Seafoam Islands

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Seafoam Islands ふたごじま Twin Islands
Location:	Route 20
Region:	Kanto
Generations:	I, II, III, IV
File:Kanto Seafoam Islands map.png Location of Seafoam Islands in Kanto.
Pokémon World Locations

The Seafoam Islands (Japanese: ふたごじま Twin Islands) are a pair of islands that are situated on Route 20. The two islands are shaped the same, as if they were twins.

In the games

Seafoam Islands hosts the Cinnabar Gym in Pokémon Gold, Silver, and Crystal

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 involving using Strength to move boulders to block the flow of water need to be solved.

The Seafoam Islands is the only known roost of the Legendary Pokémon, Articuno. It's located on the very lowest floor of the caverns under the islands. It is also where Misty comes to train.

In Generation II and IV, the destruction of Cinnabar Island causes Blaine to move his Gym to the Seafoam Islands.

In Pokémon HeartGold and SoulSilver, Articuno can be found here like before while Blaine's Gym is located in the east cave. As soon as the player walks into the east cave, there is a ladder that leads to an upper level where Blaine's Gym is located. There is 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. Strangely enough, 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 of them are Boarders and the other is a Skier.

Pokémon

Generation I

1F

Pokémon Games Location Levels Rate Seel R B Y Cave 30 25% Horsea R B Y Cave 28-30 20% Krabby R B Y Cave 28-30 20% Krabby R B Y Cave 25-27 30% Shellder R B Y Cave 28-30 19% Staryu R B Y Cave 28-30 19% Slowpoke R B Y Cave 30 15% Slowpoke R B Y Cave 28 5% Slowpoke R B Y Cave 28-30 15% Zubat R B Y Cave 21 10% Zubat R B Y Cave 9-36 50% Psyduck R B Y Cave 28 5% Psyduck R B Y Cave 30 15% Golbat R B Y Cave 29-36 5% Golduck R B Y Cave 38 1% Slowbro R B Y Cave 38 1% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B1F

Pokémon Games Location Levels Rate Zubat R B Y Cave 18-36 45% Shellder R B Y Cave 30 25% Shellder R B Y Cave 30 15% Horsea R B Y Cave 30-32 25% Krabby R B Y Cave 30-32 25% Krabby R B Y Cave 26-28 25% Slowpoke R B Y Cave 28-30 15% Slowpoke R B Y Cave 29 10% Psyduck R B Y Cave 28-30 15% Seel R B Y Cave 28-30 15% Seel R B Y Cave 22-26 5% Staryu R B Y Cave 30 15% Staryu R B Y Cave 30 25% Golbat R B Y Cave 27 10% Dewgong R B Y Cave 38 4% Seadra R B Y Cave 37 1% Kingler R B Y Cave 37 1% Kingler R B Y Cave 28 5% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B2F

Pokémon Games Location Levels Rate Seel R B Y Cave 30-32 40% Seel R B Y Cave 24 10% Zubat R B Y Cave 27-36 40% Slowpoke R B Y Cave 30-32 25% Slowpoke R B Y Cave 31 4% Psyduck R B Y Cave 30-32 25% Horsea R B Y Cave 28-30 15% Krabby R B Y Cave 28-30 15% Krabby R B Y Cave 27-29 20% Staryu R B Y Cave 30 10% Staryu R B Y Cave 28 5% Kingler R B Y Cave 28 10% Shellder R B Y Cave 28 5% Shellder R B Y Cave 30 10% Golbat R B Y Cave 30 4% Golbat R B Y Cave 27-36 15% Slowbro R B Y Cave 37 1% Slowbro R B Y Cave 31 1% Golduck R B Y Cave 37 1% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B3F

