Seafoam Islands

The Seafoam Islands (Japanese: Twins Island) are a pair of islands (one island in the Japanese versions of the games and other media as specified in the Trivia section here) that are situated on . The two islands are shaped the same, as if they were twins.
==Terminology==
This place is called Seafoam Island on the Kanto map seen in Pokémon: Official Nintendo Player's Guide (page 3), Pokémon Gold and Silver: Official Nintendo Player's Guide (page 5), Pokémon Gold and Silver: Complete Pokédex (page 93), and Pokémon Crystal: Official Nintendo Player's Guide (page 5).
==Geography==
The caves beneath the islands are full of twists and turns and have five separate floors. To complete the trek through them, a series of puzzles 
which involve using or Strong Push to move boulders to block the flow of water, as the current is too fast to or Sea Skim across, need to be solved. Any attempt to Surf/Sea Skim on the currents will result to being sent back to where the current ends each time, and it is impossible to fight the currents. When the puzzle is solved, the boulders will stay in the water permanently.
The Seafoam Islands is roost of the Legendary Pokémon . It is located on the lowest floor of the caverns under the islands. It is also where Misty comes to train. In Generations II and , the Cinnabar Gym has been relocated here after the original Gym was destroyed by a volcanic eruption on Cinnabar Island.
==Items==
===Cold Rock===
==Pokémon==
===Generation I===
Wild Pokémon Encounter DataPokémon Red and Blue Disassembly Wild Encounter Data - PretPokémon Yellow Disassembly Wild Encounter Data - PretPokémon Blue (Japanese) Wild Encounter Data - Shinyfinder
====1F====
====B1F====
====B2F====
====B3F====
====B4F====
===Generation III===
====1F====
====B1F====
====B2F====
====B3F====
====B4F====
===Generation IV===
====1F====
====B1F====
====B2F====
====B3F====
====B4F====
===Generation VII===
====1F-B2F====
====B3F====
====B4F====
==Special encounters==
===Generation I===
An appears on B4F on the first visit.
===Generation III===
An appears on B4F on the first visit. If run from, it respawns upon leaving the area.
===Generation IV===
An appears on B4F on the first visit. If defeated or run from, it respawns after entering the Hall of Fame.
===Generation VII===
An appears on B4F on the first visit. If run from, it respawns after entering the Hall of Fame.
==Trainers==
===Generation II===
====Cinnabar Gym====
===Generation IV===
====Cinnabar Gym====
====B2F====
===Generation VII===
====1F====
====B1F====
====B3F====
==Differences among generations==
In Generations , , , and this is the home of .
In Generations and IV, the destruction of Cinnabar Island causes Blaine to move his Gym to the Seafoam Islands.
In , while Blaine's Gym is still located in the east cave, Articuno can be found here as it was in Generations I and III. As soon as the walks into the east cave, there is a ladder that leads to an upper level where Blaine's Gym is located. There is also a set of stairs leading to a lower level in the islands just past the ladder. The Gym is much bigger than its Generation II counterpart as it sports a brand-new puzzle with junior Trainers. The interior of the island received a massive redesign as well. The cave section of Seafoam Islands uses the same music as Johto dungeons such as Ice Path, as opposed to the music used in Kanto dungeons. Also, unlike previous generations, there are three Trainers within the islands; two s and one .
==Layout==
Version	1F 	B1F 	B2F 	B3F 	B4F
 	 	 	 	 	
 	 	 	 	 	
 	 	 	 	 	
 	 	 	 	 	
 	 	 	 	 	
 	 	 	 	 	
 	 	 	 	 	
