I saved the image and played with it a little and in lightening it up a bit it becomes immediately clear where the blurring fails. There are rocks within the water that are also blurred, and these need to be as smooth and clear as the ones in the foreground (which also need to be lightened, as FastGlass mentions). Water taken over time will also smooth itself out, so where you have small breakers at the shoreline you would expect to see less ridge and more smooth white. Same holds for the small waves in the water.
You could spend a lot of time in Photoshop with the original file trying to make it look that way, but ultimately it would pale to the real thing.