Pokémon Games Location Levels Rate Slowpoke R B Y Cave 31-33 40% Psyduck R B Y Cave 31-33 40% Seel R B Y Cave 31-33 25% Seel R B Y Cave 26-30 15% Zubat R B Y Cave 27-36 25% Golbat R B Y Cave 27 25% Shellder R B Y Cave 29-31 15% Horsea R B Y Cave 29-31 15% Krabby R B Y Cave 29-31 15% Krabby R B Y Cave 29-31 20% Staryu R B Y Cave 29-31 15% Seadra R B Y Cave 39 4% Kingler R B Y Cave 39 4% Kingler R B Y Cave 30 10% Dewgong R B Y Cave 37 1% Dewgong R B Y Cave 28-32 5% Surfing and Fishing Tentacool R B Y Surfing 20-40 70% Staryu R B Y Surfing 30 30% Magikarp R B Y Old Rod 5 100% Poliwag R B Y Good Rod 10 50% Goldeen R B Y Good Rod 10 50% Krabby R B Y Super Rod 25 40% Shellder R B Y Super Rod 15 25% Horsea R B Y Super Rod 15 25% Goldeen R B Y Super Rod 15 25% Staryu R B Y Super Rod 15 25% Staryu R B Y Super Rod 20-40 40% Kingler R B Y Super Rod 35 20% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B4F

Pokémon Games Location Levels Rate Horsea R B Y Cave 31-33 40% Krabby R B Y Cave 31-33 40% Krabby R B Y Cave 30 15% Shellder R B Y Cave 31-33 25% Staryu R B Y Cave 31-33 25% Zubat R B Y Cave 27-36 20% Slowpoke R B Y Cave 29-31 15% Psyduck R B Y Cave 29-31 15% Seel R B Y Cave 29-31 15% Seel R B Y Cave 28-32 20% Kingler R B Y Cave 32 10% Dewgong R B Y Cave 30-34 5% Slowbro R B Y Cave 39 4% Golduck R B Y Cave 39 4% Golbat R B Y Cave 32 1% Golbat R B Y Cave 27-36 30% Surfing and Fishing Tentacool R B Y Surfing 20-40 70% Staryu R B Y Surfing 30 30% Magikarp R B Y Old Rod 5 100% Poliwag R B Y Good Rod 10 50% Goldeen R B Y Good Rod 10 50% Krabby R B Y Super Rod 25 40% Shellder R B Y Super Rod 15 25% Horsea R B Y Super Rod 15 25% Goldeen R B Y Super Rod 15 25% Staryu R B Y Super Rod 15 25% Staryu R B Y Super Rod 20-40 40% Kingler R B Y Super Rod 35 20% Special Pokémon Articuno R B Y Event 50 Only one A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Generation III

Articuno in the Seafoam Islands

1F

Pokémon Games Location Levels Rate Psyduck FR LG Cave 26-33 55% Slowpoke FR LG Cave 26-33 55% Zubat FR LG Cave 22-26 34% Golbat FR LG Cave 26-30 11% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B1F

Pokémon Games Location Levels Rate Psyduck FR LG Cave 29-31 40% Slowpoke FR LG Cave 29-31 40% Zubat FR LG Cave 22-26 34% Golbat FR LG Cave 26-30 11% Seel FR LG Cave 28 10% Golduck FR LG Cave 33-35 5% Slowbro FR LG Cave 33-35 5% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B2F

Pokémon Games Location Levels Rate Psyduck FR LG Cave 30-32 40% Slowpoke FR LG Cave 30-32 40% Zubat FR LG Cave 22-24 20% Seel FR LG Cave 30-32 20% Golbat FR LG Cave 26-30 10% Golduck FR LG Cave 32-34 10% Slowbro FR LG Cave 32-34 10% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B3F

