.

13Season 1

S1.E13 ∙ The Shark Cage

Sat, Apr 5, 1958

Nelson is hired to study shark behavior at various depths and the effects of a new shark repellent.In Caribbean waters and with two other divers assisting him,he is lowered in a shark "cage" to accomplish the assignment.Before it is all over Mike is reminded that human beings also pose a danger to his life.

14Season 1

S1.E14 ∙ Hard Hat

Sat, Apr 12, 1958

Nelson,brought to the Latin American port of Santa Pueblo,investigates a recently found German WWII submarine.The sub,which had been on a secret mission,may contain secret documents or weapons,the remains of top Nazi Party members-or gold! "Hard hat" divers backed by the country's dictator interfere in the exploration.

15Season 1

S1.E15 ∙ Marvelous Treasure Machine

Sat, Apr 19, 1958

An overly energetic man appears on Nelson's boat and claims to have built a machine which can find shipwrecks by calculating where the shifting of the earth's plates have moved them. After a successful test run, the objective is to find lost barges carrying gold! Oddly, Nelson is more interested in the machine itself.

16Season 1

S1.E16 ∙ The Poacher

Sat, Apr 26, 1958

Mike assists the authorities in trying to apprehend a poacher operating in the swamps of Silver Springs, Florida.

17Season 1

S1.E17 ∙ Girl in the Trunk

Sat, May 3, 1958

Mike has serious concerns regarding a dangerous, underwater, carnival magic act.

18Season 1

S1.E18 ∙ The Sponge Divers

Sat, May 10, 1958

Mike comes to the aid of a young diver - in more ways than one.

19Season 1

S1.E19 ∙ Diamond River

Sat, May 17, 1958

Mike Nelson accepts a job to supervise a diving expedition for diamonds in South America, but soon rebels against his employers.

20Season 1

S1.E20 ∙ Alligator Story

Sat, May 24, 1958

Mike Nelson goes after a vicious alligator that escapes from a wild-animal show in Silver Springs, Fla. and takes refuge in the lake in a public park.

21Season 1

S1.E21 ∙ Magnetic Mine

Sat, May 31, 1958

Mike Nelson learns of a derelict mine which has drifted into a California harbor.

22Season 1

S1.E22 ∙ Underwater Patrol

Sat, Jun 7, 1958

Mike Nelson is called in by the Florida State Police to help solve a series of underwater crimes.

23Season 1

S1.E23 ∙ Legend of the Mermaid

Sat, Jun 14, 1958

Mike investigates the legend of a mermaid located in an underwater cave off the west coast of Florida.

24Season 1

S1.E24 ∙ Pressure Suit

Sat, Jun 21, 1958

A professor and his daughter hire Mike Nelson to help them search for a rare underwater plant in Costa Rica.

25Season 1

S1.E25 ∙ The Prospectors

Sat, Jun 28, 1958

Two prospectors (one of whom is at times violently paranoid about being cheated) ask Nelson to join them in a search for uranium deposits in a river bottom. When after two futile weeks Nelson finally has a positive reading on his Geiger counter, the paranoid partner snaps and lets his suspicions get the better of him.

26Season 1

S1.E26 ∙ The Hero

Sat, Jul 5, 1958

To fund research for an "ocean plants into food products" project, Nelson agrees to travel to Puerto Blanco/South America. There he teaches skin diving to a thrill seeking millionaire hunter and his wife. The boorish hunter wants to kill a large shark and a giant squid for his trophy case. An accident quickly matures the man.

27Season 1

S1.E27 ∙ Underwater Station

Sat, Jul 12, 1958

Mike discovers a kidnapped scientist being held in an underwater prison cell.

28Season 1

S1.E28 ∙ The Lost Ones

Sat, Jul 19, 1958

Offshore near Santa Barbara,Nelson is testing a sea "scooter". Meanwhile,a know-it-all ex-athlete and his wife are spending the day at the beach with their two kids. The kids are carelessly allowed to explore the area and end up trapped in a cave which high-tide will engulf. Nelson and his scooter attempt to be of help.

