From out of the ocean came they

Sunset, yesterday.

Extras: at first I thought of "If seven maids with seven mops swept for half a year ..." but then I saw that she was creating a huge, circular piece of sand art: a mandala, perhaps.

She worked for well over an hour and then rested, looking at her creation.

Later she flew a drone over it, made some minor adjustments and took some final shots. I thought she might wait for the tide to erase her work and complete the cycle, but she left before then. I would dearly like to know who she is and where I can see the drone coverage of her creation.

By the way, the sands really were that dark colour yesterday. Back to "normal" today.