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We present the James Clerk Maxwell Telescope (JCMT) 850 μ m Legacy Release, containing uniformly reduced, coadded tiles, and catalogs of detected emission, for the 850 μ m data from all Submillimetre Common User Bolometer Array 2 (SCUBA-2) observations taken between 2011 February 2 and 2020 August 1. This release provides the fastest and easiest way to identify uniformly determined 850 μ m detections and calibrated fluxes for any position observed by the JCMT. The coadded observations include 11,722 hr of observing time and cover 1516 square degrees of the sky, with detections of contiguous areas of emission at better than 5 σ covering 2.46 square degrees of area. Within these regions 21,059 individual local maxima were detected. Fifteen tiles contain regions with a noise level better than 0.0025 mJy arcsec ^−2 . The data are gridded onto HEALPix tiles of ≈1° a side, using the HEALPix projection with pixels of size ≈3.″22. The coadds have been calibrated into units of mJy arcsec ^−2 using the standard date-varying SCUBA-2 flux-conversion factor (FCF) from Mairs et al. (2021). We then examined the accuracy of this calibration for our data set by calculating self-derived FCF values for our two most-used standard sources, finding a result within the expected errors but with a larger standard deviation of 9%. The coadds and catalogs can be searched and retrieved via the Canadian Astronomy Data Centre (project code: JCMT-LR). Combined catalogs of all detected regions and of all local maxima can be downloaded from the Canadian Advanced Network for Astronomy Research Data Publication Service (doi: http://doi.org/10.11570/23.0013 ), along with masks showing the full area observed in this release and the full area of detected emission.

Delegations are in the final stages of negotiating the proposed Agreement 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 Agreement or Agreement). The Agreement will have tremendous scope. Geographically it covers all ocean areas beyond national jurisdiction, meaning approximately 60 percent of the earth’s surface. Substantively it deals with a range of complex topics necessary for the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction, including marine genetic resources, sharing of benefits, measures such as area-based management tools, including marine protected areas, environmental impact assessments and capacity-building and the transfer of marine technology. Existing scholarship primarily explores the substantive choices for the Agreement; little examines its proposed institutional structure. This article critically assesses the competing positions advanced during negotiations for the Agreement’s institutional structure – the ‘global’ and ‘regional’ positions – and reviews the middle, or ‘compromise’ position adopted by the draft text. It suggests that both global and regional actors will be necessary to conserve and sustainably use marine biological diversity of areas beyond national jurisdiction, and that some form of coordinating mechanism is required to allocate responsibility for particular tasks. Two principles are proposed for use in combination to provide a mechanism to help coordinate Agreement organs (global) and regional or sectoral bodies, namely, the principles of subsidiarity and cooperation. These principles are found in existing international and regional structures but are advanced here in dynamic forms, allowing for temporary or quasi-permanent allocation of competences, which can change or evolve over time. This position is also grounded in the international law of treaties and furthers dynamic views of regional and global ocean governance by offering practical coordinating principles that work with the existing Agreement text.