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S1 E4 Mark Of The Octopus

Thriller

TV-PG

26m

Jan 31, 1958

Before Mike Nelson can investigate the disappearance of two geologists, the sea washes one of them upon the beach. His body bears marks made by the suction valves of a giant octopus. Mike knows an octopus rarely attacks.

Season 1, 39 Episodes

Sixty Feet Below,

A jet plane suddenly goes out of control, plunging to the bottom of the sea. When ex-Navy frogman Mike Nelson dives to locate the wreck, he's amazed to find the pilot still alive, imprisoned in the watertight cockpit.

An explosion rocks a Wyoming coal mine, flooding the shafts and costing the lives of 30 miners. Deep in the shafts, Mike discovers two survivors trapped in an air pocket.

Rapture Of The Deep,

When deep sea divers go too deep or stay down too long, the resulting narcotic effect is called 'Rapture of the Deep.' When a party of skin divers falls victim to the 'rapture,' one of them becomes homicidal.

Mark Of The Octopus,

Before Mike Nelson can investigate the disappearance of two geologists, the sea washes one of them upon the beach. His body bears marks made by the suction valves of a giant octopus. Mike knows an octopus rarely attacks.

Mike Nelson rescues an unidentified girl from drowning. The Immigration Department suspects she's an illegal alien. The girl confesses she was towed into the country underwater in a sea sled operated by a ring of border runners.

Female Of The Species,

Lovely Kay Dalton, terrified of the sea, persists in skin-diving. Her objective is to recover a cache of stolen diamonds on the ocean floor. Although Mike Nelson warns that she will never conquer her fears, Kay refuses to quit.

Mr. Guinea Pig,

A pretty magazine photographer employs Mike Nelson to help her film a sunken barge off the coast of Mexico. Despite Mike's warnings, she gets trapped at the bottom of the sea.

Mike Nelson cruises to a small Mexican fishing village where he finds strange phenomena. Every fish in the vicinity seems to have disappeared. Mike uses the latest scientific 'miracles' to pierce the mystery of the disappearing fish.

When two ruthless treasure hunters dupe a young skin diver to help them loot a long-sunken ship, underwater investigator Mike Nelson foresees disaster. Mike braves the wrath of man and sea to save the lad from tragedy.

Cathy Morton, a U.S. Government undercover agent, and Mike Nelson search for a missing nose cone on the floor of the Caribbean. Unseen, three armed and dangerous foreign agents follow the expedition to capture the cone for their own government.

A savage killer whale blockades a strip of coastline, capsizing boats and harassing skin divers and swimmers. Mike Nelson, armed with a shark-harpoon gun, engages the killer whale in a wild and desperate undersea battle.

Midget Submarine,

A Red scientist defects to the West and comes to the U.S. Kidnapped by Communist agents. He is soon aboard a Pacific liner en route to Moscow. Mike Nelson drives a midget submarine through the shark-infested Pacific and storms the heavily-guarded liner.

The Shark Cage,

During a shark-filming expedition, Brent Marshall's flirtatious wife pays him no attention, concentrating instead on Mike Nelson and two camera operators. Enraged, Marshall severs a camera cage cable and drops his three 'rivals' into shark-filled waters.

A Smithsonian Institute professor employs Mike Nelson to salvage a German submarine sunk off the coast of South America. But two 'hard-hat' divers in conventional diving helmets and lead boots are after the same prize.

Continental Rift,

Lewis Hale tells Mike that he has invented a machine that locates sunken ships laden with gold. Mike discovers the machine is actually a stolen Top Secret U.S. Navy device and pitches into a life-or-death struggle with Hale to retrieve it.

On an underwater 'safari' in Florida's dense swamplands, Mike is suddenly gripped by a massive electric current and nearly loses his life. Recovering, he learns that a poacher is using electric shocks to kill all the fish in the area.

Girl In The Trunk,

A girl is placed in a straight jacket, securely locked in a trunk, and cast to the bottom of the ocean. It's all part of a carnival act, except she doesn't come up! Mike Nelson learns the secret of the act in time to save the girl from drowning.

The Sponge Divers,

Mike Nelson interrupts an underwater survey in the Gulf of Mexico to save a diver with a faulty air line.