29Season 1

S1.E29 ∙ Capture of the Santa Rosa

Sat, Jul 26, 1958

Mike attempts to rescue a kidnapped Latin American diplomat being held with his wife at sea on his pleasure boat named Santa Rosa.

30Season 1

S1.E30 ∙ The Shipwreck

Sat, Aug 2, 1958

An unexpected storm capsizes a boat.

31Season 1

S1.E31 ∙ The Big Dive

Sat, Aug 9, 1958

A stuntman tries to break the world's skin-diving record.

32Season 1

S1.E32 ∙ The Birthday Present

Sat, Aug 16, 1958

Hoodlums attack Mike after he explores the waters around a pier.

33Season 1

S1.E33 ∙ Dead Man's Cove

Sat, Aug 23, 1958

Mike tries to prove that a woman's drowning was not accidental.

34Season 1

S1.E34 ∙ Killer Rock

Sat, Aug 30, 1958

Mike is hired to make a molehill out of an underwater mountain.

35Season 1

S1.E35 ∙ The Amphibian

Sat, Sep 6, 1958

While underwater, a member of Mike's supervised diving party goes missing.

36Season 1

S1.E36 ∙ Lord Cristobal

Sat, Sep 13, 1958

Mike's life is targeted for murder during his insurance investigation of a sunken ship.

37Season 1

S1.E37 ∙ Decoy

Sat, Sep 20, 1958

Mike investigates reports of a sea monster, which is literally causing whales to leap into the air above the ocean's surface.

38Season 1

S1.E38 ∙ The Sea Has Ears

Sat, Sep 27, 1958

Mike searches for the divers who are tapping top secret telephone communications along an underwater cable.

39Season 1

S1.E39 ∙ The Manganese Story

Sat, Oct 4, 1958

Mike battles rough weather, sharks, bullets, and even a giant clam, as he searches for a deep-water manganese deposit, which could be invaluable to the U.S. Government.

1Season 2

S2.E1 ∙ The Alcatraz Story

Sun, Jan 4, 1959

Mike is hired by three brothers who want him to teach them how to Scuba dive.

2Season 2

S2.E2 ∙ Operation Greenback

Sun, Jan 11, 1959

Mike unwittingly becomes involved in the preparation of an underwater bank robbery.

3Season 2

S2.E3 ∙ Underwater Security

Sun, Jan 18, 1959

Mike battles saboteurs, while conducting an underwater security check for a rocket fuel plant.

4Season 2

S2.E4 ∙ Underwater Labyrinth

Sun, Jan 25, 1959

Mike battles spies in an underwater maze of caves.

5Season 2

S2.E5 ∙ Monte Cristo

Sun, Feb 1, 1959

A movie producer hires Mike Nelson to help in filming an underwater escape scene in "The Counte of Monte Cristo". Mike's problems include a reckless movie star and a jealous stand-in.

6Season 2

S2.E6 ∙ The Stunt

Sun, Feb 8, 1959

A woman, who is willing to do anything she can to win, challenges Mike to an underwater race, as a publicity stunt.

7Season 2

S2.E7 ∙ Diving for the Moon

Sun, Feb 15, 1959

Mike Nelson is called in on a space project and commissioned to experiment underwater with four top candidates for space travel.

8Season 2

S2.E8 ∙ The Search

Sun, Feb 22, 1959

Mike Nelson and three of his students search for a missing diver, who was dragged deep below the surface by a large fish that he speared.

9Season 2

S2.E9 ∙ Jettisoned

Sun, Mar 1, 1959

Mike conducts an emergency covert search in foreign waters to recover a nuclear warhead ditched by a U.S. Air Force plane. A local fishing boat interferes.

10Season 2

S2.E10 ∙ Murder at Sixty Feet

Sun, Mar 8, 1959

A beautiful millionairess who was crippled by a mountain climbing accident has her husband and doctor recommend scuba diving as therapy for her legs. Nelson is hired to work with her. The husband has an ulterior motive and it involves the strong currents at 60 feet below Drakes Head on the Pacific Coast.

11Season 2

S2.E11 ∙ Air Pockets

Sun, Mar 15, 1959

Mike conducts a desperate search for survivors soon after a freighter sinks to the bottom of a river in the city of New York. He finds two trapped men and a dog named Tiger surviving in an air pocket. He must quickly find a way to save the men - and Tiger, too.

