Mark of the Octopus

February 1, 1958

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Sea Hunt - S1 - E4

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.

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Sea Hunt: Season 1 - 39 Episode s

1x1 - Sixty Feet Below
January 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.
1x2 - Flooded Mine
January 11, 1958
While investigating the cause of a mine flood that killed thirty men, Mike stumbles upon an air pocket with two survivors.
1x3 - Rapture of the Deep
January 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.
1x4 - Mark of the Octopus
February 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.
1x5 - The Sea Sled
February 8, 1958
Mike helps the Immigration Department Border Patrol break up an underwater border-running operation.
1x6 - Female of the Species
February 15, 1958
A beautiful woman hires Mike to give her diving lessons for mysterious reasons.
1x7 - Mr. Guinea Pig
February 22, 1958
An attractive magazine photographer hires Mike to assist her in getting pictures of a sunken barge off the coast of Mexico.
1x8 - Sonar Queen
March 1, 1958
Hired to test a new electronic fish-finder, Mike encounters a village where every fish in the vicinity has disappeared.
1x9 - Gold Below
March 8, 1958
A pair of ruthless treasure hunters dupes a young skin diver into helping them loot a sunken ship.
1x10 - Recovery
March 15, 1958
Mike dives into the Caribbean to recover the lost nose cone from an ICBM rocket before enemy agents can get it.
1x11 - Killer Whale
March 22, 1958
A killer whale is capsizing boats and endangering scuba divers and swimmers along a stretch of coastline.
1x12 - Midget Submarine
March 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.
1x13 - The Shark Cage
April 5, 1958
Mike and two cameramen are imperiled when an irrationally jealous man drops their camera cage into shark-infested waters.
1x14 - Hardhat
April 12, 1958
Mike competes with a pair of helmet divers to salvage a German submarine sunk off the coast of South America.
1x15 - Continental Rift
April 19, 1958
A man claims to have invented a machine that can locate ships carrying gold.
1x16 - The Poacher
April 26, 1958
Mike is nearly killed by a massive electrical jolt used by a poacher to kill fish in the Florida Everglades.
1x17 - Girl in the Trunk
May 3, 1958
Mike comes to the aid of a female escape artist when her underwater stunt goes awry.
1x18 - 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.
1x19 - 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.
1x20 - Alligator Story
May 24, 1958
A vicious alligator escapes from a wild animal show and takes refuge in the lake of a public park.
1x21 - 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.
1x22 - Underwater Patrol
June 7, 1958
The State of Florida hires Mike to organize and train an underwater police force to deal with a series of underwater crimes.
1x23 - Legend of the Mermaid
June 14, 1958
Mike investigates an underwater grotto said to feature a mermaid that lures men to their deaths.
1x24 - Pressure Suit
June 21, 1958
A professor and his daughter hire Mike to help them search for a rare underwater plant in Costa Rica.
1x25 - The Prospectors
June 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.
1x26 - The Hero
July 5, 1958
Mike is hired by a playboy sportsman to supervise their underwater shark ""safari"" in the waters off Peru.
1x27 - Underwater Station
July 12, 1958
Mike finds a famous rocket scientist being held in an underwater prison by enemy agents.
1x28 - The Lost Ones
July 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.
1x29 - Capture of the Santa Rosa
July 26, 1958
Mike leads a diving team in rescuing a Latin American diplomat and his family from kidnappers.
1x30 - The Shipwreck
August 2, 1958
Mike and three other survivors share a life raft after a storm capsizes their boats.
1x31 - The Big Dive
August 9, 1958
Mike's work on a movie prompts a fellow stunt diver to attempt a dangerous record-setting dive.
1x32 - The Birthday Present
August 16, 1958
After locating a leak in a gas line and retrieving a young boy's sunken bicycle, Mike is beaten up and threatened by a gang of thugs.
1x33 - Dead Man's Cove
August 23, 1958
An underwater camera holds the key to determining whether a woman's drowning was accidental, as her husband claims, or not.
1x34 - Explosion
August 30, 1958
Mike is hired to destroy an underwater offshore peak that is notorious for ripping the hulls out of passing ships.
1x35 - The Amphibian
September 6, 1958
A group of sportsmen hire Mike to supervise their skin-diving outing, whereupon one of them sneaks off and begins photographing secret Navy facilities.
1x36 - Lord Christobal
September 13, 1958
Mike is hired by an insurance company to investigate the sinking of a freighter, but a murder indicates that someone doesn't want him to complete his task.
1x37 - Decoy
September 20, 1958
Mike investigates reports of a sea monster off the coast of Mexico.
1x38 - The Sea Has Ears
September 27, 1958
The murder of a telephone company employee leads Mike to an underwater cable that is being tapped to access top-secret research Conferences.
1x39 - The Manganese Story
October 4, 1958
Mike discovers an important manganese deposit, but an ambitious young geologist, sharks, and an approaching hurricane threaten to silence him before he can inform the government.

1x1 - Sixty Feet Below

1x2 - Flooded Mine

1x3 - Rapture of the Deep

1x4 - Mark of the Octopus

1x5 - The Sea Sled

1x6 - Female of the Species

1x7 - Mr. Guinea Pig

1x8 - Sonar Queen

1x9 - Gold Below

1x10 - Recovery

1x11 - Killer Whale

1x12 - Midget Submarine

1x13 - The Shark Cage

1x14 - Hardhat

1x15 - Continental Rift

1x16 - The Poacher

1x17 - Girl in the Trunk

1x18 - The Sponge Divers

1x19 - Diamond River

1x20 - Alligator Story

1x21 - Magnetic Mine

1x22 - Underwater Patrol

1x23 - Legend of the Mermaid

1x24 - Pressure Suit

1x25 - The Prospectors

1x26 - The Hero

1x27 - Underwater Station

1x28 - The Lost Ones

1x29 - Capture of the Santa Rosa

1x30 - The Shipwreck

1x31 - The Big Dive

1x32 - The Birthday Present

1x33 - Dead Man's Cove

1x34 - Explosion

1x35 - The Amphibian

1x36 - Lord Christobal

1x37 - Decoy

1x38 - The Sea Has Ears

1x39 - The Manganese Story

S1: Season 1

S2: Season 2

S3: Season 3

S4: Season 4