The Sandworms

As I stroll along the water's edge
Trying hard not to step on the noble sandworms
I see the holes where they have arisen
Their circle swirls in the sand
As a child I thought they were dead
Thousands of lives sacrificed to the sea
Why surface I pondered
As I felt underfoot their fragile bodies
Now I know that they are not dead
They are merely sleeping
So now I tread very carefully
On the water's edge
And as I observe their circle swirls
Of perfect patterns in the sand
The sandworms art
I wonder whether they can feel
A footstep
Have they evolved to withstand
A single tread?
Probably