Moving sand

Moving sand is rapidly flowing sand that can push the player.

Super Mario 64 / Super Mario 64 DS
Moving sand debuts in Super Mario 64, where it only appears inside of the pyramid in Shifting Sand Land. It can push Mario off the platform if he stands on it.

Super Mario Galaxy
In Super Mario Galaxy, moving sand appears in Dusty Dune Galaxy. There are three planets that have moving sand. It can push Mario into obstacles like cactuses.

Super Mario Galaxy 2
In Super Mario Galaxy 2, moving sand appears in Slipsand Galaxy. It can push Mario into a Fire Chain or it can be used as a slope.