Sea Hunt
Mike Nelson is a S.C.U.B.A. diver in the days when it was still very new. He works alone, and the plot was mostly carried through his voice-over narrations. These gave the show a flavor of a radio program. Typical adventures were finding a downed satellite or sunken treasure.
Cast:Lloyd Bridges , Ken Drake , Courtney Brown , Jan Harrison , William Boyett , Richard Probert , Russ Conway , Leonard Nimoy , Frank Warren , Zale Parry , John Zaremba , Ross Elliott , A.G. Vitanza , Anthony George , Lisa Gaye , Rodolfo Hoyos Jr. , Ric Marlow , Charles Maxwell
S4.E1 ∙ Point of No Return
As part of a research project, Mike Nelson attempts to spend three days underwater at a depth of 250 feet in a pressure chamber dubbed Scubasphere. A tropical storm pops up, and both the cable and telephone connections attached to the Coast Guard ship above are severed. To make matters worse, the ship heads for safer waters without realizing that Mike has lost his connection to them.
S4.E2 ∙ River Treasure
While in a South American jungle, Mike tangles with a jealous treasure hunter.
S4.E3 ∙ The Destroyers
Mike investigates the mysterious collision of two Navy destroyers.
S4.E4 ∙ Vital Error
Mike's normally level-headed skindiving buddy begins to exhibit peculiar behavior.
S4.E5 ∙ The Dancer
Mike desperately tries to save the life and limb of a popular dancer whose leg is hopelessly pinned in wreckage 90 feet below the surface.
S4.E6 ∙ Sperling of Lamatsue
Mike tries to recover valuable medical supplies that an Asiatic warlord has dumped into the river.
S4.E7 ∙ Rescue
Mike must dive to rescue a friend trapped in a sunken wreck, with just minutes left until explosive charges are set to blow it to pieces.
S4.E8 ∙ Mercy Ship
Mike risks his life in order to sneak badly needed medical supplies through a dictator's mine-infested blockade.
S4.E9 ∙ Hot Tracer
Problems arise as Mike attempts to retrieve a pair of radioactive cylinders leaking dangerous amounts of radiation underwater.
S4.E10 ∙ Sonar Story
Using sonar equipment on his boat, Mike tracks heroin smugglers.
S4.E11 ∙ Amigo
Mike travels to Mexico in search of underwater fossils in an inaccessible cave.
S4.E12 ∙ The Aquanettes
Mike takes part in a special program known as Operation Astronette. His job is to train three female astronauts in underwater survival skills.
S4.E13 ∙ Survival Kit
Mike attempts to salvage a survival kit from a German fighter plane shot down during World War II.
S4.E14 ∙ Expedition
Professor Halliday wants more money to carry on his underwater exploration.
S4.E15 ∙ Bionics
An inventor dies while testing a new underwater detection device.
S4.E16 ∙ The Defector
Mike tells an inept skin-diving pupil that there's no point in continuing his lessons.
S4.E17 ∙ Niko
Mike attempts to diffuse two sunken torpedoes, as well as diffusing the racial tensions between the Japanese and American members of his 3-man team.
S4.E18 ∙ Cougar
Mike and a young man, whom he had helped rehabilitate when he was a juvenile delinquent, fly to Hawaii to hunt for lionfish, one of the most venomous fish on the ocean floor.
S4.E19 ∙ Sub Hatch
Mike and his partner fight the bends, as they endure a long recovery process in a submarine's escape trunk.
S4.E20 ∙ The Octopus Story
Mike and his diving team are attacked by a violent new breed of octopus.
S4.E21 ∙ Quicksand
While searching for a sunken wreck, Mike's hard hat diving partner disappears, leaving nothing behind but his torn air hose attached to their boat on the surface.
S4.E22 ∙ Lost Island
While on a covert mission for the U.S. Government, Mike discovers a few unsavory inhabitants on what was supposedly a deserted island.
S4.E23 ∙ Baby
While in the dangerous jungles of Ecuador, Mike takes desperate measures to save the life of his very ill infant godson.
S4.E24 ∙ Confidential Mission
Mike travels undercover to the Caribbean Coast on a secret mission for the United States Government.
S4.E25 ∙ Underwater Pirates
It's a battle of wits, as Mike tries to outsmart pirates intent on hijacking the cargo of a sunken wreck that he found.
S4.E27 ∙ Dark Evil
While Mike is in Nassau on a salvage job, two of his friends catch and eat a strangely poisonous fish for breakfast, which causes severe hallucinations that trigger suicidal and homicidal tendencies.
S4.E28 ∙ Sunken Car
After being falsely arrested for diving in a bay, Mike sets out to solve a murder mystery.
S4.E29 ∙ Hit and Run
A female diving friend of Mike's is hospitalized with severe injuries sustained by a hit-and-run speedboat piloted by a popular movie star.
S4.E30 ∙ The Saint Story
Mike is recruited to rescue the statue of a Saint who falls off a ship into the sea. The locals believe this is the cause of many problems in the area including the poor fishing.
S4.E31 ∙ Imposter
Mike is suspected of insurance fraud, after an impostor steals a valuable necklace.
S4.E32 ∙ Superman
Mike is invited to join a longtime friend and her workaholic husband on their expedition to explore an Aztec ceremonial pool on an uninhabited island located 15 miles off the coast of Mexico. Mike's friend unwittingly puts her husband's life in jeopardy, when she deliberately strands the trio on the island.
S4.E33 ∙ Roustabout
A South American city's water supply is threatened by a drum of poison from an overturned truck.
S4.E34 ∙ P.T. Boat
While vacationing in Nassau, Bahamas, Mike meets an eccentric multi-millionaire inventor and his sister. He helps the man experiment with an underwater remote control device used to guide boats.
S4.E35 ∙ Starting Signal
Mike battles underwater saboteurs, as he assists the US Navy with underwater sound travel experiments.
S4.E36 ∙ Skipper
Mike investigates the ramming of a Coast Guard boat by a hydroplane piloted by a friend of his during a race.
S4.E37 ∙ Crime at Sea
Mike Nelson sets out to prove that the death at sea of a friend's father was the result of murder.
S4.E38 ∙ Round Up
Underwater explosives threaten to make this Mike Nelson's final dive.
