Season 1

E1. Sixty Feet Below

Jan 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.

E2. Flooded Mine

Jan 11, 1958

While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors.

E3. Rapture of the Deep

Jan 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.

E4. Mark of the Octopus

Feb 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.

E5. The Sea Sled

Feb 8, 1958

Mike helps the Immigration Department Border Patrol break up an underwater border-running operation.

E6. Female of the Species

Feb 15, 1958

A beautiful woman hires Mike to give her diving lessons for mysterious reasons.

E7. Mr. Guinea Pig

Feb 22, 1958

An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico.

E8. Sonar Queen

Mar 1, 1958

Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared.

E9. Gold Below

Mar 8, 1958

A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship.

E10. Recovery

Mar 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

Mar 22, 1958

A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline.

E12. Midget Submarine

Mar 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

Apr 5, 1958

Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters.

E14. Hardhat

Apr 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

Apr 19, 1958

A man claims to have invented a machine that can locate ships carrying gold.

E16. The Poacher

Apr 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

May 3, 1958

Mike comes to the aid of a female escape artist when her underwater stunt goes awry.

E18. The Sponge Divers

May 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

May 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

May 24, 1958

A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park.

E21. Magnetic Mine

May 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

Jun 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

Jun 14, 1958

Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths.

E24. Pressure Suit

Jun 21, 1958

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

E25. The Prospectors

Jun 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

Jul 5, 1958

Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru.

E27. Underwater Station

Jul 12, 1958

Mike finds a famous rocket scientist being held in an underwater prison by enemy agents.

E28. The Lost Ones

Jul 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

Jul 26, 1958

Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers.

E30. The Shipwreck

Aug 2, 1958

Mike and three other survivors share a life raft after a storm capsizes their boats.