Episode 1
The Green Monster
30m
Marine Boy, suspecting sabotage, investigates when an "unsinkable" nuclear ship is lost during a tornado.
Where to watch Marine Boy
TV series
Marine Boy
1966NR1 season4.9 / 10
Marine Boy was one of the first color anime cartoons to be shown in a dubbed form in the U.S., and later in Australia and the United Kingdom. It was originally produced in Japan as Undersea Boy Marine by Minoru Adachi and animation company Japan Tele-Cartoons. It was sold outside of Japan via K. Fujita Associates Inc., with Warner Bros / Seven Arts Television handling worldwide distribution of the English-language version.
Availability
Not streaming in United States
Checked Jul 22, 2026
Marine Boy premiered October 6, 1966. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Marine Boy was one of the first color anime cartoons to be shown in a dubbed form in the U.S., and later in Australia and the United Kingdom. It was originally produced in Japan as Undersea Boy Marine by Minoru Adachi and animation company Japan Tele-Cartoons. It was sold outside of Japan via K. Fujita Associates Inc., with Warner Bros / Seven Arts Television handling worldwide distribution of the English-language version.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Danger At 300 Fathoms
30m
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.
Where to watch Marine BoyEpisode 3
Monsters Of The Deep
30m
Marine Boy, Bulllton and Piper are ordered to the fishing boat Whoppercatch to investigate an SOS regarding a sea monster.
Where to watch Marine BoyEpisode 4
Dangerous Starfish
30m
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.
Where to watch Marine BoyEpisode 5
The Astounding Shellfish
30m
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.
Where to watch Marine BoyEpisode 6
The Mysterious Paradise
30m
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.
Where to watch Marine BoyEpisode 7
Deepest Of The Deep
30m
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.
Where to watch Marine BoyEpisode 8
The Ghost Ship
30m
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.
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The Monstrous Seaweed
30m
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.
Where to watch Marine BoyEpisode 10
The Super Mystery Boat
30m
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.
Where to watch Marine BoyEpisode 11
The Greatest Power On Earth
30m
A strange statue which contains vast treasure is discovered by tycoon Mr. Goldpocket while flying over it in his plane.
Where to watch Marine BoyEpisode 12
Disaster On The High Sea
30m
Mr. Smirch steals nuclear rock drills in order to obtain uranium enough to take over the oceans of the world.
Where to watch Marine BoyEpisode 13
Secret Of The Time Capsule
30m
A mysterious time capsule is found by Marine Boy and Splasher who take it to Dr. Mariner.
Where to watch Marine BoyEpisode 14
Mystery Of The Missing Vessels
30m
Flim Flamboyant disguises his sub as the P-1 and leads ships to a cave where he steals their precious cargo.
Where to watch Marine BoyEpisode 15
Menace Of The Missing Bomb
30m
A proton bomb with its safety catch unhooked is stolen by a secret agent.
Where to watch Marine BoyEpisode 16
Danger In The Depths
30m
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.
Where to watch Marine BoyEpisode 17
The Gigantic Sea Farm
30m
Marine Boy and Splasher stumble on an underwater farm where plants grow quickly due to the rich soil.
Where to watch Marine BoyEpisode 18
Terror Of The Fire Ball
30m
Dr. Shinedor has invented an electronic laser beam which he can use to shock and punish man for hunting and fishing for pleasure.
Where to watch Marine BoyEpisode 19
Empire Of The Sea
30m
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.
Where to watch Marine BoyEpisode 20
Battle To Save The World
30m
Marine Boy leaves the P-1 to search for the wreckage of a ship sunk by Captain Rex Rancid's electronic missiles.
Where to watch Marine BoyEpisode 21
The Terrifying Icebergs
30m
Marine Boy and P-1 are sent to investigate the disappearance of ships at the North Pole, apparently due to icebergs.
Where to watch Marine BoyEpisode 22
The Whales Of Destruction
30m
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.
Where to watch Marine BoyEpisode 23
The Power Of Power
30m
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.
