Mike is trapped in a ""scubasphere"" when the cable attached to it snaps. Air Date : 7th-Jan-1961  Read More

While surveying a remote river in the South American jungle, Mike is threatened by the jealousy of a man prospecting for emeralds with his wife. Air Date : 14th-Jan-1961  Read More

Mike investigates the source of a radar jamming signal that caused two ships to collide. Air Date : 21st-Jan-1961  Read More

A famous newsman, convinced that he has a fatal illness, tries to end his life in such a way that his wife can collect his insurance, with Mike as a witness. Air Date : 28th-Jan-1961  Read More

A scuba diving ballerina faces the possibility of underwater amputation when she catches her foot between the buckled plates of a sunken freighter. Air Date : 4th-Feb-1961  Read More

After being accidentally caught in a fishing net, Mike challenges an Asiatic warlord by trying to retrieve a cache of medical supplies that the dictator has dumped into a river. Air Date : 11th-Feb-1961  Read More

Unaware that two of his treasure-hunting friends are trapped inside, Mike sets charges to blow up a sunken ship that is a menace to a busy shipping lane. Air Date : 18th-Feb-1961  Read More

Mike scouts a path through mine-infested waters so that medical supplies can reach a China Sea port hit by a cholera epidemic. Air Date : 25th-Feb-1961  Read More

Mike's efforts to retrieve a pair of radioactive cylinders are complicated by the presence of a headstrong youth to whom he's been giving diving lessons. Air Date : 4th-Mar-1961  Read More

Mike uses sonar to foil a gang of underwater heroin smugglers. Air Date : 11th-Mar-1961  Read More

A young Mexican boy helps Mike locate a safe entrance to an underwater fossil cave. Air Date : 18th-Mar-1961  Read More

Mike faces sharks and other unexpected difficulties while working with three pretty women undergoing astronaut training. Air Date : 25th-Mar-1961  Read More

Mike is hired by a local German consul to salvage a survival kit from the wreckage of a Nazi warplane in the Caribbean. Air Date : 1st-Apr-1961  Read More

While helping his former history professor search for pirate treasure off the North Carolina coast, Mike finds evidence that the underwater cave said to house the treasure has been tampered with. Air Date : 8th-Apr-1961  Read More

Mike convinces a reluctant daughter to continue her father's work after he is killed testing an underwater electrical detection device. Air Date : 15th-Apr-1961  Read More

A man bribes Mike to continue giving lessons to an inept diving student whom he's stopped teaching. Air Date : 22nd-Apr-1961  Read More

Mike heads a three-man team in an effort to disarm a pair of unexploded torpedoes at the bototm of a West Coast harbor. Air Date : 29th-Apr-1961  Read More

A restless youth and a college girl complicate Mike's attempts at capturing a poisonous lionfish. Air Date : 6th-May-1961  Read More

A heroic test pilot from the Korean War has his mettle tested when he must spend 24 hours with Mike in a makeshift decompression chamber after a dive to prevent the bends from killing him. Air Date : 13th-May-1961  Read More

Markings on the body of a dead diver convince a marine biologist that a tropical lagoon is inhabited by a killer octopus. Air Date : 20th-May-1961  Read More

One salvage diver disappears while diving on a sunken yacht off the coast of Yucatan, and Mike tries to see that two others don't share his fate. Air Date : 27th-May-1961  Read More

Mike teams up with a Mexican prison escapee to uncover nefarious activity on an uncharted Pacific atoll off the coast of South America. Air Date : 3rd-Jun-1961  Read More

Mike must get past Jivaro Indians who are blocking his passage downriver as he attempts to get a young missionary's baby to a hospital for medical attention. Air Date : 10th-Jun-1961  Read More

Mike poses as a tourist on vacation as he tries to locate a hidden underwater missile launcher in the Caribbean. Air Date : 17th-Jun-1961  Read More

Pirates try to snatch a sunken freighter away from Mike before he can salvage it for an old Navy buddy. Air Date : 24th-Jun-1961  Read More

While working for the U.S. Treasury to break a counterfeiting ring, Mike intercedes in a kidnapping. Air Date : 1st-Jul-1961  Read More

A pretty woman and her father, vacationing in the Bahamas, become killers after inadvertently eating a variety of fish that causes hallucinations. Air Date : 8th-Jul-1961  Read More

A sunken truck points Mike to the murder of a political boss, and the killer is the father of a good friend of Mike's. Air Date : 15th-Jul-1961  Read More

Mike goes after an egocentric movie star who injured a friend of Mike's in a hit-and-fun speedboat accident. Air Date : 22nd-Jul-1961  Read More

While searching a Latin American harbor for a sunken statue, Mike discovers a UHF homing beacon being used to guide submarines into the port. Air Date : 29th-Jul-1961  Read More

A dead ringer for Mike is stealing diamonds from a sunken sports cruiser, but when Mike is accused of the crime, he is unable to establish an alibi due to his current top-secret mission. Air Date : 5th-Aug-1961  Read More