I have the guide, But I can't find the room keys to retreive the scanner..

Go into the middle cabin on the lower deck of the ship; you should see a puddle with a dive spot. Dive down and resurface at the other area of light. You should now see the six rooms; one of them has the Scanner. One of the doors should be open already; go in that cabin, memorise where the shiny objects are, and investigate them. One of the objects is a Room Key; the others are trash. The last room you go in will have the Scanner.

You need the HM07 Dive.

When you get to that place where there are six doors there is one that's unlocked. You can find another key in there. Then go to the room that key opens and you find another key and so on. It's really easy.

Once you enter a room, you should notice that a couple things might sparkle. If you need help finding an item, exit and enter the room again. Or, I think you can use the item finder.

I forgot. One of the sparkling items is a key, and once you obtain all the keys and go into the last room and obtain the storage key or whatever, you can get a luxury ball in that room.

You don't get a scanner once you get all the keys. To get the scanner, you have to exit the room, go down and use surf, dive down and out of the underwater room, use dive at the light, exit that room, and go UP, I repeat, UP the stairs.

Now, Go around that little Island- room the tuber runs around and go up to the mat and exit the place. You'll be in a place on the ship with all kinds of holes. But, to your right, I think, there are stairs, and blocking one side of the stairs is a crack.

But, on the other side you have access to. So, go up those stairs and enter that one room you see. There will be this scientist guy and an item. Pick up the item and viola! You have the scanner.

If I get these items mixed up, such as the scanner being in the storage room and the luxuray ball in the room where the scientist is, forgive me because the day I did all this is kinda vague.

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Watch for the sparkle in the room and when you get to the others there will be more things so you have to look around.

When you enter the rooms, observe carefully. Shiny objects scattered shine but once. The keys and certain items are there. Itemfinder doesn't work here...

YOU need the hm dive you see the room with water right dive their

Go into doors that are unlocked. Each key unlocks another door 'till you unlocked them all. When you go into a room notice some shineyness and go click where you saw the shines. Sometimes it will be trash or the key.