Season 1

01 Sixty Feet Below Episode 14th January 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. 02 Flooded Mine Episode 211th January 1958 While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors. 03 Rapture of the Deep Episode 325th January 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. 04 Mark of the Octopus Episode 41st February 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. 05 The Sea Sled Episode 58th February 1958 Mike helps the Immigration Department Border Patrol break up an underwater border-running operation. 06 Female of the Species Episode 615th February 1958 A beautiful woman hires Mike to give her diving lessons for mysterious reasons. 07 Mr. Guinea Pig Episode 722nd February 1958 An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico. 08 Sonar Queen Episode 81st March 1958 Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared. 09 Gold Below Episode 98th March 1958 A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship. 10 Recovery Episode 1015th March 1958 Mike dives into the Caribbean to recover the lost nose cone from an ICBM rocket before enemy agents can get it. 11 Killer Whale Episode 1122nd March 1958 A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline. 12 Midget Submarine Episode 1229th March 1958 Mike plays commando in rescuing a scientist who had defected from Soviet kidnappers who are returning him to Moscow aboard a Pacific liner. 13 The Shark Cage Episode 135th April 1958 Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters. 14 Hardhat Episode 1412th April 1958 Mike competes with a pair of helmet divers to salvage a German submarine sunk off the coast of South America. 15 Continental Rift Episode 1519th April 1958 A man claims to have invented a machine that can locate ships carrying gold. 16 The Poacher Episode 1626th April 1958 Mike is nearly killed by a massive electrical jolt used by a poacher to kill fish in the Florida Everglades. 17 Girl in the Trunk Episode 173rd May 1958 Mike comes to the aid of a female escape artist when her underwater stunt goes awry. 18 The Sponge Divers Episode 1810th May 1958 Mike interrupts an underwater survey in the Gulf of Mexico in order to save a diver whose air line has become snarled. 19 Diamond River Episode 1917th May 1958 Mike supervises a diamond diving expedition in South America, but discovers that his employers are poaching on someone else's property. 20 Alligator Story Episode 2024th May 1958 A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park. 21 Magnetic Mine Episode 2131st May 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. 22 Underwater Patrol Episode 227th June 1958 The State of Florida hires Mike to organize and train an underwater police force to deal with a series of underwater crimes. 23 Legend of the Mermaid Episode 2314th June 1958 Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths. 24 Pressure Suit Episode 2421st June 1958 A professor and his daughter hire Mike to help them search for a rare underwater plant in Costa Rica. 25 The Prospectors Episode 2528th June 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. 26 The Hero Episode 265th July 1958 Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru. 27 Underwater Station Episode 2712th July 1958 Mike finds a famous rocket scientist being held in an underwater prison by enemy agents. 28 The Lost Ones Episode 2819th July 1958 A frustrated former athlete pushes his children to be Olympic swimmers, resulting in their becoming trapped in a cave by a rising tide. 29 Capture of the Santa Rosa Episode 2926th July 1958 Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers. 30 The Shipwreck Episode 302nd August 1958 Mike and three other survivors share a life raft after a storm capsizes their boats. 31 The Big Dive Episode 319th August 1958 Mike's work on a movie prompts a fellow stunt diver to attempt a dangerous record-setting dive. 32 The Birthday Present Episode 3216th August 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. 33 Dead Man's Cove Episode 3323rd August 1958 An underwater camera holds the key to determining whether a woman's drowning was accidental, as her husband claims, or not. 34 Explosion Episode 3430th August 1958 Mike is hired to destroy an underwater offshore peak that is notorious for ripping the hulls out of passing ships. 35 The Amphibian Episode 356th September 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. 36 Lord Christobal Episode 3613th September 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. 37 Decoy Episode 3720th September 1958 Mike investigates reports of a sea monster off the coast of Mexico. 38 The Sea Has Ears Episode 3827th September 1958 The murder of a telephone company employee leads Mike to an underwater cable that is being tapped to access top-secret research Conferences. 39 The Manganese Story Episode 394th October 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.