Fin in a Waste of Waters

"These moments of escape are not to be despised. They come too seldom....Leaning over this parapet I see far out a waste of water. A fin turns....I note under 'F.,' therefore, 'Fin in a waste of waters.' I, who am perpetually making notes in the margin of my mind for some final statement, make this mark, waiting for some winter's evening." (from Woolf's THE WAVES)