12Season 2

S2.E12 ∙ The Dam

Sun, Mar 22, 1959

Mike investigates sabotage of a turbo-electric dam located in a desert area of a small country.

13Season 2

S2.E13 ∙ Dock Fire

Sun, Mar 29, 1959

Mike takes on a possible suicide mission, when he agrees to swim with a fire hose through an underwater intake pipe into a burning warehouse filled with combustible chemicals.

14Season 2

S2.E14 ∙ The Persuaders

Sun, Apr 5, 1959

Nelson passing on an invitation to enjoy a break at Catalina Island instead decides to do some needed maintenance work on his boat. However,he is "hired" at gunpoint to retrieve narcotics 60 feet down on the lee side of Rogers Island. Certain he will be killed upon completing the job, Nelson tries to figure a way out.

15Season 2

S2.E15 ∙ Nerve Gas

Sun, Apr 12, 1959

After discovering a sunken Japanese submarine, the amateur skin diver who found it goes violently berserk.

16Season 2

S2.E16 ∙ Strange Salvage

Sun, Apr 19, 1959

Mike helps the police investigate the apparent murders of two divers who were searching for a sunken yacht full of treasure.

17Season 2

S2.E17 ∙ Underwater Survey

Sun, Apr 26, 1959

While looking into the possibility of linking two Latin American lakes by a canal, Mike runs into a group of rebel guerillas.

18Season 2

S2.E18 ∙ Underwater Curtain

Sun, May 3, 1959

While on a research project, Mike encounters saboteur frogmen attempting to destroy the Panama Canal.

19Season 2

S2.E19 ∙ Hermes

Sun, May 10, 1959

A Greek sponge diver and his pretty girlfriend lay a minefield for Mike, fearful that he will interfere with their discovery of a valuable statue on the Mediterranean seabed.

20Season 2

S2.E20 ∙ The Briefcase

Sun, May 17, 1959

Mike searches for a diver who has just stolen a briefcase filled with top secret papers.

21Season 2

S2.E21 ∙ Cave Diving

Sun, May 24, 1959

A geologist, looking for uranium deposits in an underwater cave, is trapped by a landslide.

22Season 2

S2.E22 ∙ Water Ski Show

Sun, May 31, 1959

A champion water-skier drowns during the finale of a water show.

23Season 2

S2.E23 ∙ Underwater Shrine

Sun, Jun 7, 1959

Mike takes a husband and wife archaeologists on a cave dive.

24Season 2

S2.E24 ∙ Chain of Evidence

Sun, Jun 14, 1959

While on a diving assignment in a foreign country, Mike Nelson unwillingly becomes involved in proving that the country's military ruler is guilty of murdering a member of the opposition party.

25Season 2

S2.E25 ∙ Treasure Hunt

Sun, Jun 21, 1959

Shortly after a skin diver steals lobsters from an old fisherman as part of a secret club initiation, he disappears. Mike Nelson finds his spear gun near the lobster pots and the fisherman is accused of murder.

26Season 2

S2.E26 ∙ Sea Serpent

Sun, Jun 28, 1959

Mike is recruited to search for hidden stolen liquid explosives.

27Season 2

S2.E27 ∙ The Getaway

Sun, Jul 5, 1959

Mike attempts to rescue a kidnapped friend.

28Season 2

S2.E28 ∙ Underwater Ejection

Sun, Jul 12, 1959

When a nosecone's capsule fails to eject after landing in the ocean, Mike attempts to locate it and rescue the scientist trapped inside.

29Season 2

S2.E29 ∙ The Female

Sun, Jul 19, 1959

A female diving student plots revenge after Mike kicks her out of his diving class.

30Season 2

S2.E30 ∙ Port Security

Sun, Jul 26, 1959

Mike Nelson is on assignment to locate narcotics hidden below the waterline of vessels in the harbor.

31Season 2

S2.E31 ∙ Underwater Park

Sun, Aug 2, 1959

While conducting a visual and photographic survey for a State underwater park, Mike becomes a target for murder.

