Where do you find Ditto in Pokemon Emerald?

Well,if you have defeated the elite four, go to the fossil maniacs house, with the national pokedex, then his tunnels are complete, enter the newer one, found at the end of the first one, and youi will meet loudreds level 35-40, whismurs, and dittos 36-43. You are welcome for the help there. now also if it has been seen you can get it via wifi connection, or from a friend. Sincerely, Truly Shady yet Strangely Anonymous Poke' Trainer= ---> (=8^[)<-3