Marine Boy, suspecting sabotage, investigates when an "unsinkable" nuclear ship is lost during a tornado.
A great underwater oil field is discovered by Dr. Mariner, but while drilling, the team at Satellite Station 23 collapses and Marine Boy is sent to investigate.
Marine Boy, Bulllton and Piper are ordered to the fishing boat Whoppercatch to investigate an SOS regarding a sea monster.
After arriving at the crash site of an unidentified aircraft, P-1 witnesses an explosion and find themselves surrounded by huge, electronically controlled, poisonous starfish.
Bullton and Piper find a missing fishing boat with no one aboard. Marine Boy and Splasher set out to solve the mystery of the crew's whereabouts.
During an expedition organized by Ocean Patrol, Dr. Mariner and his crew find a spear which is modelled after one known to be thousands of years old.
In order to provide more food to the people of the world, Dr. Mariner experiments with raising larger fish, but it is missing one ingredient which can only be found in the deepest part of the ocean.
Marine Boy, Bullton, and Piper are sent to the Arctic Ocean to search for 11 missing men and to explore the myth of a ghost ship.
Marine Boy answers an SOS and finds no ship in the area of the signal. What he does find, however, is electronically controlled artificial seaweed.
Marine Boy enters a kind of submarine Grand Prix using a special boat invented by Dr. Mariner and Professor Fumble, but the sub is blown up before the race finishes.
A strange statue which contains vast treasure is discovered by tycoon Mr. Goldpocket while flying over it in his plane.
Mr. Smirch steals nuclear rock drills in order to obtain uranium enough to take over the oceans of the world.
A mysterious time capsule is found by Marine Boy and Splasher who take it to Dr. Mariner.
Flim Flamboyant disguises his sub as the P-1 and leads ships to a cave where he steals their precious cargo.
A proton bomb with its safety catch unhooked is stolen by a secret agent.
Splasher is caught in the sound waves emitted by Scorpo, who plans to sell the dolphins of the world to Smirkoland for use as robots.
Marine Boy and Splasher stumble on an underwater farm where plants grow quickly due to the rich soil.
Dr. Shinedor has invented an electronic laser beam which he can use to shock and punish man for hunting and fishing for pleasure.
Despo Montebank, who claims to be the Emperor of the Pacific Empire, holds Marine Boy and his crew captive in an electromagnetic field and tries to make them obey him.
Marine Boy leaves the P-1 to search for the wreckage of a ship sunk by Captain Rex Rancid's electronic missiles.
Marine Boy and P-1 are sent to investigate the disappearance of ships at the North Pole, apparently due to icebergs.
While testing the electronic fence at the Ocean Patrol underwater research ranch, Professor Fumble and Mr. Washer are captured and held on an invisible ship.
Accidents continue to occur in an underwater power station which is under construction, and Marine Boy discovers tremendous currents which he feels are man-made.
Little Clicli sees a submarine attack a diamond-bearing ship and picks up the key after the captain of the ship throws it overboard to keep it from thieves.
In leading an important cargo ship through the narrow strait, P-1 must use torpedoes to clear the way.
A lighthouse beam changes course mysteriously and ships in the area are running around as a result.
P-1, along with Bullton and Piper, is reported missing and Marine Boy and Splasher go search for them, finding them in a cave being held prisoners of Hambone and Skwid.
The villains X-3 and Professor Stormbrane are planning to set off a super bomb inside a volcano and send out Shell boats to attack the SS Rubadubdub.
Marine Boy and the P-1 encounter synthetic jelly monsters which attack a secret airship whose torpedoes only make them multiply and grow larger.
Marine Boy and Dr. Mariner set up a trap to catch pirates who sink ships and steal the cargo. After Dr. Mariner is caught, the villains give Ocean Patrol 24 hours to surrender their base in return for Dr. Mariner's freedom.
Marine Boy and his racer, Carrier Fish, are trapped by robot sea spiders who spin webs and encircle them.
Thieves capture Hugh Highstep, the ballet instructor, and the dolphin ballerina, Twinklefin, after the dolphin accidentally takes a miniature bomb that Squidink wants for himself.
Four wacky scientists kidnap Professor Fumble in an attempt to learn the formulae for Ocean Patrol's many weapons, especially Marine Boy's special suit.
A gangster group is holding a secret convention in an underwater strait and is being trained by Professor Beelzebub to steal an electronic brain which is being delivered to Ocean Patrol headquarters.
Rustlers steal the whales from Texboy's deep sea ranch.
Robots controlled by Mr Fuddidudder are stealing from stores and ships, and Ocean Patrol thinks the Gold Grabber Gang is really at the bottom of the trouble.
During an Ocean Patrol Rodeo, Bullton finds himself riding the back of a monster shark breathing fire - it's one of Count Shark's monsters for use in an attempt to take over Ocean Patrol headquarters.
Marine Boy and the P-1 are sent by Dr. Mariner to capture a prehistoric sea monster. Along the way they encounter a fortune teller and a gangster.