32Season 2

S2.E32 ∙ Underwater Unit

Sun, Aug 9, 1959

Mike takes part in a daring rescue mission of a woman held prisoner by foreign forces.

33Season 2

S2.E33 ∙ Proof of Guilt

Sun, Aug 16, 1959

Mike risks his life to catch pearl thieves off the coast of Hawaii.

34Season 2

S2.E34 ∙ Chained

Sun, Aug 23, 1959

Mike helps to bust up a murderous alien-smuggling ring.

35Season 2

S2.E35 ∙ Ransom

Sun, Aug 30, 1959

Mike gets involved in recovering stolen six valuable computer memory tapes, which are being held for ransom.

36Season 2

S2.E36 ∙ Oil Island

Sun, Sep 6, 1959

Mike attempts to free a salvage diver trapped under a tremendously heavy piece of deck cargo.

37Season 2

S2.E37 ∙ Base of Operations

Sun, Sep 13, 1959

Mike attempts to rescue a couple inexperienced divers from the deep.

38Season 2

S2.E38 ∙ Kelp Forest

Sun, Sep 20, 1959

A deep sea fisherman and his son arm and plant a World War II mine in an attempt to destroy a kelp harvester.

39Season 2

S2.E39 ∙ The Raft

Sun, Sep 27, 1959

Mike takes on a dangerous mission: Detonating explosives that are stored inside a sunken ship.

1Season 3

S3.E1 ∙ Asylum

Sat, Jan 9, 1960

Mike takes on the dangerous task of rescuing a political refugee, who is in an embassy and hiding from a Latin American dictator.

2Season 3

S3.E2 ∙ Water Nymphs

Sat, Jan 16, 1960

Mike battles a murderous style pirate, while working in the Bahamas as an underwater photographer for a famous bathing suit designer.

3Season 3

S3.E3 ∙ Mr. Big

Sat, Jan 23, 1960

With the use of an underwater camera fitted with a periscope lens, Mike helps agents round up members of an organized crime syndicate.

4Season 3

S3.E4 ∙ Hot Cargo

Sat, Jan 30, 1960

Mike takes command of the first underwater flotilla of the United States Coast Guard Auxillary in search of sunken radioactive cargo.

5Season 3

S3.E5 ∙ Underwater Drop

Sat, Feb 6, 1960

Mike helps the US Coast Guard in trapping enemy agents that are dropping microfilm canisters in an underwater cave.

6Season 3

S3.E6 ∙ Cobalt Bomb

Sat, Feb 13, 1960

Mike's assignment: Retrieve a deadly radioactive capsule and restore it to a lead container without exposing himself to gamma radiation that could take his life.

7Season 3

S3.E7 ∙ Counterfeit

Sat, Feb 20, 1960

Mike's vacation in The Bahamas is interrupted by the US Secret Service. They need him to search for two-million counterfeit dollars stashed at the bottom of the ocean.

8Season 3

S3.E8 ∙ Missile Watch

Sat, Feb 27, 1960

Mike tangles with enemy frogmen, while participating in a US Navy inspection of an underwater camera cable.

9Season 3

S3.E9 ∙ Jade Cavern

Sat, Mar 5, 1960

Mike rescues a girl diver who is trying to trace the origin of a jade statue she owns. He joins the search and is rewarded with an attack on his life.

10Season 3

S3.E10 ∙ Expatriate's Return

Sat, Mar 12, 1960

While on patrol with the U.S. Coast Guard Auxiliary, Mike becomes entangled with an exiled crime boss, who is trying to slip back into the country.

11Season 3

S3.E11 ∙ Strong Box

Sat, Mar 19, 1960

A thief endangers lives to secure a fortune in gems buried in the safe of a sunken ship.

12Season 3

S3.E12 ∙ The Fearmakers

Sat, Mar 26, 1960

When a dictator visiting the United States decides to land at a small harbor with almost no advance notice, Mike is called in by the Coast Guard for an underwater security check.

13Season 3

S3.E13 ∙ Revolutionary Spoils

Sat, Apr 2, 1960

Mike gets involved with helping foreign revolutionaries overthrow their dictator.