Pokémon Games Location Levels Rate Seel FR LG Cave 30-32 40% Psyduck FR LG Cave 30-32 20% Slowpoke FR LG Cave 30-32 20% Golduck FR LG Cave 30-32 15% Slowbro FR LG Cave 30-32 15% Zubat FR LG Cave 24 10% Golbat FR LG Cave 26-30 10% Dewgong FR LG Cave 32-34 5% Surfing and Fishing Seel FR LG Surfing 25-35 60% Horsea FR LG Surfing 25-30 30% Krabby FR LG Surfing 25-30 30% Dewgong FR LG Surfing 35-40 5% Psyduck FR LG Surfing 30-40 4% Slowpoke FR LG Surfing 30-40 4% Golduck FR LG Surfing 35-40 1% Slowbro FR LG Surfing 35-40 1% Magikarp FR LG Old Rod 5 100% Horsea FR LG Good Rod 5-15 60% Horsea FR LG Good Rod 5-15 20% Krabby FR LG Good Rod 5-15 20% Krabby FR LG Good Rod 5-15 60% Magikarp FR LG Good Rod 5-15 20% Horsea FR LG Super Rod 15-25 80% Krabby FR LG Super Rod 15-25 80% Gyarados FR LG Super Rod 15-25 16% Psyduck FR LG Super Rod 25-35 4% Slowpoke FR LG Super Rod 25-35 4% A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B4F

Pokémon Games Location Levels Rate Seel FR LG Cave 30-34 50% Golbat FR LG Cave 26-30 15% Golduck FR LG Cave 32-34 15% Slowbro FR LG Cave 32-34 15% Psyduck FR LG Cave 32 10% Slowpoke FR LG Cave 32 10% Dewgong FR LG Cave 34-36 10% Surfing and Fishing Seel FR LG Surfing 25-35 60% Horsea FR LG Surfing 25-30 30% Krabby FR LG Surfing 25-30 30% Dewgong FR LG Surfing 35-40 5% Psyduck FR LG Surfing 30-40 4% Slowpoke FR LG Surfing 30-40 4% Golduck FR LG Surfing 35-40 1% Slowbro FR LG Surfing 35-40 1% Magikarp FR LG Old Rod 5 100% Horsea FR LG Good Rod 5-15 60% Horsea FR LG Good Rod 5-15 20% Krabby FR LG Good Rod 5-15 20% Krabby FR LG Good Rod 5-15 60% Magikarp FR LG Good Rod 5-15 20% Horsea FR LG Super Rod 15-25 80% Krabby FR LG Super Rod 15-25 80% Gyarados FR LG Super Rod 15-25 16% Psyduck FR LG Super Rod 25-35 4% Slowpoke FR LG Super Rod 25-35 4% Special Pokémon Articuno FR LG Event 50 Only one A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Generation IV

Battling Articuno inside Seafoam Islands

1F

Pokémon Games Location Levels Rate Zubat HG SS Cave 26-28 30% Golbat HG SS Cave 30-32 30% Psyduck HG SS Cave 28-29 30% Golduck HG SS Cave 32 10% Special Pokémon Makuhita HG SS Hoenn Sound Unknown Unknown Absol HG SS Hoenn Sound Unknown Unknown Chingling HG SS Sinnoh Sound Unknown Unknown Bronzor HG SS Sinnoh Sound Unknown Unknown A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B1F

Pokémon Games Location Levels Rate Seel HG SS Cave 32-34 30% Golbat HG SS Cave 32-34 30% Psyduck HG SS Cave 26-28 16% Golduck HG SS Cave 32-34 14% Zubat HG SS Cave 28-29 10% Special Pokémon Makuhita HG SS Hoenn Sound Unknown Unknown Absol HG SS Hoenn Sound Unknown Unknown Chingling HG SS Sinnoh Sound Unknown Unknown Bronzor HG SS Sinnoh Sound Unknown Unknown A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B2F

Pokémon Games Location Levels Rate Seel HG SS Cave 33-35 30% Golbat HG SS Cave 33-35 30% Psyduck HG SS Cave 27-30 16% Golduck HG SS Cave 33-35 14% Zubat HG SS Cave 29-30 10% Special Pokémon Makuhita HG SS Hoenn Sound Unknown Unknown Absol HG SS Hoenn Sound Unknown Unknown Chingling HG SS Sinnoh Sound Unknown Unknown Bronzor HG SS Sinnoh Sound Unknown Unknown A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B3F

