You have to play black puffle rescue but you have to be a member
Chat with our AI personalities
You will get the key when you have rescued the black puffle in puffle rescue three times it does not work
at the black puffle rescue at the mine
On the black puffle rescue get the puffle and wait there until you see a squid shadow and then follow it but keep walking into the bubbles so you don't sink and then the shadow will lead you into a secret place and find the key! that's all
Play the black puffle rescue and follow the Shadow of the octopus and then you are in the secret room and you have the key.
well u cant FIND it u have to play puffle rescue! u need to be a member to get it though.......it is the black puffle (beat the whole game=get the key!) hope this helps!!!! :)