14Season 3

S3.E14 ∙ Pirate Gold

Sat, Apr 9, 1960

Mike races against time to rescue a 12-year-old boy trapped in an underwater grotto, rigged with explosives.

15Season 3

S3.E15 ∙ The Living Fossil

Sat, Apr 16, 1960

Mike joins a diving expedition in search of a prehistoric fish thought to be extinct for millions of years.

16Season 3

S3.E16 ∙ Submarine Explosion

Sat, Apr 23, 1960

Things go terribly wrong for Mike, while he is involved in planting underwater explosives in the ocean's floor.

17Season 3

S3.E17 ∙ Sacred Pool

Sat, Apr 30, 1960

Mike travels deep into the jungle areas of a small Latin-American country in search of a sacred pool of water and its secrets held within.

18Season 3

S3.E18 ∙ Cindy

Sat, May 7, 1960

Mike attempts a risky rescue of a young girl trapped inside an underwater mine.

19Season 3

S3.E19 ∙ Cross Current

Sat, May 14, 1960

Mike searches underwater for a missing female scientist friend.

20Season 3

S3.E20 ∙ Synthetic Hero

Sat, May 21, 1960

Mike investigates the wreck of a sunken Navy ship.

21Season 3

S3.E21 ∙ The Cellini Vase

Sat, May 28, 1960

Mike becomes suspicious of his employer, whom has hired him to search a three-century-old sunken Spanish galleon.

22Season 3

S3.E22 ∙ Target

Sat, Jun 4, 1960

After a mysterious radioactive object crashes into the ocean floor, Mike must dive to discover just what it is.

23Season 3

S3.E23 ∙ Ghost Light

Sat, Jun 11, 1960

While performing experimental underwater research utilizing infra-red light, a diver goes missing.

24Season 3

S3.E24 ∙ Rebreather

Sat, Jun 18, 1960

Mike takes on a dangerous spy mission while vacationing in the Caribbean.

25Season 3

S3.E25 ∙ Blind Spot

Sat, Jun 25, 1960

The US Coast Guard enlists Mike's help in determining the cause of sabotage to the radar of the coastal warning system.

26Season 3

S3.E26 ∙ The Replacement

Sat, Jul 2, 1960

Mike Nelson decides to teach two shark-killing juvenile delinquents a lesson - in catching a live shark.

27Season 3

S3.E27 ∙ Underwater Beacon

Sat, Jul 9, 1960

Mike investigates a mysterious signal emanating from the ocean's floor.

28Season 3

S3.E28 ∙ Time Fuse

Sat, Jul 16, 1960

Sabbateurs have rigged a sunken ship with 50 tons of dynamite, and it's Mike's job to diffuse the monstrous time-bomb before it blows up an entire foreign nation's capital.

29Season 3

S3.E29 ∙ Storm Drain

Sat, Jul 23, 1960

Mike attempts a risky rescue of a young criminal trapped in a storm drain.

30Season 3

S3.E30 ∙ The Invader

Sat, Jul 30, 1960

Mike is retained by a small Latin American country to train a cadre of underwater demolition experts. Mike and his team spring into action when the country's president is kidnapped.

31Season 3

S3.E31 ∙ Changing Patterns

Sat, Aug 6, 1960

Mike comes to the aid of his old diving instructor, whom is now getting too old to make dangerous dives.

32Season 3

S3.E32 ∙ The Catalyst

Sat, Aug 13, 1960

Mike investigates the mysterious drowning death of the inventor of an advanced rebreather device.

33Season 3

S3.E33 ∙ The Missing Link

Sat, Aug 20, 1960

Mike gets mixed up with two scientists trying to examine fossils from the sea.

34Season 3

S3.E34 ∙ Underwater Narcotics

Sat, Aug 27, 1960

Mike tangles with divers growing a hybrid form of marijuana under water.

35Season 3

S3.E35 ∙ The Sound of Nothing

Sat, Sep 3, 1960

Mike searches underwater for enemy scanning devices being utilized to jam American satellite signals.

