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Jail Island is the main setting of the game One Piece: World Seeker. It is under the control of the Marines. It was formerly called Jewel Island (ジュエルアイランド Jueru Airando?).[1]

Layout and LocationsEdit

Jewel Island is a lush, green island with multiple elevated surfaces and precious stone formations. It is stated to be rich in natural resources.[1] It is divided in five zones, each of them with at least one main city. Moreover there are three prisons, built up by new Warden Isaac, and several Marine Bases.

Sapphire TownEdit

Sapphire Town is one of the main city of the island and is divided in two parts by a river. There's also a little Marine Base in the North. It is Jeanne's family hometown.

Amber HarborEdit

Amber Harbor is a little port town controlled by pirates, due to Marines' lack of monitoring on the zone. Under the city there're various tunnels used as cove by pirates. Strawhat Pirates' ship Thousand Sunny moored here. Part of the island tunnels run under the town.

Topaz MineEdit

Topaz Mine is the main mining circuit of the island, even linked to the tunnels which run under the whole island. On front of the North entrance there's a city named Topaz Mine Town. On the East side of the mountain there's what seems to be the only graveyard of the island, where Jeanne's mother is buried.

Jade BridgeEdit

Jade Bridge is a little island bridge connecting Sapphire Town, Ruby Village and Topaz Mine's islands. It is controlled by Marines.

Ruby VillageEdit

Ruby Village is the poorest of Jail Island's towns, as countryside are frequently subdued by Marines from Tormaline. There's also a little harbor on the West. The largest forest of the island is on the North of Ruby Village[2].

Prison Tower - TormalineEdit

Tormaline, also known as Prison Tower, is one of the three prisons of the island. It secretly is a factory for Isaac's purposes, taking advance of the prisoners' workforce.
Jail Island

Jail Island.

Emerald TownEdit

Emerald Town is the biggest of the island's cities. It is divided in five quarters, the main of them hosting a little Marine Base. Emery Plaza is the main plaza of the town and is collocated on the East.

Steel CityEdit

Steel City is the richest of Jail Island's cities, prospered due the Pro-Marines faction and the closeness to Halcum Port. It also hosts the Radio Tower and the main Marine Base of the island, where there's also a little port at exclusive Marines use.

Sea Prison - AquamarineEdit

Aquamarine, also known as Sea Prison, is on the three prisons of the island. As Impel Down, it is composed by six undersea floors, in order to restrain Devil Fruit users. It is directly connected to Steel City's Marine Base. As aTormaline, Aquamarine has a hidden purpose: build Isaac's robots in the underground factory.

Crystal CanyonEdit

Crystal Canyon is the second main mine of the island and where the Dyna Stones were extracted. Due to this it is constantly monitored by Cipher Pol agents.

Halcum PortEdit

Halcum Port is Jail Island's main port, where most of the allowed ships dock. It also hosts a fish market.

Cannon IslandEdit

Cannon Island is a little peninsula on the North of Steel City. It is used as base by various pirates.

Sky Prison - Santa MariaEdit

Santa Maria, also known as Sky Prison, is one of the three prisons of the island and Isaac's headquarters. Santa Maria's real purpose is to collide against Mary Geoise, accomplishing Isaac's revenge plan. It gets destroyed by a Dyna Stone explosion after Luffy and Isaac's final fight.

Spa IslandEdit

For Doran's resort ship of the same name, see Spa Island.

Spa Island is a little island in the sea zone near Amber Harbor, characterized by a constant steam, similar to fog. It hides a secret onsen.

Sky IslandsEdit

There are two islands in Jail Island's skies. Both are under pirates' control, setting as their main base.


The citizens of Jail Island are split into two factions: "Pro-Marine" residents who accept Marine control and their modernization projects, and "Anti-Marine" residents who prefer tradition.[1]

[v · e · ?]
Jail Island
Isaac Merlin Diomis Monji Kagero
Anti-Marine Faction
Jeanne Gordon Skinny Bones Will Damian
Miranda Yuri Charles
Pro-Marine Faction
Rose Fred Eliza Albert Theo
Other Islanders
Doni Jackie Emma Jill Piranha
Musubi Tarako Pomme Vaun Eric
Anna Ray Nick Tama Roger
Shiro Roule Tamako
One-Man John Pirate Ship Immortal Lockpick Wolf
Cape Don Axe Hunger Pirates Grokky Barbados Craven
Honcho Cuddy



Sometime in the past, the inhabitants began to extract Dyna Stones using a secret method of excavation known only to the leader of the island.

