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The governance of marine biodiversity in areas beyond national jurisdiction (BBNJ) lacks a legal framework that would ensure the conservation and sustainable use of the oceans. In order to fill this gap, governments have been negotiating a new treaty under the United Nations Convention on the Law of the Sea. Negotiations have been afflicted by polarisation between two principles: The 'Freedom of the High Seas' (FOS) and the 'Common Heritage of Humankind' (CHP). Instead of discussing the CHP from a purely legal perspective, we examined, through an ethnographic lens, how it has become a practice of contestation: it is used as a tool and negotiation technique to challenge deeply rooted inequalities in the current world order. The CHP could make a difference if it was integrated into the text as a general principle committing all states to protect and preserve BBNJ for future generations -regardless of their imminent economic value as commercial assets.

Measures related to the COVID-19 pandemic have indefinitely postponed in-person formal international negotiations for a new legally binding instrument under the United Nations Convention on the Law of the Sea on the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction (BBNJ). As a result, online initiatives have emerged to keep informal dialogue ongoing among both state and nonstate actors. To continue our research on the BBNJ process, we adapted our methodology and conducted a survey in May 2020 exploring the impact of COVID-19 on respondents’ BBNJ-related work and communication. This research note identifies online initiatives and communication channels set up to maintain negotiation momentum and examines the challenges and opportunities of digital diplomacy for multilateral environmental agreement making, as well as the study thereof. We discuss future avenues for global environmental politics research and conclude that digital ethnographies provide an entry point to study some of these dynamics but need to be adapted to the study of negotiation settings and the specific context of multilateral environmental diplomacy.

Over one hundred governments are currently negotiating a new legally binding instrument for the conservation and sustainable use of marine biological diversity in areas beyond national jurisdiction (BBNJ). The new agreement is to address four broad themes: marine genetic resources (MGRs); area-based management tools (ABMTs), including marine protected areas (MPAs); environmental impact assessments (EIAs); and capacity building and the transfer of marine technology (CB&TT). Although a large corpus of scientific BBNJ literature exists, a comprehensive overview and critical analysis of the academic debate is currently missing. This systematic review seeks to fill this gap by examining the main priority topics and recommendations in a sample of 140 multidisciplinary, geographically diverse publications. As an up-to-date summary and analysis, it is intended for researchers from diverse academic disciplines in the natural and social sciences, policy-makers, and practitioners. It untangles the complex BBNJ negotiations, highlights the policy relevance of existing work, and facilitates links between science, policy, and practice. It presents recommendations made in the literature sample for each of the four package elements of the future treaty and identifies four overarching themes: ocean connectivity, institutional design, the role of science, and digital technology. This paper identifies two important gaps that need to be addressed if we are to conserve marine biodiversity in international waters: the science-policy interfaces and the need for transformative change.

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