Perhaps this is actually a vernal pond, and not a lagoon - I don't know.
I cropped this tighter and tighter this morning, and I think I have the composition that I finally want. I am not totally content with the colors, and I have not yet come to terms with a decision regarding the issue black and white or color.
I hope I don't bore the viewer with the many variation of this image. I am attempting to share my process, and what I have posted over the past few days reflect that process.