I am trying to remember a sci-fi novel I read in the 1980s.
- I think it was published in the 1980s. My dad tended to buy new books and this was one of his I read.
- It takes place in the future on a mostly ocean world.
- There are no aliens.
- The human society's growth is stunted by its limited population (maybe a million or two? It was in the millions, maybe it was tens of millions). This seemed to be an important point.
Maybe they were trying to get off it? I think it was some sort of colonization attempt, or at least a colony ship that ended up there.
It seemed they didn't have contact with the rest of the humans in the universe.