Trade and the marine environment are inextricably linked. How is this link being woven together at the international, regional and national levels to ensure that a balance is struck between trade and the protection of the marine environment? The plurality of approaches and measures to protect the marine environment through trade and investment also raises important questions about their effectiveness and prospects. These are the key questions this book seeks to answer. The in-depth analyses in 18 contributions on different topics around three axes of reflection on trade and marine protection point to the need for greater cooperation within the international community to solve the world's growing challenges to ensure the sustainability of our lives and our planet.