36Season 3

S3.E36 ∙ Prima Donna

Sat, Sep 10, 1960

Mike attempts to rescue a movie starlet trapped underwater aboard a ship, which is flooded after a special effects dynamite blast.

37Season 3

S3.E37 ∙ Beyond Limits

Sat, Sep 17, 1960

The US Coast Guard recruits Mike to search for a missing missile on the ocean floor.

38Season 3

S3.E38 ∙ Diplomatic Pouch

Sat, Sep 24, 1960

Mike attempts to recover a Top Secret diplomatic pouch lost in hostile foreign waters.

39Season 3

S3.E39 ∙ Man Overboard

Sat, Oct 1, 1960

Mike investigates the mysterious disappearance of a man gone overboard only a half-mile from shore.

1Season 4

S4.E1 ∙ Point of No Return

Sat, Jan 7, 1961

As part of a research project, Mike Nelson attempts to spend three days underwater at a depth of 250 feet in a pressure chamber dubbed Scubasphere. A tropical storm pops up, and both the cable and telephone connections attached to the Coast Guard ship above are severed. To make matters worse, the ship heads for safer waters without realizing that Mike has lost his connection to them.

2Season 4

S4.E2 ∙ River Treasure

Sat, Jan 14, 1961

While in a South American jungle, Mike tangles with a jealous treasure hunter.

3Season 4

S4.E3 ∙ The Destroyers

Sat, Jan 21, 1961

Mike investigates the mysterious collision of two Navy destroyers.

4Season 4

S4.E4 ∙ Vital Error

Sat, Jan 28, 1961

Mike's normally level-headed skindiving buddy begins to exhibit peculiar behavior.

5Season 4

S4.E5 ∙ The Dancer

Sat, Feb 4, 1961

Mike desperately tries to save the life and limb of a popular dancer whose leg is hopelessly pinned in wreckage 90 feet below the surface.

6Season 4

S4.E6 ∙ Sperling of Lamatsue

Sat, Feb 11, 1961

Mike tries to recover valuable medical supplies that an Asiatic warlord has dumped into the river.

7Season 4

S4.E7 ∙ Rescue

Sat, Feb 18, 1961

Mike must dive to rescue a friend trapped in a sunken wreck, with just minutes left until explosive charges are set to blow it to pieces.

8Season 4

S4.E8 ∙ Mercy Ship

Sat, Feb 25, 1961

Mike risks his life in order to sneak badly needed medical supplies through a dictator's mine-infested blockade.

9Season 4

S4.E9 ∙ Hot Tracer

Sat, Mar 4, 1961

Problems arise as Mike attempts to retrieve a pair of radioactive cylinders leaking dangerous amounts of radiation underwater.

10Season 4

S4.E10 ∙ Sonar Story

Sat, Mar 11, 1961

Using sonar equipment on his boat, Mike tracks heroin smugglers.

11Season 4

S4.E11 ∙ Amigo

Sat, Mar 18, 1961

Mike travels to Mexico in search of underwater fossils in an inaccessible cave.

12Season 4

S4.E12 ∙ The Aquanettes

Sat, Mar 25, 1961

Mike takes part in a special program known as Operation Astronette. His job is to train three female astronauts in underwater survival skills.

13Season 4

S4.E13 ∙ Survival Kit

Sat, Apr 1, 1961

Mike attempts to salvage a survival kit from a German fighter plane shot down during World War II.

14Season 4

S4.E14 ∙ Expedition

Sat, Apr 8, 1961

Professor Halliday wants more money to carry on his underwater exploration.

15Season 4

S4.E15 ∙ Bionics

Sat, Apr 15, 1961

An inventor dies while testing a new underwater detection device.

16Season 4

S4.E16 ∙ The Defector

Sat, Apr 22, 1961

Mike tells an inept skin-diving pupil that there's no point in continuing his lessons.

17Season 4

S4.E17 ∙ Niko

Sat, Apr 29, 1961

Mike attempts to diffuse two sunken torpedoes, as well as diffusing the racial tensions between the Japanese and American members of his 3-man team.

18Season 4

S4.E18 ∙ Cougar

Sat, May 6, 1961

Mike and a young man, whom he had helped rehabilitate when he was a juvenile delinquent, fly to Hawaii to hunt for lionfish, one of the most venomous fish on the ocean floor.