Where to watch Marine BoyEpisode 24
5 Billion In Diamonds
30m
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.
Where to watch Marine BoyEpisode 25
Mission At Corkscrew Strait
30m
In leading an important cargo ship through the narrow strait, P-1 must use torpedoes to clear the way.
Where to watch Marine BoyEpisode 26
Lighthouse Of Terror
30m
A lighthouse beam changes course mysteriously and ships in the area are running around as a result.
Where to watch Marine BoyEpisode 27
The Invincible Force
30m
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.
Where to watch Marine BoyEpisode 28
Riddle Of The Vanishing Frogmen
30m
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.
Where to watch Marine BoyEpisode 29
Panic In The Pacific
30m
Marine Boy and the P-1 encounter synthetic jelly monsters which attack a secret airship whose torpedoes only make them multiply and grow larger.
Where to watch Marine BoyEpisode 30
24 Hours To Doom
30m
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.
Where to watch Marine BoyEpisode 31
Attack Of The Robot Spiders
30m
Marine Boy and his racer, Carrier Fish, are trapped by robot sea spiders who spin webs and encircle them.
Where to watch Marine BoyEpisode 32
The Great Bomb Robbery
30m
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.
Where to watch Marine BoyEpisode 33
Operation Deep Deep
30m
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.
Where to watch Marine BoyEpisode 34
The Stolen Island
30m
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.
Where to watch Marine BoyEpisode 35
Underwater Underworld
30m
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.
Where to watch Marine BoyEpisode 36
Rustlers Of The Deep
30m
Rustlers steal the whales from Texboy's deep sea ranch.
Where to watch Marine BoyEpisode 37
Raid Of The Robot Robbers
30m
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.
Where to watch Marine BoyEpisode 38
Attack Of The Robot Sharks
30m
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.
Where to watch Marine BoyEpisode 39
The Monster Search
30m
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.
Where to watch Marine BoyEpisode 40
The Well Hidden Plan
30m
Marine Boy and the P-1 set out to search for a microfilm which has been hidden in a potato.
Where to watch Marine BoyEpisode 41
Flimflam On The High Seas
30m
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.
Where to watch Marine BoyEpisode 42
The Dragon Of The Sea
30m
A sea dragon is wounded by a movie crew which is trying to film it. Ocean Patrol is ordered to destroy it.
Where to watch Marine BoyEpisode 43
Piracy Under The Sea!
30m
Marine Boy's wrist radio is removed by a playful baby dolphin and he cannot hear Bullton and Piper call for help.
Where to watch Marine BoyEpisode 44
The Super Brain Capers
30m
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.
Where to watch Marine BoyEpisode 45
The Great Underwater Train Robbery
30m
Jesse Jamison and his men take over a train which is carrying a shipment of rubies on the Underwater Railroad.
Where to watch Marine BoyEpisode 46
The Genius Dolphin
30m
Professor Fumble invents a mini-electronic translator for Splasher to use in order to speak with humans.
Where to watch Marine BoyEpisode 47
The Nuclear Pirates
30m
Two ships collide in a fog and the nuclear-powered ship is robbed of its nuclear fuel.
Where to watch Marine BoyEpisode 48
The Phoney Patrolmen
30m
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.
Where to watch Marine BoyEpisode 49
Saga Of The Undersea Lion
30m
Captain Kiddo and his pirate ship discover a castle filled with treasure and guarded by a sea lion on the ocean floor.
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The Mini Micro Wave
30m
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.
Where to watch Marine BoyEpisode 51
The Ultra Freezer Freeze
30m
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.
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The Tubsub Tanker Sub
30m
A storm causes an oil tanker to spill oil in the sea, jeopardising the fish. Octane builds a spill-proof Tubsub Tanker Sub.
Where to watch Marine BoyEpisode 53
The Tremendous Tremendo
30m
When the evil Despotic invents a super electronic brain called Tremendo, he plans a world conquest.
