The Sand Spiral Galaxy is a galaxy in Super Mario Galaxy, and the secret galaxy for the Garden Dome.
Choosing a Favorite Snack
He can either start the level by choosing the Bee Mushroom, but he can be forced to switch to the Boo Mushroom, or he can complete the entire first part of the level by only using the Boo form. It is right that he will be chased down by the Boos, but he will "hide" from the Magikoopa, while it will fire on him if he is in the Bee form, which can conduct him to death.
When Mario completes the first part of the level, he then moves to find a Rainbow Star to run quickly. The Power Star is on the top of the moon and that is the end of the level