This includes agreements between individual countries and regional fishery agreements that cover the high seas also known as regional fishery management organisations (RFMOs). In the Antarctic, the fisheries sector is managed under a single international system. The key issues here concern the implementation of the ecosystem approach, the management of IUU fisheries, and the intensification of industrial fishing for krill, a small but protein-rich shrimp that lies at the centre of the Southern Ocean food web.