Underwater Living
James Meek, 5 January 2023
“... brass bolt screwed to the floor inside a shabby red and white hut on the end of a pier in Newlyn, Cornwall. The bolt head is 4.75 metres above the average level of the sea, as measured every hour over the six-year period between 1915 and 1921. Oceanographers refer to this definition of sea level as ODN, which stands for Ordnance Datum Newlyn; when planners ... ”