Where to watch Marine BoyEpisode 54
The Ghosts Of Spook Island
30m
A supposedly haunted island is under the domination of the mysterious Captain Wraith.
Where to watch Marine BoyEpisode 55
Ghost Of Destruction
30m
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.
Where to watch Marine BoyEpisode 56
The Whale Blows Rainbows
30m
Guppy, an enormous pet whale, is kidnapped by Cuthbert Tuthsum, a butler with ambitions toward evil.
Where to watch Marine BoyEpisode 57
The Great Plankton Menace
30m
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.
Where to watch Marine BoyEpisode 58
Showdown At Sea
30m
When Professor Puddin builds his complex for extracting gold from sea water, the infamous Dr. Al Kemy devises an evil plan.
Where to watch Marine BoyEpisode 59
The Precious Robot
30m
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.
Where to watch Marine BoyEpisode 60
Fight For The Rocket
30m
Professor Fumble's greatest invention, a weather observation rocket, is stolen by the notorious Lard Greedfat.
Where to watch Marine BoyEpisode 61
Red Menace
30m
Suddenly, an army of red dolphins threatens the ocean depths. Their goal is the destruction of the Ocean Patrol.
Where to watch Marine BoyEpisode 62
The Invincible Robots
30m
Professor Fumble invents a fabulous new robot, but evil forces build an army of the robots.
Where to watch Marine BoyEpisode 63
Island Of Treasure
30m
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.
Where to watch Marine BoyEpisode 64
Thieves Of The Deep
30m
Flim Flamboyant schemes to becomes a billionaire by robbing the underwater oil pipeline.
Where to watch Marine BoyEpisode 65
The Wild Monster Plant
30m
The ultrasonic voices of Splasher and his friends awaken a dangerous monster plant which has been sleeping for millions of years.
Where to watch Marine BoyEpisode 66
The Vanishing Vessel
30m
A cruise ship carrying Professor Fumble and the world's greatest scientists disappears without a trace.
Where to watch Marine BoyEpisode 67
Challenges Of The Pirates
30m
The powerful pirate, Captain Kiddo, is challenged by the Queen of Pirates to see if he can defeat Marine Boy.
Where to watch Marine BoyEpisode 68
Land Of The Strange Vikings
30m
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.
Where to watch Marine BoyEpisode 69
Attack Of The Icebergs
30m
When huge mysterious icebergs appear in the Tropical Sea, the Ocean Patrol is alerted.
Where to watch Marine BoyEpisode 70
The Deadly Tank
30m
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.
Where to watch Marine BoyEpisode 71
Avenger Of The Sea
30m
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.
Where to watch Marine BoyEpisode 72
The Desperate Search
30m
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.
Where to watch Marine BoyEpisode 73
The Secret Of The Golden Seaweed
30m
When a castaway whom Marine Boy rescues tells him of a fabulous growth of seaweed, they set off together to find the fantastic plant.
Where to watch Marine BoyEpisode 74
The Fantastic Flash
30m
Marine Boy is blinded temporarily by a flash of light which a gang of criminals is using to escape detection of their crimes.
Where to watch Marine BoyEpisode 75
The Stormy Brainstorm
30m
The Brainstorm, a super electronic computer, suddenly becomes so powerful that it can control not only machines but men's minds.
Where to watch Marine BoyEpisode 76
The Gill Men
30m
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.
Where to watch Marine BoyEpisode 77
The Great Sea Escape
30m
Two master criminals escape from an underwater prison farm and use the P-1 as their getaway boat with Bullton and Piper as hostages.
Where to watch Marine BoyEpisode 78
The Desert Destroyer
30mfinale
Suddenly, the desert is flooded with sea water. Ocean Patrol believes that someone is illegally mining uranium beneath the desert.
Where to watch Marine BoyEpisode information updated Jul 24, 2026
Available now in United States
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Cast
Yoshiko Ohta
Gorō Naya
Kazuko Sugiyama
Tadashi Nakamura