Season 1
39 episodes · Jan 4, 1958
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S1E1Sixty Feet Below
Jan 4, 1958Mike tries to free the pilot of a downed jet from his watertight cockpit before his air runs out, without causing the man's death from the water pressure.
S1E2Flooded Mine
Jan 11, 1958While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors.
S1E3Rapture of the Deep
Jan 25, 1958A grudge between two divers whom Mike is testing for underwater mining skills becomes a secondary issue when one of them contracts nitrogen narcosis.
S1E4Mark of the Octopus
Feb 1, 1958Before Mike can investigate the disappearance of a pair of skin-diving geologists, one turns up dead on the beach bearing marks resembling the suction valves of a giant octopus.
S1E5The Sea Sled
Feb 8, 1958Mike helps the Immigration Department Border Patrol break up an underwater border-running operation.
S1E6Female of the Species
Feb 15, 1958A beautiful woman hires Mike to give her diving lessons for mysterious reasons.
S1E7Mr. Guinea Pig
Feb 22, 1958An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico.
- S1E8
Sonar Queen
Mar 1, 1958Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared.
- S1E9
Gold Below
Mar 8, 1958A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship.
- S1E10
Recovery
Mar 15, 1958Mike dives into the Caribbean to recover the lost nose cone from an ICBM rocket before enemy agents can get it.
- S1E11
Killer Whale
Mar 22, 1958A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline.
- S1E12
Midget Submarine
Mar 29, 1958Mike plays commando in rescuing a scientist who had defected from Soviet kidnappers who are returning him to Moscow aboard a Pacific liner.
- S1E13
The Shark Cage
Apr 5, 1958Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters.
- S1E14
Hardhat
Apr 12, 1958Mike competes with a pair of helmet divers to salvage a German submarine sunk off the coast of South America.
- S1E15
Continental Rift
Apr 19, 1958A man claims to have invented a machine that can locate ships carrying gold.
- S1E16
The Poacher
Apr 26, 1958Mike is nearly killed by a massive electrical jolt used by a poacher to kill fish in the Florida Everglades.
- S1E17
Girl in the Trunk
May 3, 1958Mike comes to the aid of a female escape artist when her underwater stunt goes awry.
- S1E18
The Sponge Divers
May 10, 1958Mike interrupts an underwater survey in the Gulf of Mexico in order to save a diver whose air line has become snarled.
- S1E19
Diamond River
May 17, 1958Mike supervises a diamond diving expedition in South America, but discovers that his employers are poaching on someone else's property.
- S1E20
Alligator Story
May 24, 1958A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park.
- S1E21
Magnetic Mine
May 31, 1958An entire Mexican town is menaced by the presence of a derelict floating mine in its harbor that could ignite fumes from the local nitrate factory if it is detonated.
- S1E22
Underwater Patrol
Jun 7, 1958The State of Florida hires Mike to organize and train an underwater police force to deal with a series of underwater crimes.
- S1E23
Legend of the Mermaid
Jun 14, 1958Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths.
- S1E24
Pressure Suit
Jun 21, 1958A professor and his daughter hire Mike to help them search for a rare underwater plant in Costa Rica.
- S1E25
The Prospectors
Jun 28, 1958A pair of prospectors hire Mike to trace the source of radioactive fish with a Geiger counter in hopes of finding a uranium deposit.
- S1E26
The Hero
Jul 5, 1958Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru.
- S1E27
Underwater Station
Jul 12, 1958Mike finds a famous rocket scientist being held in an underwater prison by enemy agents.
- S1E28
The Lost Ones
Jul 19, 1958A frustrated former athlete pushes his children to be Olympic swimmers, resulting in their becoming trapped in a cave by a rising tide.
- S1E29
Capture of the Santa Rosa
Jul 26, 1958Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers.
- S1E30
The Shipwreck
Aug 2, 1958Mike and three other survivors share a life raft after a storm capsizes their boats.
- S1E31
The Big Dive
Aug 9, 1958Mike's work on a movie prompts a fellow stunt diver to attempt a dangerous record-setting dive.
- S1E32
The Birthday Present
Aug 16, 1958After locating a leak in a gas line and retrieving a young boy's sunken bicycle, Mike is beaten up and threatened by a gang of thugs.
- S1E33
Dead Man's Cove
Aug 23, 1958An underwater camera holds the key to determining whether a woman's drowning was accidental, as her husband claims, or not.
- S1E34
Explosion
Aug 30, 1958Mike is hired to destroy an underwater offshore peak that is notorious for ripping the hulls out of passing ships.
- S1E35
The Amphibian
Sep 6, 1958A group of sportsmen hire Mike to supervise their skin-diving outing, whereupon one of them sneaks off and begins photographing secret Navy facilities.
- S1E36
Lord Christobal
Sep 13, 1958Mike is hired by an insurance company to investigate the sinking of a freighter, but a murder indicates that someone doesn't want him to complete his task.
- S1E38
The Sea Has Ears
Sep 27, 1958The murder of a telephone company employee leads Mike to an underwater cable that is being tapped to access top-secret research Conferences.
- S1E39
The Manganese Story
Oct 4, 1958Mike discovers an important manganese deposit, but an ambitious young geologist, sharks, and an approaching hurricane threaten to silence him before he can inform the government.