"Mare Nostrum" by Leora Niderberg Larissa Reismann
  

We imagine a new, fluid landscape in 2050, owing to the convergence of three factors: sea level rise; the death of carbon; and an exponential upward trajectory of human movement/nomadism.
In place of the soon-to-be-abandoned oil fields of the Mediterranean, we propose a floating infrastructural ribbon growing out into the sea which is self-generating, self-supporting, and self-sustaining. Rather than biding time in cramped, provisional refugee camps for decades, dweller-citizens may attach their floating homes to this communal backbone freely, and participate in an autonomous and borderless ecosystem based on care and renewable resources. Seawater is desalinated by evaporation and recondensed along the diagonal frame underwater; food is produced at the raised hydroponic level; above-sea level serves as a market and public space; and underwater, just above the pontoons which grant buoyancy, resides a material reuse facility for converting plastic waste to printable raw material for the structure’s continued growth.