Floaty Fluff

Floaty Fluff is a kind of plant that appears in Super Mario Galaxy, and it's sequel, Super Mario Galaxy 2.

Super Mario Galaxy
Floaty Fluff first appears in Gusty Garden Galaxy as an item that must be used to reach other planetoids. In order to use them, the player must spin around them, then jump into them. The player can shake the Wii Remote up to 3 times to boost up higher. Jumping while hanging onto one will result in falling.

Super Mario Galaxy 2
Floaty Fluff reappear in Super Mario Galaxy 2, in Honeyhop Galaxy and Bowser's Galaxy Generator and are used the same way as the first game.