Mike attempts a risky rescue of a young criminal trapped in a storm drain. ...

Sabbateurs have rigged a sunken ship with 50 tons of dynamite, and it's Mike's job to diffuse the monstrous time-bomb before it blows up an entire foreign nation's capita ...

Mike investigates a mysterious signal emanating from the ocean's floor. ...

Mike Nelson decides to teach two shark-killing juvenile delinquents a lesson - in catching a live shark. ...

The US Coast Guard enlists Mike's help in determining the cause of sabotage to the radar of the coastal warning system. ...

Mike takes on a dangerous spy mission while vacationing in the Caribbean. ...

While performing experimental underwater research utilizing infra-red light, a diver goes missing. ...

After a mysterious radioactive object crashes into the ocean floor, Mike must dive to discover just what it is. ...

Mike becomes suspicious of his employer, whom has hired him to search a three-century-old sunken Spanish galleon. ...

Mike investigates the wreck of a sunken Navy ship. ...

Mike searches underwater for a missing female scientist friend. ...

Mike attempts a risky rescue of a young girl trapped inside an underwater mine. ...

Mike travels deep into the jungle areas of a small Latin-American country in search of a sacred pool of water and its secrets held within. ...

Things go terribly wrong for Mike, while he is involved in planting underwater explosives in the ocean's floor. ...

Mike joins a diving expedition in search of a prehistoric fish thought to be extinct for millions of years. ...

Mike races against time to rescue a 12-year-old boy trapped in an underwater grotto, rigged with explosives. ...

Mike gets involved with helping foreign revolutionaries overthrow their dictator. ...

When a dictator visiting the United States decides to land at a small harbor with almost no advance notice, Mike is called in by the Coast Guard for an underwater securit ...

A thief endangers lives to secure a fortune in gems buried in the safe of a sunken ship. ...

While on patrol with the U.S. Coast Guard Auxiliary, Mike becomes entangled with an exiled crime boss, who is trying to slip back into the country. ...

Mike rescues a girl diver who is trying to trace the origin of a jade statue she owns. He joins the search and is rewarded with an attack on his life. ...

Mike tangles with enemy frogmen, while participating in a US Navy inspection of an underwater camera cable. ...

Mike's vacation in The Bahamas is interrupted by the US Secret Service. They need him to search for two-million counterfeit dollars stashed at the bottom of the ocean. ...

Mike's assignment: Retrieve a deadly radioactive capsule and restore it to a lead container without exposing himself to gamma radiation that could take his life. ...

Mike helps the US Coast Guard in trapping enemy agents that are dropping microfilm canisters in an underwater cave. ...

Mike takes command of the first underwater flotilla of the United States Coast Guard Auxillary in search of sunken radioactive cargo. ...

With the use of an underwater camera fitted with a periscope lens, Mike helps agents round up members of an organized crime syndicate. ...

Mike battles a murderous style pirate, while working in the Bahamas as an underwater photographer for a famous bathing suit designer. ...

Mike takes on the dangerous task of rescuing a political refugee, who is in an embassy and hiding from a Latin American dictator. ...

A deep sea fisherman and his son arm and plant a World War II mine in an attempt to destroy a kelp harvester. ...

Mike attempts to rescue a couple inexperienced divers from the deep. ...

Mike attempts to free a salvage diver trapped under a tremendously heavy piece of deck cargo. ...