To get the key to the door on Club Penguin in the Mermaid Cove, you have to be a member and play Puffle Resuce. Then, choose the black puffle. Then, you stay where you are. Youw ill see a huge shadow, you must follow that and collect the air bubbles. It will lead you to a green area, then follow it until you find stiars. Onc eyou are down them, you collect the old key.
be a member and go on black puffle rescue get the key and unlock the door /this may take a while/.
chubbs
black puffle rescue game.find it.open the door.
Onceyou beat sensei click on the stone door outside.The Club Penguin Ninja Hideout is next to the outside dojo door. It is that rectangle stone with carvings on it.
one is at the town in a big wooden cup...one is one the ice berg in a tree.....one is in the snow forts in a bush.....one is in the beach above the door............one is in the plaza on the pirate puffle........one is in the hidden lake above the sign mermaid cove.....one is in the forest in a bush....And the last one is in ski village on the puffle with skeleton bones............ hope it helps by jenna li wixom
You will get to access the place behind the door in the Mermaid Cove.
be a member and go on black puffle rescue get the key and unlock the door /this may take a while/.
there isent one
Walk through the door
November 2012.
by ?? you have to be a ninja to get into it
Its in the Sunken Treasure Cove. Go to the red transporte door and the mermaid will give it to you once you have spoken to the tree guy.
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.
its in the sunken treasure cove. Go to the red transporte door thing (next to the blue one) and the mermaid will give it to you.
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