Twelve years before the main storyline, the Marines hired a pirate fleet to attack the island in order to obtain the excavation method and the Dyna Stones, acknowledging them as a huge threat to world power balance. Thanks to Jeanne's mother, the war was averted, but she lost her life in a fight. The only survived pirate is Barbados.

Some time later the future leader and Jeanne's brother Isaac left the island in order to enlist in the Marine to pursue his justice ideals. He eventually lost faith in the Marine finding out the truth behind pirates'a attack to the island, but keep ranking up till the Prison Warden position, just to make return on the island, officially in order to monitoring the Dyna Stones excavation and sending informations to the Headquarter. He made build other two gaols (Aquamarine and Santa Maria), which brought richness to the people supporting Marine's domination, while the ones oppositing them got ostracized by various power abuse episodes, factually splitting the population in two factions: Pro-Marines and Anti-Marines. Jeanne eventually became the Anti-Marines' leader.

Isaac secretly began his revenge plan ten years before the main storyline, when he gathered a huge number of pirates in Tormaline, forcing them to build mechanic parts.

Some time before the main storyline, Isaac began spreading the rumour about a hidden treasure on the island, in order to gather several pirates to obstruct CP-0 agents' investigation and to draw Marine Admiral's attention.

One Piece: World SeekerEdit

Following the rumour about the treasure, Straw Hat Pirates reaches Jail Island short before the begin of the arc. The same goes for both Buggy and Crocodile. Almost at the same time, the World Government began to seek information, sending Rob Lucci on the island. Germa 66 too got convoked on the island due to their interest into buying Isaac's robots. Even Katakuri appears to be interested in Dyna Stones[3].

The grown grudge between Pro-Marines and Anti-Marines lead the latters to ask for Revolutionary Army's help, but it is too late. Short later Sabo's arrival on the island, some Pro-Marines shoot on Anti-Marines and civil war spreads.

Jeanne is able to appease the civillian thanks to a message spred by the Radio Tower she assaulted with Straw Hat Pirates' help. Isaac decides to make his move invading the island with his robots, keeping busy both admirals Kizaru and Fujitora as Kuzan, Smoker and Tashigi. Luffy and Jeanne decides to reach Santa Maria to personally deal with Isaac, but Fleet Admiral Sakazuki gets in the way. Thanks to Sabo's intervention, both Luffy and Jeanne are able to reach the cannon that will send them on the Sky Prison.

On the Santa Maria, Isaac reveals his true intention: he wants to launch the prison on Mary Geoise, letting the Dyna Stones collected in there explode, destroying the Holy Land. After Isaac's defeat, the prison detonates far from Jail Island. The shockwave invests the island, inducing Marines to evacuate the residents.

Some time after Straw Hat Pirates's departure, the island is back to normality and Jeanne visits her mother's grave, discovering Isaac is still alive.[1]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 One Piece: World Seeker
  2. According to Jeanne, inOne Piece: World Seeker
  3. Katakuri talks to Sabo about him seeking for Dyna Stones.