19Season 4

S4.E19 ∙ Sub Hatch

Sat, May 13, 1961

Mike and his partner fight the bends, as they endure a long recovery process in a submarine's escape trunk.

20Season 4

S4.E20 ∙ The Octopus Story

Sat, May 20, 1961

Mike and his diving team are attacked by a violent new breed of octopus.

21Season 4

S4.E21 ∙ Quicksand

Sat, May 27, 1961

While searching for a sunken wreck, Mike's hard hat diving partner disappears, leaving nothing behind but his torn air hose attached to their boat on the surface.

22Season 4

S4.E22 ∙ Lost Island

Sat, Jun 3, 1961

While on a covert mission for the U.S. Government, Mike discovers a few unsavory inhabitants on what was supposedly a deserted island.

23Season 4

S4.E23 ∙ Baby

Sat, Jun 10, 1961

While in the dangerous jungles of Ecuador, Mike takes desperate measures to save the life of his very ill infant godson.

24Season 4

S4.E24 ∙ Confidential Mission

Sat, Jun 17, 1961

Mike travels undercover to the Caribbean Coast on a secret mission for the United States Government.

25Season 4

S4.E25 ∙ Underwater Pirates

Sat, Jun 24, 1961

It's a battle of wits, as Mike tries to outsmart pirates intent on hijacking the cargo of a sunken wreck that he found.

26Season 4

S4.E26 ∙ The Meet

Sat, Jul 1, 1961

Mike is recruited to track down counterfeiters.

27Season 4

S4.E27 ∙ Dark Evil

Sat, Jul 8, 1961

While Mike is in Nassau on a salvage job, two of his friends catch and eat a strangely poisonous fish for breakfast, which causes severe hallucinations that trigger suicidal and homicidal tendencies.

28Season 4

S4.E28 ∙ Sunken Car

Sat, Jul 15, 1961

After being falsely arrested for diving in a bay, Mike sets out to solve a murder mystery.

29Season 4

S4.E29 ∙ Hit and Run

Sat, Jul 22, 1961

A female diving friend of Mike's is hospitalized with severe injuries sustained by a hit-and-run speedboat piloted by a popular movie star.

30Season 4

S4.E30 ∙ The Saint Story

Sat, Jul 29, 1961

Mike is recruited to rescue the statue of a Saint who falls off a ship into the sea. The locals believe this is the cause of many problems in the area including the poor fishing.

31Season 4

S4.E31 ∙ Imposter

Sat, Aug 5, 1961

Mike is suspected of insurance fraud, after an impostor steals a valuable necklace.

32Season 4

S4.E32 ∙ Superman

Sat, Aug 12, 1961

Mike is invited to join a longtime friend and her workaholic husband on their expedition to explore an Aztec ceremonial pool on an uninhabited island located 15 miles off the coast of Mexico. Mike's friend unwittingly puts her husband's life in jeopardy, when she deliberately strands the trio on the island.

33Season 4

S4.E33 ∙ Roustabout

Sat, Aug 19, 1961

A South American city's water supply is threatened by a drum of poison from an overturned truck.

34Season 4

S4.E34 ∙ P.T. Boat

Sat, Aug 26, 1961

While vacationing in Nassau, Bahamas, Mike meets an eccentric multi-millionaire inventor and his sister. He helps the man experiment with an underwater remote control device used to guide boats.

35Season 4

S4.E35 ∙ Starting Signal

Sat, Sep 2, 1961

Mike battles underwater saboteurs, as he assists the US Navy with underwater sound travel experiments.

36Season 4

S4.E36 ∙ Skipper

Sat, Sep 9, 1961

Mike investigates the ramming of a Coast Guard boat by a hydroplane piloted by a friend of his during a race.

37Season 4

S4.E37 ∙ Crime at Sea

Sat, Sep 16, 1961

Mike Nelson sets out to prove that the death at sea of a friend's father was the result of murder.

38Season 4

S4.E38 ∙ Round Up

Sat, Sep 23, 1961

Underwater explosives threaten to make this Mike Nelson's final dive.