I think a lot about the constructed/imposed nature of the borders of nation-states but I'd never really given much thought to the construction of sea borders and the island nation. If I thought about it at all I guess I just took it for granted that the sea forms a kind of natural border -- obviously a border that's rigidly policed and reinforced, but a natural barrier all the same. it never hurts to be reminded that 'commonsense' is deeply ideological. Perera grounds her analysis in a look at Indigenous concepts of land and sea. she demonstrates that the sea wasn't historically seen as something radically, dualistically distinct from land, nor as unincluded in country, nor as a natural barrier to movement or contact with other peoples. she moves on to look at how colonial Australia has been constructed as a self-contained, discrete, bounded island nation, and how this plays out in Australian race and border politics today. Basically, it's super relevant and topical and makes a lot of fresh connections. Plus it's a pleasure to read, Perera is not a flashy stylist and it's hard to pull out quotable quotes but I really enjoyed her writing craft. Definitely recommended for anybody who's interested in border politics or Australia.