In the foreground, there was a huge mass of moss-covered volcanic rock, which appeared above the water only a few times a year when the tide was at its lowest level.
The diagonal lines of the volcanic rock bodies in the foreground forms a diagonal line which deflect the viewer's eye into the the glow on the right side. The cloud formation above adds balance to the overall composition.
Grad ND 3-stop 150mm filter for darkening the clouds to match with the black volcanic rock underneath.
Formatt HD Glass Solid ND 150x150mm 6-stop filter to slow down the exposure time, enough to blur the waves into a smooth water surface.
At about 2m from the camera with hyperfocal distance in mind to maximize both the foreground and the depth of the field.
Photo was taken in RAW and processed in Lightroom 4.