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|extra2 = Sea Watchtower Stone
  
|extra2 = Sea Watchtower Stone
 
}}
  
}}
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{{Nihongo|'''Seastone'''|海楼石|Kairōseki|translated as "'''Seastone'''"; literally meaning "Sea Watchtower Stone"}}, called '''Sea-Prism Stone''' in the English versions, and '''Cherry Stone''' in ''[[One Piece: Grand Battle! Rush!|One Piece: Grand Battle]]'', is a naturally occurring (though apparently rare) substance that can drain the energy of Devil Fruit users to the point where they can't consciously control their powers. [[Vegapunk|Dr. Vegapunk]] has invented revolutionary ways to use this rare substance. The [[Marines]] appear to have vast quantities of it, using it for [[Impel Down|jail cells]],{{qref|name=Smoker|chap=169|ep=106|page=11|Smoker mentions that all Marine Headquarters' prisons are made of seastone.}} handcuffs,{{qref|name=c400|chap=400|ep=285|page=11|Fukurou tells the Straw Hats about Seastone.}} weapons,{{qref|name=Smoker}} and the bottoms of battleships.{{qref|name="Marine secret"|chap=433|ep=315|page=|Seastone on ships noted by Coby.}}
   
  +
According to [[Basil Hawkins]], it originated from the [[Wano Country]].{{qref|chap=924|ep=|page=3|Basil Hawkins states that Seastone originated from Wano.}}
⚫
{{Nihongo|'''Seastone'''|海楼石|Kairōseki|translated as "'''Seastone'''"; literally meaning "Sea Watchtower Stone"}}, called '''Sea-Prism Stone''' in the English versions, and '''Cherry Stone''' in ''[[One Piece: Grand Battle Rush!|One Piece: Grand Battle]]'', is a naturally occurring (though apparently rare) substance that can drain the energy of Devil Fruit users to the point where they can't consciously control their powers. [[Vegapunk|Dr. Vegapunk]] has invented revolutionary ways to use this rare substance. The [[Marines]] appear to have vast quantities of it, using it for [[Impel Down|jail cells]],{{qref|name=Smoker|chap=169|ep=106|page=11|Smoker mentions that all Marine Headquarters' prisons are made of seastone.}} handcuffs,{{qref|name=c400|chap=400|ep=285|page=11|text=Fukuro tells the Straw Hats about Seastone.}} weapons,{{qref|name=Smoker}} and the bottoms of battleships.{{qref|name="Marine secret"|chap=433|ep=315|page=|Seastone on ships noted by Coby.}}
  
   
 
==Properties==
  
==Properties==
−
It is stated by [[Pagaya]] that Seastone contains a compound known as {{Nihongo|'''Pyrobloin'''|パイロブロイン|Pairoburoin}} which when separated from Seastone can help to create [[Island Clouds]] or [[Sea Clouds]].{{qref|name=Creating|volume=26|chapter=240|episode=154|text=Pagaya explains creation of island and sea clouds.}}
 +
It is stated by [[Pagaya]] that Seastone contains a compound known as {{Nihongo|'''Pyrobloin'''|パイロブロイン|Pairoburoin}} which when separated from Seastone can help to create [[Island Clouds]] or [[Sea Clouds]].{{qref|name=Creating|volume=26|chap=240|ep=154|Pagaya explains creation of island and sea clouds.}}
   
 
Seastone is said to be as hard as diamond.{{qref|name=c400}}
  
Seastone is said to be as hard as diamond.{{qref|name=c400}}
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==Effects on Devil Fruit Users==
  
==Effects on Devil Fruit Users==
 
[[File:Smoker Subdues Luffy at Marineford.png|thumb|left|210px|Smoker using Seastone to incapacitate Luffy.]]
  
