Minecraft wiki entry for Sand, associated text: Naturally generated sand in a desert.
Naturally generated sand in a beach.
Sand as generated as a warm ocean floor.
Naturally generated sand in a snowy beach.
Naturally generated sand in a lukewarm ocean.
Naturally generated sand in a warm ocean.
Naturally generated red sand in a badlands biome.
Floating sand in desert biome before updating it...
... and after updating it.
A single floating sand block.
Another example of floating sand bug, this time above small water lake.
A lot of sand floating above a cave enterance.
A large amount of floating sand in desert, the torches were placed by a player.
A large amount of sand floating above a cave and being broken.
A large quantity of sand floating over a ravine.
2 blocks of sand floating with nothing below them.