Many thanks, Bing for this:
Who was the one doing the plonk, plonk?
It was a still quiet morning when I broke the stillness with my heavy running on the wooden jetty... plonk, plonk...
We sat down watching the boats passing us and heading to the open sea.
It was entertaining watching fishermen with their boats going out to work.
It was like watching people in their cars going to work and into the city traffic.
Except that the sea is huge and traffic is very much lesser.
We thought, "What a complacent and simple life of the fishermen".