As JMH knows, I love the sea. So here is one that I have tried to bring the rhythm of the waves into the flow of the poem:
The waves coming, crashing, against the shore
Steady, relentless, breaking on the sand
The smell of sea salt filling the air
The feel of cool water against my hand
The sound of gulls crying, far overhead
Steep ragged cliffs, towering tall
The light from a boat, far in the distance
And always, the waves that never stall
Soft white sand beneath my feet
Pieces of seashell scattered here and there
The endless beach, stretching before me
And the smell that lingers upon the air
The soothing, calming, neverending sound
The feeling of ultimate peace and calm
Blissful tranquility, wonderful solitude
Here by the seashore the world knows no harm