How do you find Cressilia in Pokemon Diamond Pearl and Platinum?

Answer 1

It is kind of complex to catch one, but you'll get it eventually. Okay, first, go to Canalave City and talk to the sailor. Ask him to bring you to Full Moon Island. Once you get there just walk till you see and entrance into a forest. Walk in and you WILL see a Cressilia, it'll flee from you and drop an item. Pick up the item and bring it to the sailor's sick son inside his house. You'll automatically give it to him and he'll wake up. On the other hand, you HAVE to search the Cressilia with your Poketch and when you encounter it randomly in the grass, (have a Dusclops, Dusknoir, Golbat, or a Crobat that knows Mean Look) use the move Mean Look and it cannot escape. Weaken it to red health and keep throwing balls at it till you catch it.

TIP: The best kind of balls to use are either Timer Balls, Ultra Balls, or of course a Master Ball, you will eventually catch it.