Join this workshop to find out about Marine Spatial Planning (MSP) at national and international levels of governance. Discuss similarities and differences between Exclusive Economic Zones (EEZ) and Areas Beyond National Jurisdiction (ABNJ) with researchers from both sides. Jon Day was heavily involved in the management of the Great Barrier Reef Marine Park for 40 years and is an adjunct senior research fellow of James Cook University, Australia. Glen Wright is involved as senior research fellow in various aspects of marine policy and ocean governance, specialising in international negotiations, the high seas, and marine spatial planning at the Institute for Sustainable Development and International Relations (IDDRI), based in Paris. Their combined experience shall raise and answer questions regarding the learned lessons of in situ Marine Spatial Planning and about the destiny which may await the high seas.