You will get to access the place behind the door in the Mermaid Cove.
b uy a blue puffle then touch the black thuing onn the door
What you have to do is you have to get a key from Gary and then go to the door and unlock it with the key! but choose wisely, or else you have to get another key from the drawer!!
be a member and go on black puffle rescue get the key and unlock the door /this may take a while/.
by ?? you have to be a ninja to get into it
Walk through the door
there isent one
November 2012.
depends what door your talking about mate. there is a door almost everywhere
If you are a member of club penguin and have a key to the door, u can go into the door at the right. Inside, there is a underwater mine that u can get gems& a new background.
You have to become a member of Club Penguin first! Then go to the Stage and click on the Backstage door. Its Easy.
technically yes