It depends on if you're looking for national or Sinnoh Dex Pokemon.
For Sinnoh, battle every trainer and look in pokecenters for Pokemon eggs. To see Dialga, after the game, go see the old lady in celestic town after you defeat the Elite four.
For National, look on Serebii.net for Pokemon appearences and trade with your friends.
Remember, you can only trade via WiFi for Pokemon u have already seen
Pokemon #46 is Wormadam. If you need any other help go to www.pokemon.marriland.com On the side in the diamond and pearl section it has a pokedex option, click there and you will see all the pokemon.
You have to see every Shinnoh Pokemon then see professor Rowan.
You can see Garchomp from Cynhtia while you facing with her in the Pokemon league
Well I don't know what to do because I beat the 8th gym leader and beat the e4! So I seen so far 145 pokemon. Well I don't know what to do? In Pokemon pearl???
You don't.
You need to see all Pokemon in sinnoh
there are 150 kinds of Pokemon that you can see and/or obtain. Unless you have friend trade you Pokemon that you can only get in pearl to you, you'll never obtain them all. In Pokemon diamond and pearl all you have to do is see the Pokemon and you get its data unlike the older versions where you have to obtain them.
check marriland.com's pokedex it shows you all the Pokemon if you type the in the Pokemon you want to see.
you see all Pokemon then click the pokedex then see the Pokemon you want then click area on the pokedex hoped i didnt helped
you have to see all of them. i had trouble finding a wormadam holding trainer.
You have to see all the Pokemon in the Sinnoh Pokedex.
By Trading.
You battle people or look for them in the wild
check your national pokedex check serebii.net :)
Battle Every Single Character in the Game to meet all the Pokemon in Pokemon Pearl.
You can get the Pokemon in Sinnoh. If you go to Pokemon.com, you can see them.
on Pokemon pearl you only see 1