[[File:Smoker Subdues Luffy at Marineford.png|thumb|left|210px|Smoker using Seastone to incapacitate Luffy.]]
  +
 
It was stated by [[Vice Admiral]] [[Smoker]] that Seastone "gives off a wavelength that is the same as the sea itself" making him refer to it as a solid form of the sea. So far the material has only shown effect upon actual contact with someone who has eaten a Devil Fruit. Upon contact the material drains the victim's body of energy, and stops them from controlling their Devil Fruit powers - having the same effect as throwing them into the sea.{{qref|name=Smoker}}
  
It was stated by [[Vice Admiral]] [[Smoker]] that Seastone "gives off a wavelength that is the same as the sea itself" making him refer to it as a solid form of the sea. So far the material has only shown effect upon actual contact with someone who has eaten a Devil Fruit. Upon contact the material drains the victim's body of energy, and stops them from controlling their Devil Fruit powers - having the same effect as throwing them into the sea.{{qref|name=Smoker}}
   
 
The degree of "weakness" induced by the Seastone depends on its density and composition; for example, Seastone handcuffs rob the prisoner of their abilities, but still allow the prisoner to move their bodies around normally. Seastone only works upon direct and constant contact, which explains how Smoker can carry a Seastone-tipped jitte on his back, without it disabling him (presumably, thick clothing will prevent the Seastone's effect from harming the victim).{{qref|name=Smoker}}
  
The degree of "weakness" induced by the Seastone depends on its density and composition; for example, Seastone handcuffs rob the prisoner of their abilities, but still allow the prisoner to move their bodies around normally. Seastone only works upon direct and constant contact, which explains how Smoker can carry a Seastone-tipped jitte on his back, without it disabling him (presumably, thick clothing will prevent the Seastone's effect from harming the victim).{{qref|name=Smoker}}
   
−
However, it has been shown that although a Devil Fruit user loses his/her powers when in contact with the Seastone, said powers can still be used on and affect the Seastone. Another example is when [[Galdino|Mr. 3's]] [[Doru Doru no Mi|candle wax key]] could open Seastone cuffs and cell doors, though this may be because the locks themselves are not made of Seastone or because the wax has no Devil Fruit powers inside it,{{Qref|chap=444|page=2-3|ep=542|Galdino creating wax keys that can open even Seastone locks.}} as shown when he unlocked [[Portgas D. Ace|Ace's]] Seastone handcuffs.{{Qref|chap=571|page=|ep=480|Galdino creating a wax key to unlock Ace's handcuffs.}} Another example is when [[Shiki]] [[Fuwa Fuwa no Mi|levitated]] battleships in Marineford, despite the hulls being lined with Seastone. [[Trafalgar D. Water Law|Trafalgar Law]] was also able to switch Seastone chains with regular ones, using his [[Ope Ope no Mi|abilities]].{{qref|chap=677|ep=603|page=10|Law explains how he has replaced the Seastone chain with an ordinary one.}}
 +
However, it has been shown that although a Devil Fruit user loses his/her powers when in contact with the Seastone, said powers can still be used on and affect the Seastone. An example is when [[Galdino|Mr. 3]]'s [[Doru Doru no Mi|candle wax key]] could open Seastone cuffs and cell doors, though this may be because the locks themselves are not made of Seastone or because the wax has no Devil Fruit powers inside it,{{Qref|chap=444|page=2-3|ep=542|Galdino creating wax keys that can open even Seastone locks.}} as shown when he unlocked [[Portgas D. Ace|Ace]]'s Seastone handcuffs.{{Qref|chap=571|page=|ep=480|Galdino creating a wax key to unlock Ace's handcuffs.}} Another example is when [[Shiki]] [[Fuwa Fuwa no Mi|levitated]] battleships in Marineford, despite the hulls being lined with Seastone. [[Trafalgar D. Water Law|Trafalgar Law]] was also able to switch Seastone chains with regular ones, using his [[Ope Ope no Mi|abilities]].{{qref|chap=677|ep=603|page=10|Law explains how he has replaced the Seastone chain with an ordinary one.}}
  +
  +
According to [[Caribou]], Seastone restraints can be modified to make a [[Devil Fruit]] user weak to a certain extent.{{qref|name=c928|chap=928|page=4|Caribou explains how seastone can be modified.}}{{qref|name=c935|chap=935|A Udon prison guard mentions how their prisoners with Devil Fruit powers are restrained with just enough seastone to allow them to perform manual labor.}} Luffy has indicated that being weakened by Seastone affects his [[Haki]], as he was unable to use it with Seastone handcuffs on and became able to once he had the cuffs removed.{{qref|name=c935|chap=935|Luffy laments being unable to use Haki.}}
   
