I have not responded to the Weekly Photo Challenge recently. It had slipped me altogether. This week’s is about “structure.” It is also inviting us to observe, and look for little details we may have overlooked. So, here goes. I think I mostly have man-made structures here – one that I cannot identify! – but the web of stringy, yet purposeful mangrove roots always fascinates me. So, too, do waves, which have their own foamy structure as they break on the shore. As for the American sailor woman – when you are doing this kind of work you are always aware of the details of man-made structures.