The Sand Is A Story

The sand on the shore, an endless puzzle,
A single grain, a lonely cloud but many together, a flock of birds.
The sand is an ever-changing chameleon,
On a hot day, it becomes the coals inside a furnace,
If cool it changes to the refreshing but comfortable temperature of a pool.
When wet, the sand becomes clay, easily moulded,
When dry, it is a fluid, seeping through your fingers.
The sandy shore, as important as the sea,
Without it, there would be nothing to store the water that spills from the ocean.
The sand is also a chest locked with a key.
Within it, there are countless treasures and values,
But they only reveal themselves if you care to look.