 
===Other Effects===
  
===Other Effects===
−
The effects of Seastone also affect creatures of the sea such as [[Sea King]]s. By layering the bottom of ships with Seastone, creatures that are underneath the ship will be unaware of the vessel, and thus will not attack it.{{qref|name="Marine secret"}} However, while the Seastone hides the movements of the vessel traversing above the Sea Kings, that does not mean they still cannot see the ship.{{qref|name="see ship"|chap=516|ep=410|page=|the Kuja pirates spot a dead Sea King and Momonga notes though they can move above the Sea Kings nest unnoticed, it does not hide them from the creatures' sight.}} This, along with the effect of Devil Fruits, is researched by [[Vegapunk|Dr. Vegapunk]], a Marine scientist.{{qref|name="Marine secret"}}
 +
The effects of Seastone also affect creatures of the sea such as [[Sea King]]s. By layering the bottom of ships with Seastone, creatures that are underneath the ship will be unaware of the vessel, and thus will not attack it.{{qref|name="Marine secret"}} However, while the Seastone hides the movements of the vessel traversing above the Sea Kings, that does not mean they cannot see the ship.{{qref|name="see ship"|chap=516|ep=410|page=|the Kuja pirates spot a dead Sea King and Momonga notes though they can move above the Sea Kings nest unnoticed, it does not hide them from the creatures' sight.}} This, along with the effect of Devil Fruits, is researched by [[Vegapunk|Dr. Vegapunk]], a Marine scientist.{{qref|name="Marine secret"}}
   
 
==Items==
  
==Items==
 
Typically, Seastone is primarily found in the form of restraining devices, such as shackles or cages, but they have other uses. Thus, it is deployed as a Devil Fruit counter by the [[Marines]] as well as other groups like the [[Shichibukai]] and [[Cipher Pol]]. Some devices are adapted so the Marines with Devil Fruits can use these weapons, without actually making contact with the device themselves, an event which would nullify their own powers in the process of trying to handle another with a Devil Fruit ability.{{qref|name=Smoker}}
  
Typically, Seastone is primarily found in the form of restraining devices, such as shackles or cages, but they have other uses. Thus, it is deployed as a Devil Fruit counter by the [[Marines]] as well as other groups like the [[Shichibukai]] and [[Cipher Pol]]. Some devices are adapted so the Marines with Devil Fruits can use these weapons, without actually making contact with the device themselves, an event which would nullify their own powers in the process of trying to handle another with a Devil Fruit ability.{{qref|name=Smoker}}
  +
  +
Wano Country has many craftsmen who have expertise in working with the mineral and are the only ones capable of using it to make delicate items, including nails.
   
 
===Weapons===
  
===Weapons===
−
*'''[[Nanashaku Jitte]]''': [[Smoker|Smoker's]] jitte, where the tip is made of Seastone, so Smoker can use it to nullify his opponent's Devil Fruit powers.{{qref|name=Smoker}}
 +
*'''[[Nanashaku Jitte]]''': [[Smoker]]'s jitte, where the tip is made of Seastone, so Smoker can use it to nullify his opponent's Devil Fruit powers.{{qref|name=Smoker}}
−
*'''Wiper's Skates''': [[Wiper|Wiper's]] skate-type [[Waver]] has added Seastone, so he could use it to nullify [[Enel|Enel's]] [[Logia]] [[Goro Goro no Mi|abilities]].{{Qref|chap=260|ep=171|Wiper uses his Seastone equipped skates to stop Luffy's attacks.}}{{qref|chap=275|ep=180|Wiper uses his Seastone equipped skates to hold Enel down.}}
 +
*'''Wyper's Skates''': [[Wyper]]'s skate-type [[Waver]] has added Seastone, so he could use it to nullify [[Enel]]'s [[Logia]] [[Goro Goro no Mi|abilities]].{{Qref|chap=260|ep=171|Wyper uses his Seastone equipped skates to stop Luffy's attacks.}}{{qref|chap=275|ep=180|Wyper uses his Seastone equipped skates to hold Enel down.}}
−
*'''[[Battle Smasher]]''': [[Z|Z's]] large mechanical arm is embedded with Seastone, allowing him to effectively nullify Devil Fruit powers.{{Qref|name=m12|movie=12|Zephyr using Seastone weaponry to defeat Luffy.}}
 +
*'''[[Battle Smasher]]''': [[Z]]'s large mechanical arm is embedded with Seastone, allowing him to effectively nullify Devil Fruit powers.{{Qref|name=m12|movie=12|Zephyr using Seastone weaponry to defeat Luffy.}}
 
