Loopdeeloop Galaxy

The Loopdeeloop Galaxy is a galaxy in Super Mario Galaxy, and is located within the Terrace. This galaxy is basically a long flow of water across the sky where Mario plays Manta Ray Surfing. It is inhabited by Penguins, most of whom cheer Mario on from the sidelines. This galaxy doesn't have any enemies at all.

Surfing 101
Surfing 101 is the only level in this Galaxy, which Mario rides a Manta named Ray along the Loopdeeloop Galaxy to earn a Power Star. The course contains a 1-Up in addition to a handful of Gold Coins. This level appears to be similar to Blooper racing in Super Mario Sunshine, in which Mario rides a Blooper in Ricco Harbor.