Underwater Expedition Ad on Youtube!

There is an official ad for Club Penguin's next expedition, the Underwater Expedition! You can check it out on Youtube! You can dive into Club Penguin for an underwater adventure from January 26 to January 31! Be sure to keep an eye open for a 'rookie' penguin for his second appearance, since the April Fools' Party 2011. Can you guess who he is? Here is a hint: ??????