you have to eat an eco-nut.
wynaut
Mirage island
the same way u get to mirage island in sapphire and ruby
WYnot so many wynots @.@
No the Pokémon Ruby and Pokémon Sapphire version of the Mirage Island is not in Pokémon Omega Ruby and Pokémon Alpha Sapphire however they made their own different variations of the Mirage Island concept but this time by creating more mirage islands that can appear at any time in the water routes or in the sky.
You cannot get to the island that is called Mirage Island in Pokémon FireRed. The island that is called Mirage Island was only created and can only be found in the Hoenn region and therefore can only be found in the games of Pokémon Ruby, Pokémon Sapphire and Pokémon Emerald.
you'll need a Pokemon that knows surf and a Pokemon that is mirage island sensitive but you don't know which Pokemon are, it is random. you can find out by going to the man in pacifidlog who is searching for mirage island. if he can see it, you have a Pokemon that is mirage island sensitive
Mirage island is extremely hard to get to. Each day, Mirage island gets assigned a random number. To get there, one of your party pokemons must have the same number as mirage island, making the chances very small. However, you can get there, and if you're as lucky to get there, you can catch a bunch of Wynauts there
Route 130, which is in the region Honen, which is in Pokemon ruby,sapphire,and Emerald.
go to a house in pacidolog where two men talk about mirage island the second guy randomly tells you if the mirage island appeared or not (if he says theres no mirage island you should wait until the next day) if he says that theres mirage island surf east (dont go to the fast currents take the other side) then in mirage island you well find wynauts n the grass and a really rare berry which you can receive only in mirage island
the Pokemon are random and the only Pokemon on the mirage island is wynaut and the only item is a lecie berry.
Mirage Island does not always appear. When it does, it does. It is found between Pacifidlog Town\Sky Tower.