Hostname: page-component-857557d7f7-c8jtx Total loading time: 0 Render date: 2025-11-23T18:57:48.275Z Has data issue: false hasContentIssue false

The Prospects of the High Seas Treaty Decisively Reducing the Negative Biodiversity Impacts of Distant-Water Fishing Operations

Published online by Cambridge University Press:  14 November 2025

Shirley V Scott
Affiliation:
Professor of International Law and International Relations, University of New South Wales, Australia
Nengye Liu*
Affiliation:
Associate Professor of Law, Singapore Management University, Singapore
*
Corresponding author: Nengye Liu; Email: nengyeliu@smu.edu.sg
Rights & Permissions [Opens in a new window]

Abstract

International fisheries law has so far proven inadequate to prevent over-fishing on the high seas, a key cause of biodiversity loss in areas beyond national jurisdiction (ABNJ). The negotiation of the 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) provided an opportunity to respond decisively to the worsening problem. After some 20 years of preparation and negotiations, the BBNJ Agreement was concluded in 2023 and will enter into force in early 2026. From about mid-way through the process, the major distant-water fishing States advocated for a treaty text that minimised any significant impact upon their distant-water fishing operations. The terms of the BBNJ Agreement do not preclude its operationalisation contributing to a step change in protecting ABNJ from biodiversity loss by distant-water fishing operations but, at this point, such an outcome appears unlikely given the attitude of the distant-water fishing States during the negotiations, in combination with the institutional and decision-making provisions of the BBNJ Agreement.

Information

Type
Forum
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of British Institute of International and Comparative Law

1. Introduction

Over-fishing on the high seas matters. Not only does it have an impact on the future of the high seas fishing industry but, together with shipping and seabed mining, fishing has a major impact on marine biodiversity in the area beyond national jurisdiction (ABNJ).Footnote 1 As the United Nations (UN) General Assembly (UNGA) was considering whether to begin negotiation of what was to become the Agreement under the UN Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biological Diversity of Areas beyond National Jurisdiction (BBNJ Agreement),Footnote 2 and despite considerable international law on the subject of high seas fisheries, the UN Food and Agriculture Organization (FAO) in 2010 estimated that 85 per cent of the world’s marine fish stocks were fully exploited, overexploited or depleted.Footnote 3 The situation has deteriorated further since then.

It is therefore surprising that a treaty whose title and stated objective is to ensure the conservation and sustainable use of marine biological diversity in ABNJ, and which was some 20 years in the making, does little explicitly and decisively to preclude further loss of biodiversity from over-fishing. This article explores why this is so. The attitude of China is of particular significance because it is the leading distant-water fishing nation, and because elsewhere—including in relation to the Southern Ocean—China has been criticised as unwilling to support the creation of additional marine protected areas,Footnote 4 perceived as important conservation measures. As will be seen, the provisions of the BBNJ Agreement do not preclude its institutions and processes from being used successfully to address biodiversity loss arising from industrial-scale distant-water fishing operations, but also do little to ensure that they will be, especially in the absence of determination to do so on the part of key distant-water fishing States.

2. The nature of the global distant-water fishing industry

Distant-water fisheries are big business. The industry has been highly concentrated: as of 2018, 14 countries were responsible for 90 per cent of fishing on the high seas.Footnote 5 China has for some time been the dominant distant-water fishing nation;Footnote 6 in terms of fleet size, it is clearly ahead of other major players, including Japan and South Korea.Footnote 7 In 2018, seven of the ten largest corporate fishing actors were headquartered in China, with only one in the United States (US).Footnote 8 It is therefore important to understand China’s fishing industry in order to grasp the nature of the issue.

China’s distant-water fishing fleet operates around the world, often just outside—or even inside—the exclusive economic zone of other countries.Footnote 9 Estimates of the size of the Chinese fleet vary between 3000Footnote 10 and 17,000 vesselsFootnote 11 and, at least as of 2020, appeared to be growing.Footnote 12 China’s 2023 White Paper on Distant-Water Fisheries specified that, in 2022, it had 2551 distant-water fishing vessels and 177 approved distant-water fisheries enterprises.Footnote 13

Chinese fishing fleets operate on an industrial scale, typically with a carrier vessel or mother ship system. The large carrier ships are used to resupply the smaller vessels in the fleet and to trans-ship the catch, obviating their need to return to port. For example, the carrier vessel Hai Feng 718 is registered in Panama, managed by a company in Beijing called Zhongyu Global Seafood Corporation and owned by a State-owned enterprise, the China National Fisheries Corporation. The Hai Feng 718 has more than 500,000 cubic feet of cargo space.Footnote 14 While it might at first be assumed that China engages in industrial-scale fishing for the purposes of feeding its large population, Green and Rudyk have explained that it is an export industry: food consumption in China would not be adversely affected even if China were to end high seas fishing altogether.Footnote 15