Site NavigationEdit

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Jail Island
Marines: Isaac  •  Merlin  •  Diomis
Anti-Marine Faction: Jeanne  •  Gordon  •  Skinny Bones  •  Will  •  Damian  •  Miranda  •  Yuri  •  Charles
Pro-Marine Faction: Rose  •  Fred  •  Eliza  •  Albert  •  Theo  •  Henry
Other Islanders: Doni  •  Jackie  •  Emma  •  Jill  •  Piranha  •  Musubi  •  Tarako  •  Pomme  •  Vaun  •  Eric (Child)  •  Anna  •  Ray  •  Nick  •  Tama  •  Roger  •  Shiro  •  Roule
Pirates: One-Man  •  John  •  Pirate Ship Immortal  •  Lockpick  •  Wolf (Non-Canon)  •  Cape Don Axe
Pirate Crews: Amber Pirates  •  Hunger Pirates
Related Pages
Locations: Jail Island
Others: Marines  •  World Government  •  Justice  •  Kagero  •  Dyna Stone  •  One Piece World Seeker
[v · e · ?]
Marine Officers: Sakazuki  •  Borsalino  •  Issho  •  Ryokugyu  •  Sengoku  •  Monkey D. Garp  •  Tsuru  •  John Giant  •  Comil  •  Momonga  •  Onigumo  •  Doberman  •  Strawberry  •  Yamakaji  •  Giant Squad (Lacroix  •  Ronse)  •  Dalmatian  •  Stainless  •  Mozambia  •  Cancer  •  Bastille  •  Smoker  •  Maynard  •  Gion  •  Tokikake  •  Draw  •  Sicily  •  Akehende  •  Catacombo  •  Kadar  •  Hina  •  Daigin  •  Yarisugi  •  Brannew  •  Kibin  •  T Bone  •  Very Good  •  Shu  •  Sharinguru  •  Gorilla  •  Tashigi  •  Koby  •  Nezumi  •  Ripper  •  Helmeppo  •  Glove  •  Zott  •  Stalker  •  Rokkaku  •  Makko  •  Isuka  •  Bogard  •  Candre  •  Sentomaru  •  X Drake
Subordinates and Others: Vegapunk  •  Shine  •  Mashikaku  •  Asahija  •  Fullbody  •  Jango  •  Lines  •  Ukkari  •  Pike  •  Bomba  •  Bakezo  •  Jero  •  Gal  •  Judges  •  Kyuji  •  Koda  •  Fishbonen
Non-Canon: Jonathan  •  Komei  •  Prodi  •  Wilder  •  Blago  •  Graydle  •  Balzac  •  Yukimura  •  Bilić  •  Nelson Royale  •  Moore  •  Trap  •  All-Hunt Grount  •  Governor  •  Shepherd  •  Hardy  •  Rapanui Pasqua  •  Drake  •  Isoka  •  Pukau  •  Akibi  •  Rongo  •  Lego  •  Regis  •  Hot Wind Marines  •  Saga  •  Toma  •  Bismarck  •  Boo Kong  •  Jessica  •  Shinpachi  •  Billy  •  Tom  •  Marley Brothers  •  Tajio  •  Kobato  •  Mekao  •  LeMay  •  Giant Baseball Team  •  Dojaku  •  Kansho  •  Straight  •  Curve  •  Ant De Bonham  •  Shimoi Zappa  •  Pokke  •  Merlin  •  Diomis  •  Comb  •  Glass
Former Marines
Canon: Kong   •  Jaguar D. Saul   •  Bell-mère   •  Diez Barrels   •  Donquixote Rosinante   •  Caesar Clown   •  Morgan   •  Pudding Pudding   •  Kuzan   •  Vergo   •  Attach 
Non-Canon: Z   •  Shuzo   •  Randolph   •  Jim   •  Daddy Masterson   •  Minchey   •  Gasparde   •  Ryudo   •  Ain   •  Binz   •  Smash   •  Isaac 
Ship(s): Marine Ships  •  Alexandra   •  Stan Maley   •  Pine Peak   •  Salamander 
Vehicles: Billower Bike  •  Ao Chari 
Devil Fruit Based: Magu Magu no Mi  •  Hito Hito no Mi, Model: Daibutsu  •  Pika Pika no Mi  •  Zushi Zushi no Mi  •  Hie Hie no Mi   •  Woshu Woshu no Mi  •  Moku Moku no Mi  •  Ori Ori no Mi  •  Ryu Ryu no Mi, Model: Allosaurus  •  Beri Beri no Mi  •  Sabi Sabi no Mi  •  Shari Shari no Mi  •  Nagi Nagi no Mi   •  Gasu Gasu no Mi   •  Nepa Nepa no Mi   •  Mono Mono no Mi   •  Meta Meta no Mi   •  Basu Basu no Mi   •  Ame Ame no Mi    •  Mosa Mosa no Mi    •  Modo Modo no Mi    •  Zuma Zuma no Mi  
Fighting Style Based: Haki  •  Rokushiki
Weapon Based: Shigure  •  Kashu  •  Yamaoroshi  •  Nanashaku Jitte  •  Bamboo  •  Same-kiri Bocho  •  Buster Call  •  Pacifista  •  Konpira  •  Eagle Launcher   •  Battle Smasher    •  Dyna Stone 
Related Articles
