Looking for pictures of shallow sandbeds

[Wy Renegade]

I'm looking for pictures of tanks (whole tank or area shot) that shows the following substrates for an article I'm working on.

Bare-bottom

Calcium Carbonate gravel

Crushed Shell

Deep Sandbed

Shallow Sandbed

and any alternative materials that individuals have used for substrate with an explaination of why it was chosen and the benefits it provides.

Pictures will be credited to the photographer of course.

Thanks