*'''Bullets''': Z uses them for long-ranged attacks against [[Devil Fruit]] users, such as [[Monkey D. Luffy]]. Those bullets not only wound Devil Fruit users, but also rob them of their strength and their ability to use their powers until they are extracted, making them very effective weapons.{{Qref|name=m12}} [[Capone Bege]] threatened to shoot down [[Caesar Clown]] with such bullets if he did not show himself, only to reveal he did not have such bullets.{{Qref|name=c812|chap=812|page=15|ep=|A Fire Tank Pirate using a Seastone spear to pin down Caesar.}}
  
*'''Bullets''': Z uses them for long-ranged attacks against [[Devil Fruit]] users, such as [[Monkey D. Luffy]]. Those bullets not only wound Devil Fruit users, but also rob them of their strength and their ability to use their powers until they are extracted, making them very effective weapons.{{Qref|name=m12}} [[Capone Bege]] threatened to shoot down [[Caesar Clown]] with such bullets if he did not show himself, only to reveal he did not have such bullets.{{Qref|name=c812|chap=812|page=15|ep=|A Fire Tank Pirate using a Seastone spear to pin down Caesar.}}
 
*'''Spear''': Bege has a spear made of Seastone which he had one of his subordinates use in order to restrain Caesar Clown.{{Qref|name=c812}}
  
*'''Spear''': Bege has a spear made of Seastone which he had one of his subordinates use in order to restrain Caesar Clown.{{Qref|name=c812}}
  +
[[File:Seastone Nail.png|thumb|160px|A seastone nail.]]
  +
*'''Nails''': A member of the [[Beasts Pirates]] who serves as a subordinate to [[Basil Hawkins]] has access to nails made of Seastone that he fires off from a gun. It was used on [[Trafalgar D. Water Law|Trafalgar Law]] to take away his strength and Devil Fruit ability, having essentially the same effect of Seastone bullets.
   
