By chance my window opened exactly above the light sand and I was awestruck. The image becomes intriguingly ambiguous and abstract without the sand. Looks great as is but it changes to something else when cropped there.
Thanks for the comments. People have volunteered quite a few intriguing comparison rorschach results, but to me it's a composition of lines and light and dark shapes at the beach. I spend enough time in this environment I see it as that only.