Mike Nelson accepts a job to supervise a diamond diving expedition in South America but soon rebels when he learns his employers are poaching on somebody else's property.

Alligator Story,

Caesar, a vicious alligator, escapes from a wild animal show in Silver Springs, Florida, and takes refuge in the lake in a public park. Mike Nelson volunteers to match brain and brawn with the man-eater.

Mike Nelson learns of a derelict mine that has drifted into the harbor of a nearby town. The town's principal industry, a nitrate factory, will blow up and destroy the city if the mine explodes.

Underwater Patrol,

When the State of Florida is plagued with a series of underwater crimes, Mike Nelson is called to organize and train an underwater police force.

Legend Of The Mermaid,

Despite warnings from his friends, Mike Nelson dives to investigate an underwater grotto where–according to legend–a beautiful mermaid lures men to destruction. Mike fights for his life against the 'mermaid.'

Professor Auerbach and his daughter employ Mike Nelson to help them search for a rare underwater plant in Costa Rica. Angry Costa Ricans attack the party just as the professor falls victim to the bends.

Playboy sportsman Elliot Conway and his wife Gloria employ Mike Nelson to teach them skin-diving and guide their underwater 'safari' for sharks in the waters off Peru. Mike fights a school of hungry sea beasts to save the lives of his 'pupils.'

The Prospectors,

Two prospectors find a radioactive fish in Florida. Convinced that the fish will lead them to a rich underwater uranium deposit, they employ Mike Nelson to track it with a Geiger counter.

Underwater Station,

Mike Nelson observes three men entering a strange chamber deep in the ocean. When only two men surface, Mike investigates and learns the remaining man is a famous missile expert held prisoner by enemy agents.

Athlete Dave Crane pushes two children to be future Olympic swimmers. But when rising tides trap the children in an underwater cave, Dave is powerless to help them. Mike races the tide to reach the children and get them out.

Capture Of The Santa Rosa,

When a Latin American diplomat and his family are kidnapped, the authorities hesitate to act lest the captives are killed. Mike Nelson and two hastily trained divers use sea scooters to free the captives.

Mike Nelson is surveying underwater currents off California's coast when an unexpected storm capsizes his boat and many others. Mike pits his strength against the terrible rigors of the open sea.

A stuntman trying to break the world's skin diving record falls victim to the numbing cold and unbearable sea pressures. Mike Nelson descends to a greater depth than ever before to rescue the reckless actor.

Birthday Present,

After exploring the waters around a harbor pier, Mike Nelson is jumped by a gang of hoodlums and blackjacked. Recovered, Mike returns to the scene, determined to find out why he was beaten.

Dead Man's Cove,

Skin-diving fans Robert and Maria Tyler explore the sea with an underwater camera. But only Mr. Tyler returns. Mike Nelson uses an underwater photograph to test the truth of Tyler's story.

Killer Rock is an underwater off-shore peak that tears the hulls of passing ships like paper. Mike, armed with dangerously unstable explosives, fights ocean currents and an attack by an electric ray to fulfill his job.

Six sportsmen rent an amphibian plane to fly them to a skin-diving site. When one of the divers, using a Sea Scooter, mysteriously disappears, Mike searches and finds him–photographing secret Navy installations!

Lord Christobal,

The Caribe Insurance Company sends Mike to the West Indies to investigate the sinking of a freighter. On arrival, Mike finds a shipping executive murdered, a grim warning someone doesn't want Mike to investigate!

Two Mexican fishermen show Mike a net with an odd hole in it and claim an unknown species of sea monster caused it. Mike, using whale-tracking equipment and underwater microphones, risks his life to track and trap the 'monster.'

The Sea Has Ears,

Investigating the death of a telephone company employee, Mike Nelson discovers an underwater cable has been tapped–and the culprit is eavesdropping on top-secret research conferences.

The Manganese Story,

Fighting sharks and an approaching hurricane, Mike Nelson and a young geologist discover a field of pure manganese–a vital metal to national defense–on the ocean floor. The geologist tries to kill Mike Nelson and claim the discovery as his own.

Details

Sea Hunt

Thriller

TV-PG

2 Seasons

26m

Ex-navy Underwater Demolition Team Officer Mike Nelson continues his skin-diving as a postwar profession, combining mastery of the SCUBA and spear with a flair for dangerous investigation.

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