 
===Restraints===
  
===Restraints===
−
*'''Seastone Net''': Used in [[Loguetown]], a net made of Seastone was thrown on [[Buggy]] and [[Alvida]] completely preventing them from using their powers.{{qref|name=first}} Alternatively, it was used to capture [[Monkey D. Luffy]], Buggy, and [[Galdino|Mr. 3]] in [[Impel Down]], but the Sphinx tore it apart, indicating that only parts of the net contain Seastone, while the rest is steel cable.{{Qref|name=c530|chap=530|page=|ep=431|The Sphinx tore apart the Seastone-embedded net..}}
 +
*'''Seastone Net''': Used in [[Loguetown]], a net made of Seastone was thrown on [[Buggy]] and [[Alvida]] completely preventing them from using their powers.{{qref|name=first}} Alternatively, it was used to capture [[Monkey D. Luffy|Luffy]], Buggy, and [[Galdino|Mr. 3]] in [[Impel Down]], but the [[Sphinx]] tore it apart, indicating that only parts of the net contain Seastone, while the rest is steel cable.{{Qref|name=c530|chap=530|page=|ep=431|The Sphinx tore apart the Seastone-embedded net..}}
−
*'''Seastone Cage''': Seen in [[Alabasta]], it was used by [[Crocodile]] to drain Luffy and Smoker's powers and make them unable to use their Devil Fruit abilities. The Government's central prison, Impel Down, also uses Seastone cages.{{qref|name=Smoker}}
 +
*'''Seastone Cage''': Seen in [[Alabasta]], it was used by [[Crocodile]] to drain Luffy and [[Smoker]]'s powers and make them unable to use their [[Devil Fruit]] abilities. The [[World Government]]'s central prison, Impel Down, also uses Seastone cages.{{qref|name=Smoker}}
−
*'''Seastone Cuffs''': A special handcuff made to arrest those with Devil Fruit powers. The lock is made of Seastone so that when a Devil Fruit user is wearing them, they cannot use their powers, but unlike other Seastone, it does not inhibit their mobility. During the [[Enies Lobby Arc|Enies Lobby raid]], [[Nico Robin]] wore them until Sogeking delivered the key to the bridge. Despite being unable to use her powers to fight back, she was able to move, and could attempt to escape or otherwise resist being taken to the [[Gates of Justice]].{{Qref|name=c400}} Sogeking tried to throw Seastone handcuffs at [[Jabra]] and [[Kaku]] in order to prevent them from using their Devil Fruit powers and make them easier to defeat, but got distracted by Kaku's "square" giraffe face and accidentally threw them on Zoro's wrist, and got handcuffed to him while also ducking due to Kaku's Amanedachi.{{Qref|chap=402|page=2-5|ep=286|Sogeking accidentally cuffed himself to Zoro with Seastone cuffs.}} These were also hooked onto Ace's arms and legs in his prison cell in Impel Down to prevent him from using his Devil Fruit powers. [[Onigumo]] also clasped one onto [[Marco]] during the [[Marineford Arc|war]] in [[Marineford]], to nullify his Devil Fruit powers.{{Qref|chap=568|page=|ep=477|Onigumo snaps a Seastone cuff onto Marco.}} [[Usopp]] fired a pair of Seastone shackles to coil around [[Caesar Clown]]'s neck, disabling his [[Gasu Gasu no Mi]] ability.{{Qref|chap=695|page=18|ep=621|Usopp fires a pair of Seastone shackles at Caesar.}}
 +
*'''Seastone Cuffs''': A special handcuff made to arrest those with Devil Fruit powers. The lock is made of Seastone so that when a Devil Fruit user is wearing them, they cannot use their powers, but unlike other Seastone, it does not inhibit their mobility. During the [[Enies Lobby Arc|Enies Lobby raid]], [[Nico Robin]] wore them until [[Sogeking]] delivered the key to the bridge. Despite being unable to use her powers to fight back, she was able to move, and could attempt to escape or otherwise resist being taken to the [[Gates of Justice]].{{Qref|name=c400}} Sogeking tried to throw Seastone handcuffs at [[Jabra]] and [[Kaku]] in order to prevent them from using their Devil Fruit powers and make them easier to defeat, but got distracted by Kaku's "square" [[Ushi Ushi no Mi, Model: Giraffe|giraffe]] face and accidentally threw them on [[Roronoa Zoro|Zoro]]'s wrist, and got handcuffed to him while also ducking due to Kaku's Amanedachi.{{Qref|chap=402|page=2-5|ep=286|Sogeking accidentally cuffed himself to Zoro with Seastone cuffs.}} These were also hooked onto [[Portgas D. Ace|Ace]]'s arms and legs in his prison cell in Impel Down to prevent him from using his Devil Fruit powers. [[Boa Hancock]] was required to wear one while visiting Ace at Impel Down. [[Onigumo]] also clasped one onto [[Marco]] during the [[Battle of Marineford]], to nullify his Devil Fruit [[Tori Tori no Mi, Model: Phoenix|powers]].{{Qref|chap=568|page=|ep=477|Onigumo snaps a Seastone cuff onto Marco.}} [[Usopp]] fired a pair of Seastone shackles to coil around [[Caesar Clown]]'s neck, disabling his [[Gasu Gasu no Mi]] ability.{{Qref|chap=695|page=18|ep=621|Usopp fires a pair of Seastone shackles at Caesar.}}
  +
*'''Seastone Chains''': Caesar had several Seastone chains on [[Punk Hazard]], however, [[Trafalgar D. Water Law|Law]] replaced some of them with regular ones. The chains were used to bind Law, Luffy, Smoker, and the rest of their party in a cage to be used to show [[Shinokuni]] power.{{Qref|chap=677|page=10|ep=603|Law mentioned the chains in Caesar's lab.}} The Prisoner Mine in [[Udon]] has access to 100% pure Seastone chains. They were used by [[Queen]]'s subordinates to restrain [[Charlotte Linlin|Big Mom]] after she fell asleep.{{qref|name=c947|chap=947|page=15|Big Mom is chained with Seastone.}}
   