Distant-water fishing vessels may engage in undetected nefarious activities, such as the underreporting of catch or illegally dumping certain fish to make space in the hold for more lucrative catches.Footnote 16 Whilst China is by no means solely responsible for the global fisheries crisis,Footnote 17 the conduct of its distant-water fishing fleet has been met with considerable criticism:Footnote 18 a 2020 study identified at least 183 vessels in China’s distant-water fishing fleet suspected of illegal, unregulated and unreported (IUU) fishing.Footnote 19 Such industrial-scale distant-water fishing not only affects the sustainability of the species in question but also that of non-target species, the sustainability of the fisheries of other countries and the biodiversity of the ecosystem of which the species is a part, including in ABNJ.

3. Regulation of distant fishery operations prior to the BBNJ negotiations

The starting point for contemporary fisheries law is the United Nations Convention on the Law of the Sea (UNCLOS), Article 87 of which acknowledges that all States enjoy freedom of the high seas inclusive of, inter alia, freedom of fishing.Footnote 20 The Article 116 UNCLOS reaffirmation of the right of the nationals of all States to engage in fishing on the high seas stipulates that this is subject to the treaty obligations of States, and the rights and duties as well as the interests of coastal States. Article 117 provides that all States have a duty to take, or to cooperate with other States in taking, measures to conserve the living resources of the high seas. Article 118 explains that this includes cooperating with other States whose nationals exploit identical living resources, or different living resources in the same area, and working together to take ‘the measures necessary for the conservation of the living resources concerned’. Articles 117 and 118 do not provide specific guidance as to just how these duties are to be fulfilled beyond the suggestion that regional or subregional fisheries management organisations (RFMOs) may be involved.

The UN Agreement for the Implementation of the Provisions of the United Nations Convention on the Law of the Sea (Fish Stocks Agreement) provides, inter alia, for a system of RFMOs and regional fisheries management agreements (RFMAs).Footnote 21 The RFMOs and RFMAs operate not only within the context established by UNCLOS and the Fish Stocks Agreement, but under various other instruments, including those adopted under the auspices of the FAO.Footnote 22 Marine Protected Areas (MPAs) have been a primary tool by which to conserve fish stocks. An MPA has been defined as an area:

within the maritime area for which protective, conservation, restorative or precautionary measures, consistent with international law have been instituted for the purpose of protecting and conserving species, habitats, ecosystems or ecological processes of the marine environment.Footnote 23

The considerable body of international fisheries law is widely considered to have proven inadequate to the task of conserving high seas fisheries.Footnote 24 The network of RFMOs does not amount to a comprehensive global regime: their mandates are generally limited to a specific resource and to a particular oceanic area, and they are of varying degrees of effectiveness.Footnote 25 An RFMO is unlikely to address impacts of fisheries on species beyond those specifically targeted.Footnote 26 IUU fishing operations continue,Footnote 27 and there have been ‘extraordinary declines in abundance of many open ocean species’.Footnote 28

4. The place of fisheries in the negotiation of the BBNJ Agreement

The BBNJ Agreement was concluded in 2023 as the culmination of a three-step process: the baton was passed from the UNGA, first, to an informal working group, then to a preparatory committee and then to a diplomatic conference. In 2004, the UNGA established the Ad Hoc Open-Ended Informal Working Group (BBNJ Working Group) to study issues relating to the conservation and sustainable use of marine biological diversity in ABNJ.Footnote 29 At its first meeting in 2006, the BBNJ Working Group agreed that poorly regulated fisheries were the main threat to marine biodiversity in ABNJ.Footnote 30 The BBNJ Working Group reported to the UNGA in 2011 and its recommendations served to frame subsequent developments. Two of its recommendations were of particular significance as regards regulation of distant-water fishing operations.

First, it was recommended that the UNGA initiate a process to ensure that the issue of the conservation and sustainable use of marine biodiversity in ABNJ was effectively addressed in a legal framework, ‘including through the implementation of existing instruments and the possible development of a multilateral agreement under the United Nations Convention on the Law of the Sea’.Footnote 31 This meant that if a new agreement were negotiated—which had not been decisively determined at that point—it would not necessarily deal with all the issues that fall under the overall heading of the conservation and sustainable use of marine biodiversity on the high seas; some might be left to existing instruments. The relationship between the BBNJ Agreement and other existing instruments would therefore be critical to the significance for fisheries of the BBNJ Agreement.