Marine Bases: Base of Marine Headquarters  •  Marineford (Gates of Justice)  •  G-1  •  G-2  •  G-3  •  G-5  •  G-8 (Navarone Island  •  8th Branch   •  16th Branch  •  77th Branch  •  80th Branch  •  153rd Branch (Shells Town)  •  Loguetown  •  Karakuri Island  •  Punk Hazard   •  Asuka Island   •  Trap Tower   •  Hand Island   •  Firs Island   •  Nebulandia   •  Promise Land   •  G-F   •  Jail Island 
Groups: Marine Ranks (Admiral  •  Vice Admiral  •  Captain)  •  SWORD  •  SSG
Events: God Valley Incident  •  Ohara Incident  •  Operation Utopia  •  Battle of Marineford  •  Nightmare of Baldimore (Legend of the Sacred Burning Beast of Baldimore)  •  Rocky Port Incident  •  Grand Reboot 
Concepts: Justice  •  Epithet  •  Bounties  •  Will of D.  •  Buster Call
Story Arcs: Romance Dawn Arc  •  Baratie Arc  •  Arlong Park Arc  •  Loguetown Arc  •  Warship Island Arc   •  Little Garden Arc  •  Alabasta Arc  •  Jaya Arc  •  G-8 Arc   •  Long Ring Long Land Arc  •  Water 7 Arc  •  Enies Lobby Arc  •  Post-Enies Lobby Arc  •  Thriller Bark Arc  •  Sabaody Archipelago Arc  •  Amazon Lily Arc  •  Impel Down Arc  •  Marineford Arc  •  Chapter 0  •  Post-War Arc  •  Return to Sabaody Arc  •  Fish-Man Island Arc  •  Punk Hazard Arc  •  Dressrosa Arc  •  Zou Arc  •  Marine Rookie Arc   •  Levely Arc  •  Wano Country Arc
Cover Stories: Diary of Koby-Meppo  •  Jango's Dance Paradise  •  Wapol's Omnivorous Hurrah  •  Ace's Great Blackbeard Search  •  Miss Goldenweek's "Operation: Meet Baroque Works"  •  CP9's Independent Report  •  Straw Hat's Separation Serial  •  "Gang" Bege's Oh My Family
Movies: Dead End Adventure  •  The Cursed Holy Sword  •  Episode of Alabasta: The Desert Princess and the Pirates  •  One Piece Film: Strong World  •  One Piece 3D: Straw Hat Chase  •  One Piece Film: Z  •  One Piece Film: Gold  •  One Piece: Stampede
Other: World Government  •  Three Great Powers  •  Seastone  •  Ox Bell  •  World Military Draft  •  Ocean Guide   •  Fleet
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New World
Locations: Laugh Tale  •  Elbaf  •  Yukiryu Island  •  Hachinosu/Pirate Island  •  Wano Country (Flower Capital  •  Kuri  •  Udon  •  Ringo  •  Onigashima  •  Yo )  •  Edd War  •  Foodvalten  •  Totto Land (Whole Cake Island  •  100% Island  •  Biscuits Island  •  Black Island  •  Cacao Island  •  Candy Island  •  Cheese Island  •  Cutlery Island  •  Flavor Island  •  Fruits Island  •  Funwari Island  •  Futoru Island  •  Ice Island  •  Jam Island  •  Jelly Island  •  Kibo Island  •  Kimi Island  •  Kinko Island  •  Komugi Island  •  Liqueur Island  •  Loving Island  •  Margarine Island  •  Milenge Island  •  Noko Island  •  Nuts Island  •  Package Island  •  Piepie Island  •  Poripori Island  •  Potato Island  •  Rokumitsu Island  •  Sanshoku Island  •  Tanega Island  •  Topping Island  •  Unique Island  •  Yakigashi Island)  •  Punk Hazard  •  Raijin Island  •  Risky Red Island  •  Mystoria Island  •  Dressrosa (Corrida Colosseum  •  Acacia  •  Sebio  •  Carta  •  Primula  •  Flower Hill  •  SMILE Factory )  •  Green Bit (Tontatta Kingdom)  •  Zou (Mokomo Dukedom)  •  Prodence Kingdom  •  Mogaro Kingdom  •  Jewel Ice Sheet  •  Doerena Kingdom  •  Majiatsuka Kingdom  •  Applenine Island  •  Karai Bari Island  •  Hot-Hot Sea  •  Broc Coli Island  •  Germa Kingdom   •  Port Chibaralta Island  •  Sphinx  •  Lodestar Island
Non-Canon Locations: Samba Island  •  Maubeugemour Sea  •  Hand Island  •  Endpoints (Firs Island  •  Secon Island  •  Piriodo)  •  Dock Island  •  Paradise Island  •  Madatascar Island  •  Resorto  •  Tongari Island  •  Marriage Greenland  •  Digital Art Island  •  Kinoko Island  •  Nebulandia  •  Promise Land  •  Silver Mine  •  Alchemi  •  Gran Tesoro  •  Fron Island  •  Tomoshibi Island  •  Jail Island  •  Maze Island  •  Delta Island
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