 
===Other Uses===
  
===Other Uses===
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==Site Navigation==
  
==Site Navigation==
 
{{Devil Fruits Navibox}}
  
{{Devil Fruits Navibox}}
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{{Wano Country Navibox}}
 
{{Marine Navibox}}
  
{{Marine Navibox}}
 
{{Enies Lobby Navibox}}
  
{{Enies Lobby Navibox}}
 
{{Neo Marines Navibox}}
  
{{Neo Marines Navibox}}
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{{Weapons Navibox}}
 
[[de:Kairōseki]]
  
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[[Category:Minerals]]
  
[[Category:Minerals]]

Revision as of 10:39, 28 June 2020

Seastone (海楼石, Kairōseki?, translated as "Seastone"; literally meaning "Sea Watchtower Stone"), called Sea-Prism Stone in the English versions, and Cherry Stone in One Piece: Grand Battle, is a naturally occurring (though apparently rare) substance that can drain the energy of Devil Fruit users to the point where they can't consciously control their powers. Dr. Vegapunk has invented revolutionary ways to use this rare substance. The Marines appear to have vast quantities of it, using it for jail cells,[2] handcuffs,[3] weapons,[2] and the bottoms of battleships.[4]

According to Basil Hawkins, it originated from the Wano Country.[5]

Properties

It is stated by Pagaya that Seastone contains a compound known as Pyrobloin (パイロブロイン, Pairoburoin?) which when separated from Seastone can help to create Island Clouds or Sea Clouds.[6]

Seastone is said to be as hard as diamond.[3]

Effects on Devil Fruit Users

Smoker Subdues Luffy at Marineford

Smoker using Seastone to incapacitate Luffy.

It was stated by Vice Admiral Smoker that Seastone "gives off a wavelength that is the same as the sea itself" making him refer to it as a solid form of the sea. So far the material has only shown effect upon actual contact with someone who has eaten a Devil Fruit. Upon contact the material drains the victim's body of energy, and stops them from controlling their Devil Fruit powers - having the same effect as throwing them into the sea.[2]

The degree of "weakness" induced by the Seastone depends on its density and composition; for example, Seastone handcuffs rob the prisoner of their abilities, but still allow the prisoner to move their bodies around normally. Seastone only works upon direct and constant contact, which explains how Smoker can carry a Seastone-tipped jitte on his back, without it disabling him (presumably, thick clothing will prevent the Seastone's effect from harming the victim).[2]

However, it has been shown that although a Devil Fruit user loses his/her powers when in contact with the Seastone, said powers can still be used on and affect the Seastone. An example is when Mr. 3's candle wax key could open Seastone cuffs and cell doors, though this may be because the locks themselves are not made of Seastone or because the wax has no Devil Fruit powers inside it,[7] as shown when he unlocked Ace's Seastone handcuffs.[8] Another example is when Shiki levitated battleships in Marineford, despite the hulls being lined with Seastone. Trafalgar Law was also able to switch Seastone chains with regular ones, using his abilities.[9]

According to Caribou, Seastone restraints can be modified to make a Devil Fruit user weak to a certain extent.[10][11] Luffy has indicated that being weakened by Seastone affects his Haki, as he was unable to use it with Seastone handcuffs on and became able to once he had the cuffs removed.[11]

Other Effects

The effects of Seastone also affect creatures of the sea such as Sea Kings. By layering the bottom of ships with Seastone, creatures that are underneath the ship will be unaware of the vessel, and thus will not attack it.[4] However, while the Seastone hides the movements of the vessel traversing above the Sea Kings, that does not mean they cannot see the ship.[12] This, along with the effect of Devil Fruits, is researched by Dr. Vegapunk, a Marine scientist.[4]

Items

Typically, Seastone is primarily found in the form of restraining devices, such as shackles or cages, but they have other uses. Thus, it is deployed as a Devil Fruit counter by the Marines as well as other groups like the Shichibukai and Cipher Pol. Some devices are adapted so the Marines with Devil Fruits can use these weapons, without actually making contact with the device themselves, an event which would nullify their own powers in the process of trying to handle another with a Devil Fruit ability.[2]

Wano Country has many craftsmen who have expertise in working with the mineral and are the only ones capable of using it to make delicate items, including nails.

