Ocean on Top

Light on Bottom... The light was artificial. Believe it if you can. I realise that for a normal person it's hard. Wasting watts to light up the outdoors is bad enough. Spending the world's limited power to illuminate the sea bottom, though - well, for a few moments I was too furious to think straight. My job has brought me into contact with people who were careless with energy, with people who stole it, and even with people who misused it; but this was a brand-new dimension!I was lower now and could see acres and acres of light stretching off to the north, east, and west until it blurred out of sight.
Acres and acres lighted by things suspended a few yards above the level bottom, things visible only as black specks in the centre of slightly brighter areas. Then I got my anger under control, or maybe my fear did it for me. I suddenly realised that if I hit bottom the way I was heading I might never be able to get back to the... Ocean on Top.