The oceans are not just vast expanses of blue, but dynamic political spaces shaped by complex regional dynamics. In this fascinating study, the authors advance a novel analytical framework for the study of the politics of global ocean regions. They shed new light on the complex interactions in ocean spaces such as the Arctic, Indo-Pacific or Indian Ocean. Written by leading experts in different ocean regions, the book demonstrates how important, yet diverse and complex regional maritime politics are. Its emphasis on the emergence, organization, and effects of global ocean regions provides a useful framework for guiding future research. The book will be essential reading for students and analysts interested in regionalism, the oceans, and the governance of global commons. Christian Bueger is Professor of International Relations in the Political Science Department at the University of Copenhagen, Denmark. Elizabeth Mendenhall is Associate Professor of Marine Affairs at the University of Rhode Island. She received her Ph.D. in International Relations from Johns Hopkins University in 2017. Rebecca Strating is Director of La Trobe Asia and Professor of International Relations at La Trobe University, Melbourne