There are deposits of sand in places along my favorite woodland path. Seas covered this land once, the rocks hold a record of that.
Sand was mainly bits of quartz and garnet, iron and other minerals that did not get swept away in the flowing waters. At least that is what we learned in Science class,all those years ago. Then I saw these wonderful pictures by Gary Greenburg.
Shards of coral, and the skeletons and shells of small creatures, tiny wonders the symmetry left behind by those we share this planet with.