Seafoam Islands
The Seafoam Islands are a pair of islands (one island in the Japanese versions of the games and other media) that are situated on Route 20 in Kanto. The two islands are shaped the same, as if they were twins. In the Japanese versions of the Generation I games and Pokémon FireRed, LeafGreen, Let's Go, Pikachu!, and Let's Go, Eevee!, a Picnicker on Route 20 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 Pokémon the Series. However, in the English versions, the Picnicker's line is changed to state that the Seafoam Islands used to be a single island.
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