Manafi is a legendary in the 4th generation. With Mew, Celebi, and Jirachi, so comes Manafi. It appears in movie 9: Pok'emon Ranger and the Prince of the Sea: Manafi!
Like the other legendaries, there is a special method of obtaining it.
For the guide to obtaining Manafi, go here...
http://serebii.net/diamondpearl/manafi.shtml
[center]
Signature made by me. Do not steal. Or else.
Fads are idiotic.
Fads are idiotic. Fads are idiotic. Fads are idiotic. Fads are idiotic.