Birth Island (Japanese: たんじょうのしま Birth Island) is a location near Fortune and Quest Islands in the Sevii Islands, accessible in Pokémon FireRed, LeafGreen, and Emerald. It can only be accessed after downloading the AuroraTicket through Mystery Gift and sailing there by talking to the sailor in front of the Seagallop Ferries in Pokémon FireRed and LeafGreen, or by boarding the S.S. Tidal in Pokémon Emerald.
Unlike the other Sevii Islands, but like Navel Rock, Birth Island does not appear on the Town MapFRLG or PokéNav's mapE by default.
Deoxys is summoned on this island. The player must solve a strange puzzle, by following a moving rock, until Deoxys appears. If the player doesn't follow the shortest path to the next position of the rock, the rock will move back into its original position, resetting the puzzle.