This series offers a comparative view of how five Commonwealth coastal nations – Guyana, Kiribati, Papua New Guinea, Tonga and Tuvalu – are experiencing and responding to rising sea levels, to which they are acutely vulnerable.

Drawing from in-depth examinations of each country's adaptation measures, the reports identify transferable good practice and common constraints that must be overcome, and makes cross-cutting recommendations both for Commonwealth member countries and the Commonwealth Blue Charter programme that provides technical assistance to them.