Weapons

  • Nanashaku Jitte: Smoker's jitte, where the tip is made of Seastone, so Smoker can use it to nullify his opponent's Devil Fruit powers.[2]
  • Wyper's Skates: Wyper's skate-type Waver has added Seastone, so he could use it to nullify Enel's Logia abilities.[13][14]
  • Battle Smasher: Z's large mechanical arm is embedded with Seastone, allowing him to effectively nullify Devil Fruit powers.[15]
  • Bullets: Z uses them for long-ranged attacks against Devil Fruit users, such as Monkey D. Luffy. Those bullets not only wound Devil Fruit users, but also rob them of their strength and their ability to use their powers until they are extracted, making them very effective weapons.[15] Capone Bege threatened to shoot down Caesar Clown with such bullets if he did not show himself, only to reveal he did not have such bullets.[16]
  • Spear: Bege has a spear made of Seastone which he had one of his subordinates use in order to restrain Caesar Clown.[16]
Seastone Nail

A seastone nail.

  • Nails: A member of the Beasts Pirates who serves as a subordinate to Basil Hawkins has access to nails made of Seastone that he fires off from a gun. It was used on Trafalgar Law to take away his strength and Devil Fruit ability, having essentially the same effect of Seastone bullets.

Restraints

  • Seastone Net: Used in Loguetown, a net made of Seastone was thrown on Buggy and Alvida completely preventing them from using their powers.[1] Alternatively, it was used to capture Luffy, Buggy, and Mr. 3 in Impel Down, but the Sphinx tore it apart, indicating that only parts of the net contain Seastone, while the rest is steel cable.[17]
  • Seastone Cage: Seen in Alabasta, it was used by Crocodile to drain Luffy and Smoker's powers and make them unable to use their Devil Fruit abilities. The World Government's central prison, Impel Down, also uses Seastone cages.[2]
  • Seastone Cuffs: A special handcuff made to arrest those with Devil Fruit powers. The lock is made of Seastone so that when a Devil Fruit user is wearing them, they cannot use their powers, but unlike other Seastone, it does not inhibit their mobility. During the Enies Lobby raid, Nico Robin wore them until Sogeking delivered the key to the bridge. Despite being unable to use her powers to fight back, she was able to move, and could attempt to escape or otherwise resist being taken to the Gates of Justice.[3] Sogeking tried to throw Seastone handcuffs at Jabra and Kaku in order to prevent them from using their Devil Fruit powers and make them easier to defeat, but got distracted by Kaku's "square" giraffe face and accidentally threw them on Zoro's wrist, and got handcuffed to him while also ducking due to Kaku's Amanedachi.[18] These were also hooked onto Ace's arms and legs in his prison cell in Impel Down to prevent him from using his Devil Fruit powers. Boa Hancock was required to wear one while visiting Ace at Impel Down. Onigumo also clasped one onto Marco during the Battle of Marineford, to nullify his Devil Fruit powers.[19] Usopp fired a pair of Seastone shackles to coil around Caesar Clown's neck, disabling his Gasu Gasu no Mi ability.[20]
  • Seastone Chains: Caesar had several Seastone chains on Punk Hazard, however, Law replaced some of them with regular ones. The chains were used to bind Law, Luffy, Smoker, and the rest of their party in a cage to be used to show Shinokuni power.[21] The Prisoner Mine in Udon has access to 100% pure Seastone chains. They were used by Queen's subordinates to restrain Big Mom after she fell asleep.[22]

Other Uses

  • Marine Ships: Dr. Vegapunk has discovered that Seastone can mask the presence of a ship from Sea Kings and other sea-dwellers, and therefore had the bottom of Marine ships covered in a layer of it, which is especially useful when traveling across the Calm Belt.[4] However, the Sea Kings can still see the ship, so it is not an absolute protection.[12]
  • Jewelry: Nico Robin was weakened by a jewel (a Seastone necklace) in a filler when she tried to stop Ian from escaping the Rainbow Mist.[23]
  • Fortification: Some people use it to fortify sensitive buildings and facilities, making them virtually indestructible. The SMILE Factory in Dressrosa is made out of Seastone.[24]