Pokémon Games Location Levels Rate Golbat HG SS Cave 34-36 30% Dewgong HG SS Cave 35-36 24% Golduck HG SS Cave 34-36 14% Psyduck HG SS Cave 31-32 12% Zubat HG SS Cave 31-32 10% Seel HG SS Cave 34 10% Special Pokémon Makuhita HG SS Hoenn Sound Unknown Unknown Absol HG SS Hoenn Sound Unknown Unknown Chingling HG SS Sinnoh Sound Unknown Unknown Bronzor HG SS Sinnoh Sound Unknown Unknown A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

B4F

Pokémon Games Location Levels Rate Golbat HG SS Cave 38-40 30% Dewgong HG SS Cave 37-38 24% Golduck HG SS Cave 37-38 14% Jynx HG SS Cave 38-40 12% Psyduck HG SS Cave 34 10% Seel HG SS Cave 34 10% Surfing and Fishing Seel HG SS Surfing 60% Horsea HG SS Surfing 30-40 30% Slowbro HG SS Surfing 35-50 10% Magikarp HG SS Old Rod 10 95% Krabby HG SS Old Rod 10 5% Magikarp HG SS Good Rod 20 60% Psyduck HG SS Good Rod 20 30% Krabby HG SS Good Rod 20 7% Horsea HG SS Good Rod 20 3% Gyarados HG SS Super Rod 40 60% Horsea HG SS Super Rod 40 30% Krabby HG SS Super Rod 40 5% Seadra HG SS Super Rod 40 5% Special Pokémon Articuno HG SS Event 50 Only one Makuhita HG SS Hoenn Sound Unknown Unknown Absol HG SS Hoenn Sound Unknown Unknown Chingling HG SS Sinnoh Sound Unknown Unknown Bronzor HG SS Sinnoh Sound Unknown Unknown A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.

Eyecatch

Morning

Day

Night

In FR/LG

Layout

Version	1F	B1F	B2F	B3F	B4F
Red
Blue
Yellow
FireRed
LeafGreen

In the anime

The Seafoam Islands in the anime.

The anime version of the Seafoam Islands is much more populated, and has a relatively large town. Ash goes there to train for the Indigo Plateau Conference where he meets Professor Westwood V, who is researching the evolution of Slowpoke. He also sees a surfer take the local challenge to plant a flag on a large rock sticking out of the ocean. Unlike the games, road/ground travel is possible by a bridge between the island and Fuchsia City. Ferries leave from here, and travel to Littleroot Town in the Hoenn region.

Later, Tracey and Ritchie go there to find Professor Oak after he is kidnapped at the TV Station.

In the Pokémon Adventures manga

The Seafoam Islands appeared in What a Dragonite and You Know... Articuno, where after being saved by Misty on Route 19 she swapped Red's Krabby for her Gyarados and she left on her Starmie. Suddenly when walking on the Island Red was attacked by a Muk that was from Team Rocket, they had also captured Articuno that got away in the end.

In other languages

• Spanish: Islas Espuma
• Italian: Isole Spumarine
• German: Seeschauminseln
• French: Îles Écume (Écume Islands)

Kanto Gym: Pewter City • Cerulean City • Vermilion City • Celadon City Fuchsia City • Saffron City • Cinnabar Island • Viridian City Towns: Pallet Town • Lavender Town League: Indigo Plateau Routes: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 Landmarks: Professor Oak's Laboratory • Viridian Forest • Diglett's Cave • Mt. Moon (Square) • Cerulean Cave • Cerulean Cape Rock Tunnel • Power Plant • Cycling Road • Rocket Hideout • Silph Co. • Pokémon Tower • Safari Zone/Pal Park • Seafoam Islands Pokémon Mansion • Victory Road • Tohjo Falls

This article is part of Project Locations, a Bulbapedia project that aims to write comprehensive articles on every location in the Pokémon world.