This book examines the impact and implications of Japan’s withdrawal from the International Convention for the Regulation of Whaling (ICRW), which came into effect in July 2019. In 1982 the International Whaling Commission (IWC) adopted a moratorium on commercial whaling which has been in effect ever since, despite the resistance of some countries, first and foremost Japan, Norway and Iceland, that engage in commercial whaling. As one of the key contributors to scientific research and funding, Japan’s withdrawal has the potential to have wide-ranging implications and this volume examines the impact of Japan’s withdrawal on the IWC itself, on the governance of whaling, and on indigenous and coastal whaling. It provides backgrounds and commentaries on this decision as well as normative and legal discussions on matters relating to sustainable use of resources, and philosophies surrounding whaling in different IWC countries. The consideration of other international environmental regimes, such as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), is also examined in order to determine the international ripple effect of Japan’s decision. The book reveals that this is not just a matter of whaling but one which has significant legal, managerial and cultural implications. Drawing on deep analyses of IWC structures, the book addresses core philosophies underlying the whaling debate and in how far these may influence environmental governance in the future. This book will be of great interest to students and scholars of environmental law and governance, biodiversity conservation and sustainable development, as well as policymakers involved in international environmental and conservation agreements.