There are various environmental and legal challenges arising from offshore renewable energy activities which were not foreseen at the time of the negotiation of the 1982 United Nations Convention on the Law of the Sea (UNCLOS). This book explores how UNCLOS has evolved to adapt to these new challenges through legal mechanisms and examines what gaps may remain and how they should be filled. The book highlights the process of normative reinforcement in the regulation of offshore renewable energy activities whilst maintaining the fundamental balance of interests between the coastal State and other States.