i have ruby but it may be the same in sapphire
if you get to the room that has the dive spot and dive go left in to the other room and use dive. there should be 2 rooms you can enter, the one with the trash cans blocking the way is important later, but you need to find the other one first that you can enter. It should be the bottem right one. Watch fo glitter spots, and check them all, or do it the hard way (on GBA it is hard to see if you have bad lighting) you can wonder the room pushing A in every spot. if you can see go to the glitter spot and press A you'll ether have trash or it'll be a key to the next room try all the glitter spots in the room till you find it then go to the door that maches the key number and do the same
As for room with 2 trash cans blocking, if you cant see flashes, dont worry about it. If you can then, once you obtain key for door left of that one, enter it so you can see the shiney spots, then enter room on left, it is joined with the rest of this room. This is the only way you can see the shiney spots however...
hope i helped i got my info from
http://pokegym.net/forums/showthread.php?t=822
Looker eventually gives you one
in that city, use surf into the water than in the cave at the center, u will need it.
It walks away and leaves it behind the galactic building after you talk to him.
after u beat the 7th gym leader go back to veilstone city and get the storage key of the team galactic guy standing outside the big headquarters he drops the key then u go into the warehouse and get the galactic key
To get into the Team Galactic HQ in Pokemon Diamond you will need the storage key the Galactic Grunt leaves behind, and the Dusk Stone. If you can't get the key, it may mean you have not completed a mission.
use it open the storage room .you eill get an item
You can find it in the sunken ship. Use the key's on the doors to get it.
It's the Pokéball in the lower left corner in the Captain's Office.
It depends what keys you are talking about. The only keys I can think of are the ones for the Abandoned Ship.
Yes you can. You have to go to every room on the abandend ship you can without dive
go in one room and sparkles will glitter up as soon as you go in room.Then go to the sparkles and you will find a key on one of them.NOTE one is in a bin
you get the key in the Pokemon center
its a trick its a trick
You don't. You use your recently found tube ability to roll under it. You obtain the tube ability by using Koops to grab the key on the other side of the trunk. Use that key to open the door to the shop in Twilight Town to get to the storage room. There are lots of small chests in the storage room, but the one you should be concerned about is the black one. It will ask for a key to open it. The key is in the abandoned shack on the Twilight Trail. Use that key to open the chest and the monster inside will curse you with the tube ability.
You Go to rockhopper's ship and then you go downstairs of the ship and there will be a room and it will let you in only if you have the key.
You have to find the key in the abandoned mansion.
Go to the abandoned ship which is east of Dewford town (or West of Slateport). You will need surf and dive. When you reach the abandoned ship, go inside, head downstairs, then enter the bottom middle room. In here, there is a diving spot. Dive underwater, then go along the hallway until you reach a big hole in the wall. Go through, then use dive to go back to the surface. Find the door that isn't locked and go inside. In each of these rooms, there will be a key to another room. If you don't see the initial "shine" indicating where the key is, use your itemfinder. The scanner is in room 2. Show the scanner to Captain Stern in Slateport near the SS Tidal, and he will allow you to choose either the Deepseatooth or Deepseascale. Each one evolves Clampearl to either Huntail (tooth) or gorebyss (scale) when traded. Good luck!