La Mer

Yesterday we walked by the water.
Millions had come before us,
And millions will come after.
We left traces in the sand
that were there, right behind us,
and then confiscated by the stormy sea,
immediately after,
and informatively so:

We can visit.
But we cannot stay.

So the question remains:
Can we leave this place a little better
than we found it
and is it hard to do
or just hard to remember to do?