Oolitic aragonite sand
The natural formation through precipitation, sedimentation and possibly microbial activity of aragonite sand in the Bahamas surpasses anyplace else in the world. There are billions of tons of this type of sand material in reserve and millions of tons more created annually.
- Lawrence, Robert (23 August 2018). "The Mysterious Origin of Oolitic Sand". Hakai Magazine. Retrieved 24 August 2018.
- "Marine Aquarium Substrates – Materials & Methods".