Reply To: how can i improve, ocean water, how many seconds and some problems

[cameraclicker]

This is going pretty much the same way as Bill’s edit

http://www.flickr.com/photos/54048679@N07/10312758994/

For sky, a CP filter works best at an angle to the sun.  It would cut glare off the ocean though, if you were getting too much reflection.   A split ND filter or a graduated one would be good for that scene.  I don’t bother with them because my sunset is full of apartment buildings.