The Gates of the Sea

Migration and Rescue at the Edges of Europe

by Luna Vives  

The Gates of the Sea explores how the Spanish government is reclaiming search and rescue assets to keep migrants out of its territory — and how rescue workers resist becoming border enforcers.

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  • September 2025
  • ISBN: 9781773637662
  • 228 pages
  • $32.00
  • For sale worldwide
  • EPUB September 2025
  • ISBN: 9781773637679
  • $31.99
  • For sale worldwide
  • PDF September 2025
  • ISBN: 9781773637686
  • $31.99
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About the book

The Gates of the Sea examines the paradoxes of maritime search and rescue at Europe’s frontier. Focusing on Spain, Luna Vives explores how governments have redefined maritime rescue systems towards border control. Unlike other European countries, Spain chose not to assign this responsibility to a militarized state security force, but to a civilian agency whose workers often liken themselves to firefighters of the sea: they are dedicated to saving lives, not enforcing borders. Caught between their duty to protect life at sea and government efforts to transform them into border enforcers, rescuers have pushed back, primarily through their anarcho-syndicalist union, the CGT. Committed to border abolition and international solidarity, the rescuers’ struggle positions them within a global movement of resistance to the politics of organized abandonment along the external borders of the European Union. Vives’ revelatory, deeply researched and accessible book grapples with both state methods of control and containment and, crucially, ways in which solidarity activism can thrive in unexpected places.

Activism & Social Movements International Politics Labour & Unions Sociology

What people are saying

Nandita Sharma, professor and graduate chair, University of Hawai’i

“Nation-states have pushed the violence of their borders into the sea, causing a tidal wave of misery and deaths. It is poor, negatively racialized people who are increasingly left to die. This study of the small Spanish maritime agency, SASEMAR highlights the efforts of its workers and their anarcho-syndicalist union, the CGT, to keep their mandate of universal rescue. Not all people have abandoned ‘migrants’ to the sea.”

Jamie Liew, professor, University of Ottawa

“In this meticulously researched account, The Gates of the Sea explores the tensions between militarized border control and a universal approach to search and rescue at sea. Providing a historical and socio-legal context, the book traces the colonial, labour, class and economic forces that shape ideas that the sea can and should be conquered. Luna Vives provides us with case studies that clash, leaving us to ask who deserves the ethical and moral imperative to be saved in the open waters. An important work to read in our times to understand how the EU and especially Spain treats movement of people, whether migrants, tourists or citizens, differently, and how borders are a true fiction.”

Maurice Stierl, Institute for Migration Research and Intercultural Studies, Osnabrück University

The Gates of the Sea is a truly remarkable book. With expertise, experience, and skill, Luna Vives weaves together her impressive findings and offers a serious advance in state-of-the-art research regarding the evolution of the Spanish Search and Rescue system in the context of sea migration.”

Petra Molnar, Associate Director, Refugee Law Lab, York University and author of The Walls Have Eyes: Surviving Migration in the Age of Artificial Intelligence

“A book such as this will flourish in the world. Vives’ writing style bridges deep research and theoretical underpinnings with real world examples.”

Sebastian Cobarrubias Baglietto, Universidad de Zaragoza

The Gates of the Sea inserts the story of rescue not only into that of borders, migration and practices of externalization, but also the parallel and intersecting story of the geopolitics around oceans, and the history of both rescue as well as international law in that environment.”

Author

Luna Vives

Luna Vives is a political geographer and associate professor in the Department of Geography, Université de Montréal. She has a background in sociology (Universidad Complutense de Madrid), geography (University of British Columbia) and social work (McGill). Her research explores how governments in the European Union and North America use borders to filter people and exclude certain groups of migrants. She has studied the situation of unaccompanied migrant children, the transnational mothering practices of Senegalese women living in Spain, the use of the “crisis” framework to push forward radical and costly changes to migration and border policy, and the standardization of maritime search and rescue systems in Europe. Her work has been published in several academic journals, including Geopolitics, Political Geography, the Journal of Ethnic and Migration Studies, Environment and Planning C: Politics and Space, International Migration, Criminologie and the Journal of Borderland Studies. She also contributes regularly to print media and radio. Her current research focuses on the use of drones and atmospheric and low earth orbit satellites to watch over the border.

Contents

  • Chapter 1: Sea Migration and the Politics of a Manufactured Crisis
  • Chapter 2: Defining Safety, Jurisdiction, and Responsibility at Sea throughout the 20th Century
  • Chapter 3: The Origins of Salvamento Marítimo
  • Chapter 4: The Western Mediterranean
  • Chapter 5: The Canary Islands
  • Chapter 6: The Rescuers’ Union: Resistance from Within
  • Chapter 7: Epilogue: Death, Resistance, Hope

Buy Individual Chapters

Chapter 1: Sea Migration and the Politics of a Manufactured Crisis
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Chapter 2: Defining Safety, Jurisdiction, and Responsibility at Sea throughout the Twentieth Century
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Chapter 3: A Brief History of the Spanish Maritime Search and Rescue System
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Chapter 4: The Spectacle of Militarization and Abandonment in the Western Mediterranean
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Chapter 5: The Canary Islands: A Stealthy Takeover of Maritime Search and Rescue by the Military
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Chapter 6: The Rescuers’ Union: Resistance from Within
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Chapter 7: Death, Resistance, Hope
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