The other night I had a dream that we went snorkeling from a boat, and they let us off to look around under a roof that provided shade. Very weird. I looked around the “reef” and discovered that it was molded concrete. It was not pretty, but there were critters scooting around that if they had been in the air would have been relatives of pill bugs and millipedes. For a while I was offended that they took us to a concrete formation that I thought the dive company was passing off as “real,” but then I got used to it.