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Seafoam Islands
Location:	Route 19, Route 20
Region:	Kanto
Generations:	I, II, III
Pokémon World Locations

The Seafoam Islands (Japanese: ふたごじま Twin Islands) are a pair of islands that are situated between Route 20 and Route 19. The two islands are shaped the same, as if they were twins.

Contents 1 In the games 1.1 Pokémon 1.1.1 Generation I 1.1.2 Generation III 2 In the anime

In the games

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.

Misty comes to the islands to train. In Generation II, the destruction of Cinnabar Island causes Blaine to move his Gym to the Seafoam Islands.

Pokémon

Generation I

Generation III

Name	Games		Location	Levels	Rate
Zubat	FR	LG	1F B1F		34%
Golbat	FR	LG	1F B1F		11%
Psyduck	FR		1F		55%
Slowpoke		LG	1F		55%
Psyduck	FR		B1F B2F		40%
Golduck	FR		B1F		5%
Slowpoke		LG	B1F B2F		40%
Slowbro		LG	B1F		5%
Seel	FR	LG	B1F		10%
Psyduck	FR		Surf		4%
Golduck	FR		Surf		1%
Slowpoke		LG	Surf		4%
Slowbro		LG	Surf		1%
Articuno	FR	LG	Event	50	Only one

This list is incomplete. You can help Bulbapedia by expanding it.

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, 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. The islands as well have boats going 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.