you need to build a bridge. You do this by getting help from bidoof.
to get to the beach zone on poke park wii you have to go to the meeting place and find corphish at the gate once you have found corphish go through the gate and you will be at the beach zone
Well you get it at the beach zone
On the island where gyarados attraction is
Talk to Electabuzz, Misdreavus then Driftblim and when you've done that talk to Corphish and he will let you in. =) POKEPARK ROCKS FTW! ;)
To reach Gyarados in the Beach Zone of PokéPark, you need to first complete the necessary tasks and challenges in the area. Look for the entrance to the Gyarados area, which is often guarded by other Pokémon; interacting with them may require you to win battles or complete mini-games. Once you've cleared the requirements, you can approach Gyarados and engage with it to unlock the encounter. Be sure to explore the Beach Zone thoroughly to find any hidden paths or items that may help you along the way.
Rhyperior is in the lava zone with his attraction.
manaphy will be at eathier the beach zone or the iceberg zone if you talk to wingullshe probaly will appear.
Go to the entrance to the Granite Zone after you beat the game.
u battle it in the cavern zone
You can be friends with a multiple of the same Pokemon if you talk and play with one for example Starly if you play with him even in the other zones you willl be friends HOPE THIS HELPS
when you apply the darkrai cheat to poke park you have to go to the haunted zone and go inside the haunted house and go near the piano where mismaguis is and look around and darkrai should be there
you can battle chimchar either in the medow zone when you start a new game and chimchar can also be found at the lava zone