My first thought on this one was the surfer himself (and how pleased I was that I actually caught him). Is that another surfer way up and to the right? Looking further, the line of the wave points to the tallest buildings on the beach (is that a factory or a highrise???) and lastly connects with the clouds in the sky. I did play with some filters and colors to bring out the sharpness of texture of the surface of the water and define the edge of the cloud.