I thought this was an interesting phenomenon. Wave-induced sand ripples, that were merging into a tide pool at the base of the cliffs at Rhossili on the Gower Peninsula, had curvilinear and compressed dendritic drainage channels in the narrow valleys between the ridges.
Jessica's Nature Blog 
I never get tired of patterns in sand made by wind or water.
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Thank you, CentralOhioNature, I can’t help seeing patterns everywhere and wondering how they have been created.
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These remind me of the ripples you used to get at Sandwich Bay. We would go cockling there, crawling in warm water and feeling the rippled sand under our knees and feet. I have heard that the cockles were killed off when the hovercraft started operating from Pegwell Bay to France.
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I still like to walk barefoot on the sand ripples at the beach. I think it must be very therapeutic – the effect of the ridges on the soles seems a bit like reflexology.
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Well composed Jessica, with the diagonal ripples in one direction, and the water edge in the other.
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Thank you, Adrian. I was fascinated to see the way that drainage patterns had developed, like miniature river systems, within the gullies between the sand ridges.
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