there is widespread recognition that sea-level rise is a reality, it remains uncertain by how much and how swiftly the seas will rise. There are, however, growing concerns that sea-level rise is likely to outstrip past predictions and has the potential to accelerate. Among the many disastrous implications of sea-level rise for coastal and island States are the likely impacts of sea-level rise on national claims to maritime jurisdiction. This paper identifies and explores a number of key threats to national maritime claims. First, the tradi