Secret Aquarium

The Secret Aquarium is a secret room in the castle that is all underwater. You must get all 8 red coins in the water to get a secret star. This area is one of the few areas that cannot be seen by going through a door. The Secret Aquarium can be found in the room of the castle with the Jolly Roger Bay painting in it. When you enter, walk forward a little bit, then turn around. You will see two black squares on the top right corner of the wall and the top left corner. One of these has a 1up in it, the other has the Secret Aquarium. Do a backflip into both squares, the left one for the 1up, the right one for the Aquarium. There are bubbles that give you more air in the depths of the water, and these are vital to your success of getting the secret star.