  	 	 	 	 	 
===Cinnabar Gym===
==Preview==
File:HGSS Seafoam Islands-Morning.png|Morning (Psyduck)
File:HGSS Seafoam Islands-Day.png|Day/Evening (Dewgong)
File:HGSS Seafoam Islands-Night.png|Night (Golduck)
File:FL Seafoam Islands.png|In FR/LG
==In the spin-off games==
===Pokémon Pinball===
In , Seafoam Islands appears on the Red table; catchable Pokémon include , , , , and .
===Pokémon Trading Card Game Pocket===
In Pokémon Trading Card Game Pocket, the Seafoam Islands are depicted in the special illustration rare print of the card, along with , , , and .
==In animation==
===Pokémon the Series===
In the dub, the recurring location (Japanese: ビンヌ Binnes) derives its name from the Seafoam Islands. However, this beach resort has no relation to the icy Seafoam Islands that appeared in the games.
====Pokémon the Series: Ruby and Sapphire====
In The Scheme Team, Agatha asked Scott if he had managed to find any strong s in the Seafoam Islands. In Queen of the Serpentine!, Metallica Island is mentioned to be located past the Seafoam Islands; however, it is incorrectly referred to in the dub as Seafoam Island.
====Pokémon Journeys: The Series====
In Battling in the Freezing Raid!, and Goh visited the Seafoam Islands to find an , which Goh needed to face in a Raid Battle to clear a Project Mew Trial Mission. Along the way, they encountered Horace and , who joined them in the Raid Battle once Articuno was found. While they were unable to defeat Articuno, they fared well enough to pass the mission.
===Pokémon Origins===
 was briefly seen visiting the Seafoam Islands in File 4: Charizard, where he caught .
==In the manga==
===Pokémon Adventures===
========
The Seafoam Islands first appeared in You Know... Articuno, where arrived there with Misty. He then traded his for her Gyarados, after which Misty left on her . Later, while walking on the island, Red and spotted Team Rocket members attempting to capture . Red fought against their , but in the middle of the fight, his new Gyarados's past trauma of being experimented by Team Rocket caused it to go out of control. This gave Muk an opening to attack Red, until it was by Articuno to save him. With Gyarados calming down as well, Red considered the battle won. However, unbeknownst to him, Articuno had spent so much energy to save him that Team Rocket succeeded in it soon afterwards.
========
In Extricated from Exeggutor, briefly stopped at Seafoam Islands while crossing the sea with Pika. During her brief stay, she encountered a wild , which was having trouble finding its nest in a forest. Eventually it turned out that the "forest" was actually just a mass of migrating and . Yellow then called , who told her that the unnatural migration was likely a sign of the Pokémon sensing an upcoming disaster, foreshadowing the Elite Four's attack on the Kanto region.
===Pokémon Zensho===
The Seafoam Islands appeared in Cinnabar Island. first passed by them on his way to Cinnabar Island. While doing so, he the he had received from Misty. He also caught a sight of Articuno, but it flew off before he could catch it. He then also met Blaine, the Gym Leader of Cinnabar Island.
After defeating Blaine at the Cinnabar Gym, Satoshi agreed to help him catch Articuno. With the help of Satoshi's 's , Blaine was able to catch the Legendary bird for himself.
==Trivia==
* In the Japanese versions of the Generation I games, , Let's Go, Pikachu!, and Let's Go, Eevee!, a on states that the Seafoam Islands used to be two islands, implying that they are currently considered a single island, which is consistent with the games depicting one continuous landmass at high tide. This is also consistent with how they are portrayed in Pokémon Adventures and in . However, in the English versions, the Picnicker's line is changed to state that the Seafoam Islands used to be a single island.
* In , has increased encounter rates when walking on 1F, B2F, and B3F, while has increased encounter rates on B1F and B3F and has been made available on B2F and B4F. Both are also available and quite common when fishing on B3F and B4F. This is likely a reference to Ash's Kingler, which was caught as a Krabby.
* Enoshima, the likely reference point for the Seafoam Island, has a legend associated with it that further within the Iwaya Caves is an ice cave connected to Mt. Fuji; this is likely what inspired the Seafoam Islands' frigid nature, and connection to Articuno.
==In other languages==
==References==
==Related articles==
Category:Kanto locations
Category:Red, Blue and Yellow locations
Category:Gold, Silver and Crystal locations
Category:FireRed and LeafGreen locations
Category:HeartGold and SoulSilver locations
Category:Let's Go, Pikachu! and Let's Go, Eevee! locations
Category:Pokémon Pinball locations
Category:Islands
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es:Islas Espuma
fr:Îles Écume
it:Isole Spumarine
ja:ふたごじま
zh:双子岛