you can only get celebi by event or by trading. there currently isn't an event.
you use your dowsing maching in front of the hotel not on the beach other side
You cannot find the Pokemon Darkrai in Turnback Cave in the game Pokemon Diamond. Instead you can find him in Newmoon Island.
You find the HM Defog in the cave in solaceon town where you find the unknown
well you will need to complete the safari callange getg the teeth then give tham to the old man and he will give you surf and there is a differene between Pokemon platinum and diamond
their is a secret entrance to wayward cave under cycling road. moves required cut strength. items required bicycle.
It is under the bush in the yugugu cave
you use your dowsing maching in front of the hotel not on the beach other side
You would find it in Celestic Town.
YOU CAN'T GET CELEBI IN DIAMOND WITOUT MIGRATING
Celestic town shrine
You can get all the Pokemon in the cerulean cave where you find celebi below the cerulean cave.
The Elder in Celestic Town in the largest house (above the cave entrance)
The only game you can currently get Celebi in is Emerald version (until the Celebi event happens for HG/SS).
You can find it near celestic town in route 210 or 211.
go in the cave that shows pictures of dialga and palkia
go to celestic town, go near the cave, turn left.
You don't. Celebi or Serebii is unobtainable.