The ocean is the life-support system of our planet. Covering 71% of the world’s surface, it is a vast and dynamic system that provides essential services for the livelihoods of millions of people. It provides food, raw materials, energy and transportation routes, as well as regulating our climate. Yet about 61% of the ocean lies beyond national jurisdictions, i.e. beyond the 200 nm Exclusive Economic Zones (EEZs) of coastal countries. ABNJ includes the High Seas and the seabed beyond the (extended) continental shelf of coastal States.

Significant progress has been made in promoting sustainable management of deep-sea fisheries and biodiversity in ABNJ. However, as our understanding of the vulnerability of deep-sea habitats, fish stocks and associated bycatch species develops, increased efforts are required. Deep-sea fishing grounds can include areas above continental slopes or isolated features under the ocean, such as seamounts, ridge systems and bank. The extreme conditions in deep waters make these places home to a truly unique array of wildlife.

In order to advance on the recognition of information and knowledge in decision-making, this report provides an overview of studies designed to contribute to improving deep-sea fisheries management and biodiversity conservation in ABNJ.