E01 · Sixty Feet Below
1/4/1958
Mike 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.
E02 · Flooded Mine
1/11/1958
While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors.
E03 · Rapture of the Deep
1/25/1958
A grudge between two divers whom Mike is testing for underwater mining skills becomes a secondary issue when one of them contracts nitrogen narcosis.
E04 · Mark of the Octopus
2/1/1958
Before 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.
E05 · The Sea Sled
2/8/1958
Mike helps the Immigration Department Border Patrol break up an underwater border-running operation.
E06 · Female of the Species
2/15/1958
A beautiful woman hires Mike to give her diving lessons for mysterious reasons.
E07 · Mr. Guinea Pig
2/22/1958
An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico.
E08 · Sonar Queen
3/1/1958
Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared.
E09 · Gold Below
3/8/1958
A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship.
E10 · Recovery
3/15/1958
Mike dives into the Caribbean to recover the lost nose cone from an ICBM rocket before enemy agents can get it.
E11 · Killer Whale
3/22/1958
A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline.
E12 · Midget Submarine
3/29/1958
Mike plays commando in rescuing a scientist who had defected from Soviet kidnappers who are returning him to Moscow aboard a Pacific liner.
E13 · The Shark Cage
4/5/1958
Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters.
E14 · Hardhat
4/12/1958
Mike competes with a pair of helmet divers to salvage a German submarine sunk off the coast of South America.
E15 · Continental Rift
4/19/1958
A man claims to have invented a machine that can locate ships carrying gold.
E16 · The Poacher
4/26/1958
Mike is nearly killed by a massive electrical jolt used by a poacher to kill fish in the Florida Everglades.
E17 · Girl in the Trunk
5/3/1958
Mike comes to the aid of a female escape artist when her underwater stunt goes awry.
E18 · The Sponge Divers
5/10/1958
Mike interrupts an underwater survey in the Gulf of Mexico in order to save a diver whose air line has become snarled.
E19 · Diamond River
5/17/1958
Mike supervises a diamond diving expedition in South America, but discovers that his employers are poaching on someone else's property.
E20 · Alligator Story
5/24/1958
A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park.
E21 · Magnetic Mine
5/31/1958
An 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.
E22 · Underwater Patrol
6/7/1958
The State of Florida hires Mike to organize and train an underwater police force to deal with a series of underwater crimes.
E23 · Legend of the Mermaid
6/14/1958
Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths.
E24 · Pressure Suit
6/21/1958
A professor and his daughter hire Mike to help them search for a rare underwater plant in Costa Rica.
E25 · The Prospectors
6/28/1958
A pair of prospectors hire Mike to trace the source of radioactive fish with a Geiger counter in hopes of finding a uranium deposit.
E26 · The Hero
7/5/1958
Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru.
E27 · Underwater Station
7/12/1958
Mike finds a famous rocket scientist being held in an underwater prison by enemy agents.
E28 · The Lost Ones
7/19/1958
A frustrated former athlete pushes his children to be Olympic swimmers, resulting in their becoming trapped in a cave by a rising tide.
E29 · Capture of the Santa Rosa
7/26/1958
Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers.
E30 · The Shipwreck
8/2/1958
Mike and three other survivors share a life raft after a storm capsizes their boats.
E31 · The Big Dive
8/9/1958
Mike's work on a movie prompts a fellow stunt diver to attempt a dangerous record-setting dive.
E32 · The Birthday Present
8/16/1958
After 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.
E33 · Dead Man's Cove
8/23/1958
An underwater camera holds the key to determining whether a woman's drowning was accidental, as her husband claims, or not.
E34 · Explosion
8/30/1958
Mike is hired to destroy an underwater offshore peak that is notorious for ripping the hulls out of passing ships.
E35 · The Amphibian
9/6/1958
A group of sportsmen hire Mike to supervise their skin-diving outing, whereupon one of them sneaks off and begins photographing secret Navy facilities.
E36 · Lord Christobal
9/13/1958
Mike 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.
E37 · Decoy
9/20/1958
Mike investigates reports of a sea monster off the coast of Mexico.
E38 · The Sea Has Ears
9/27/1958
The murder of a telephone company employee leads Mike to an underwater cable that is being tapped to access top-secret research Conferences.
E39 · The Manganese Story
10/4/1958
Mike 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.