[m463]

I wonder if sand is only found on the intersection of water and land, or if it found throughout the ocean (just inconveniently under the water)

Also, on a humorous note:

Geologists: 'We May Be Slowly Running Out Of Rocks'

https://www.theonion.com/geologists-we-may-be-slowly-running...

[TheGallopedHigh]

I believe the sand theft taking place is done as the sand is good for construction. Namely jagged enough for aggregate (hence why the can’t use smooth sand from the desert). The shape of the sand is primarily caused by the motion of the water.