Marine Boy and the P-1 set out to search for a microfilm which has been hidden in a potato.
Professor Dazzle loses his dazzling pendant during his performance at the circus. When Bullton finds the pendant, Flip Flimflam's men kidnap him thinking he is Professor Dazzle.
A sea dragon is wounded by a movie crew which is trying to film it. Ocean Patrol is ordered to destroy it.
Marine Boy's wrist radio is removed by a playful baby dolphin and he cannot hear Bullton and Piper call for help.
Dr. Mum is captured on a submarine and forced by Mr. Robbinsteel to build an electronic brain. Marine Boy rescues Dr. Mum, the submarine is blown up, but the brain is still intact.
Jesse Jamison and his men take over a train which is carrying a shipment of rubies on the Underwater Railroad.
Professor Fumble invents a mini-electronic translator for Splasher to use in order to speak with humans.
Two ships collide in a fog and the nuclear-powered ship is robbed of its nuclear fuel.
Men disguised as Ocean Patrol members enter an underground fort in an attempt to steal gold, and all persons in the fort are held captive by them.
Captain Kiddo and his pirate ship discover a castle filled with treasure and guarded by a sea lion on the ocean floor.
Clicli discovers a ship which sends out a roll of microfilm and shows it to Marine Boy. The film shows Miniprof's microwave machine that can shrink anything.
Jim Sumorbond tries to steal Professor Fumble's special ultra-freezer. The getaway truck crashes into the ocean, and the freezer in the back causes huge ice masses to form.
A storm causes an oil tanker to spill oil in the sea, jeopardising the fish. Octane builds a spill-proof Tubsub Tanker Sub.
When the evil Despotic invents a super electronic brain called Tremendo, he plans a world conquest.
A supposedly haunted island is under the domination of the mysterious Captain Wraith.
Marine Boy faces the greatest challenge of his career in the Ocean Patrol when a ship, the ghost of a heavy cruiser, haunts the seas. Wherever it appears, there is a disaster that follows.
Guppy, an enormous pet whale, is kidnapped by Cuthbert Tuthsum, a butler with ambitions toward evil.
Dr. Bulthrod's plane, carrying precious specimens of a rare plankton, is shot down. The plankton escapes into the sea where it grows and threatens to engulf the entire Earth.
When Professor Puddin builds his complex for extracting gold from sea water, the infamous Dr. Al Kemy devises an evil plan.
When Professor Fumble invents a robot that makes diamonds out of coal, the evil Mr. Carbona sees his chance to control the world's economy.
Professor Fumble's greatest invention, a weather observation rocket, is stolen by the notorious Lard Greedfat.
Suddenly, an army of red dolphins threatens the ocean depths. Their goal is the destruction of the Ocean Patrol.
Professor Fumble invents a fabulous new robot, but evil forces build an army of the robots.
When a mysterious treasure map falls into the hands of the Ocean Patrol, the crew of P-1 and Marine Boy sail for the Island of Treasure.
Flim Flamboyant schemes to becomes a billionaire by robbing the underwater oil pipeline.
The ultrasonic voices of Splasher and his friends awaken a dangerous monster plant which has been sleeping for millions of years.
A cruise ship carrying Professor Fumble and the world's greatest scientists disappears without a trace.
The powerful pirate, Captain Kiddo, is challenged by the Queen of Pirates to see if he can defeat Marine Boy.
An Ocean Patrol boat is found with the crew missing. The search takes Marine Boy to a strange and forbidding land, the land of ancient Vikings, where today they are living under the domination of a cruel queen.
When huge mysterious icebergs appear in the Tropical Sea, the Ocean Patrol is alerted.
Jocko Nape builds a tank equipped with a hyper Uranium bomb which he plans to set off in the middle of the ocean, thereby creating tidal waves big enough to destroy whole cities.
Captain Aquarius has captured some unusual sea creatures for his underwater zoo. In the deepest part of the ocean lives Zeoclode, avenger of the sea, who tries to rescue his friends.
Professor Ike Conoclast has perfected a secret formula for a new secret weapon, but when it is about to be stolen from him he hides each half of the formula in a different place.
When a castaway whom Marine Boy rescues tells him of a fabulous growth of seaweed, they set off together to find the fantastic plant.
Marine Boy is blinded temporarily by a flash of light which a gang of criminals is using to escape detection of their crimes.
The Brainstorm, a super electronic computer, suddenly becomes so powerful that it can control not only machines but men's minds.
Piper is captured by the fiendish Dr. Diablo. Diablo plans to save mankind from a future flood by installing gills in their bodies so they can live underwater.
Two master criminals escape from an underwater prison farm and use the P-1 as their getaway boat with Bullton and Piper as hostages.
Suddenly, the desert is flooded with sea water. Ocean Patrol believes that someone is illegally mining uranium beneath the desert.
Yoshiko Ohta
Marine Boy
Gorō Naya
Dr. Mariner
Kazuko Sugiyama
Princess Kameriya
Tadashi Nakamura
Faamu
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