On Pokemon Pearl, How do you get to the other two places on battle island?

get the secend dex,you fool

You first need to complete the sinnoh pokedex. Dont worry, you only need to see all of them, not catch them. If you still need the dialga pokedex entry, its in a book at cynthia's house.

the way to get these is to get the national dex i had a problem with this in platinum too;) if youre looking for manaphy, go to that rich dudes house and look at his book. for dialga, you'll get a message tellin you to go to that old ladies house in the tiny town, just speak to her and she'll show you. for any evolutions of starters or normal pokemon, go to www.seribii.net that guy can really help you out. if you have any other problems plz let me know. thx ;)

complete the dex!!! and if you want to no where to look at maniphy or what it is its in the manchans house and in a room where there is a book

get the secound dex then walk there fool