References

  1. ↑ 1.0 1.1 One Piece Manga and Anime — Vol. 12 Chapter 100 (p. 8) and Episode 53, Smoker uses Seastone Net to capture the Buggy and Alvida Alliance.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 One Piece Manga and Anime — Vol. 19 Chapter 169 (p. 11) and Episode 106, Smoker mentions that all Marine Headquarters' prisons are made of seastone.
  3. ↑ 3.0 3.1 3.2 One Piece Manga and Anime — Vol. 42 Chapter 400 (p. 11) and Episode 285, Fukurou tells the Straw Hats about Seastone.
  4. ↑ 4.0 4.1 4.2 4.3 One Piece Manga and Anime — Vol. 45 Chapter 433 and Episode 315, Seastone on ships noted by Coby.
  5. ↑ One Piece Manga — Vol. 92 Chapter 924 (p. 3), Basil Hawkins states that Seastone originated from Wano.
  6. ↑ One Piece Manga and Anime — Vol. 26 Chapter 240 and Episode 154, Pagaya explains creation of island and sea clouds.
  7. ↑ One Piece Manga and Anime — Vol. 46 Chapter 444 (p. 2-3) and Episode 542, Galdino creating wax keys that can open even Seastone locks.
  8. ↑ One Piece Manga and Anime — Vol. 58 Chapter 571 and Episode 480, Galdino creating a wax key to unlock Ace's handcuffs.
  9. ↑ One Piece Manga and Anime — Vol. 68 Chapter 677 (p. 10) and Episode 603, Law explains how he has replaced the Seastone chain with an ordinary one.
  10. ↑ One Piece Manga — Vol. 92 Chapter 928 (p. 4), Caribou explains how seastone can be modified.
  11. ↑ 11.0 11.1 One Piece Manga — Vol. 93 Chapter 935, A Udon prison guard mentions how their prisoners with Devil Fruit powers are restrained with just enough seastone to allow them to perform manual labor. Cite error: Invalid <ref> tag; name "c935" defined multiple times with different content
  12. ↑ 12.0 12.1 One Piece Manga and Anime — Vol. 53 Chapter 516 and Episode 410, the Kuja pirates spot a dead Sea King and Momonga notes though they can move above the Sea Kings nest unnoticed, it does not hide them from the creatures' sight.
  13. ↑ One Piece Manga and Anime — Vol. 28 Chapter 260 and Episode 171, Wyper uses his Seastone equipped skates to stop Luffy's attacks.
  14. ↑ One Piece Manga and Anime — Vol. 29 Chapter 275 and Episode 180, Wyper uses his Seastone equipped skates to hold Enel down.
  15. ↑ 15.0 15.1 One Piece Movie — One Piece Film: Z, Zephyr using Seastone weaponry to defeat Luffy.
  16. ↑ 16.0 16.1 One Piece Manga — Vol. 81 Chapter 812 (p. 15), A Fire Tank Pirate using a Seastone spear to pin down Caesar.
  17. ↑ One Piece Manga and Anime — Vol. 54 Chapter 530 and Episode 431, The Sphinx tore apart the Seastone-embedded net..
  18. ↑ One Piece Manga and Anime — Vol. 42 Chapter 402 (p. 2-5) and Episode 286, Sogeking accidentally cuffed himself to Zoro with Seastone cuffs.
  19. ↑ One Piece Manga and Anime — Vol. 58 Chapter 568 and Episode 477, Onigumo snaps a Seastone cuff onto Marco.
  20. ↑ One Piece Manga and Anime — Vol. 70 Chapter 695 (p. 18) and Episode 621, Usopp fires a pair of Seastone shackles at Caesar.
  21. ↑ One Piece Manga and Anime — Vol. 68 Chapter 677 (p. 10) and Episode 603, Law mentioned the chains in Caesar's lab.
  22. ↑ One Piece Manga — Vol. 94 Chapter 947 (p. 15), Big Mom is chained with Seastone.
  23. ↑ One Piece Anime — Episode 142, Ian using a Seastone necklace to weaken Robin.
  24. ↑ One Piece Manga and Anime — Vol. 75 Chapter 745 (p. 3) and Episode 680, a Donquixote Pirate reveals that the SMILE Factory is made of Seastone.

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