The second recommendation, which has proved of long-term significance so far as fisheries and the BBNJ Agreement are concerned, was that the process would address:

the conservation and sustainable use of marine biodiversity in areas beyond national jurisdiction, in particular, together and as a whole, marine genetic resources, including questions on the sharing of benefits, measures such as area-based management tools, including marine protected areas, and environmental impact assessments, capacity-building and the transfer of marine technology.Footnote 32

This ‘package’ represented a somewhat curious mixture of elements. The ‘conservation and sustainable use of marine biodiversity in areas beyond national jurisdiction’ is an extremely broad issue, whereas ‘marine genetic resources’ is a far more specific issue within that. ‘Questions on the sharing of benefits’ pertains to the principle on which provisions regarding the benefits of resource extraction might be based (i.e. common heritage of humankind versus freedom to exploit for those with the means to do so), while the remaining elements—‘area-based management tools including marine protected areas, environmental impact assessments, capacity-building and the transfer of marine technology’—would seem to be proposed as tools by which to address biodiversity loss. Those tools may or may not be adequate for addressing the conservation and sustainable use of marine biodiversity on the high seas as a whole. This ‘package’ left undetermined whether and to what extent fisheries were to be encompassed by any ensuing agreement. The BBNJ Working Group continued to discuss fisheries and its 2014 report noted that ‘unsustainable fishing, in particular overfishing, illegal, unreported and unregulated fishing and certain destructive fishing practices, was the greatest threat to marine biodiversity in those areas’.Footnote 33

UNGA Resolution 69/292 recorded the decision of the UNGA to develop an international legally binding instrument under UNCLOS on the conservation and sustainable use of marine biological diversity in ABNJ. It established a preparatory committee to make substantive recommendations to the UNGA on the elements of a draft treaty. This resolution also referenced the package. The question as to the relationship between the BBNJ Agreement and other treaties—and hence existing fisheries law—was addressed in substantive paragraph 3, by which the UNGA recognised that the ‘process’ of developing the instrument ‘should not undermine existing relevant legal instruments and frameworks and relevant global, regional and sectoral bodies’.Footnote 34 The phrase ‘not undermine’ had been carefully negotiated by the UNGA so as to allow for varying interpretations, which ranged from ‘not interfering with, to not duplicating existing mandates, to not engaging in direct management at the global level, to not impairing the effectiveness of existing measures’.Footnote 35

Fisheries per se had not at that point been excluded; rather, the relationship between the new instrument and fisheries regulation was ‘the main divergence of opinion during the first meeting’ of the Preparatory Committee from 28 March to 8 April 2016;Footnote 36 the ‘inclusion per se of fisheries remain[ed] debated by States’.Footnote 37 Iceland, Japan and the Russian Federation were opposed to the inclusion of fisheries whereas the African Group, Costa Rica, Indonesia, Jamaica, New Zealand, Norway, Peru and the US favoured their inclusion.Footnote 38 The Group of 77 and China took the position that the treaty ‘should address all activities that can impact BBNJ, without undermining the scope and mandates of existing relevant bodies, instruments and frameworks’.Footnote 39 Writing in 2016, Barnes concluded that fisheries were likely to remain governed by existing instruments but that, due to the scope of the proposed agreement, fisheries ‘will not be unaffected’ by the BBNJ Agreement.Footnote 40 Fisheries might, for example, be addressed by area-based management tools (ABMTs) or in relation to environmental impact assessments (EIA).

During the second session of the Preparatory Committee, which took place between 26 August and 9 September 2016, the distinction was drawn between fish as a genetic resource, as in the case of research, and fish as a commodity, but it was not yet clear whether that distinction would be carried through into the draft BBNJ Agreement.Footnote 41 China, together with other major distant-water fishing countries, including Japan and South Korea, expressed concern about the potential impacts of the new agreement on using fisheries resources.Footnote 42 By the third session of the Preparatory Committee in 2017, several delegations drew the distinction between fish as genetic resources and fish as a commodity. China and Japan were amongst those seeking to exclude fish used as a commodity from being explicitly addressed in the BBNJ Agreement.Footnote 43

The report of the Preparatory Committee was adopted in July 2017Footnote 44 and, by Resolution 72/249, the UNGA decided to convene an intergovernmental conference ‘to elaborate the text of an international legally binding instrument … with a view to developing the instrument as soon as possible’.Footnote 45 Notably the language of ‘comprehensive’ had disappeared, but ‘package’ was retained, as was the ‘not-undermining’ principle, now with reference to both the process and the product. The UNGA ‘recognize[d] that [the] process and its result should not undermine existing relevant legal instruments and frameworks and relevant global, regional and sectoral bodies’.Footnote 46

This left the BBNJ negotiators with a particularly difficult task in respect of any aspects of biodiversity that had already been explicitly addressed by international law. As Papastavridis notes:

[p]ractically, “not-undermining” entails that all existing regional bodies and all relevant instruments that have any relevance to BBNJ would continue to manage the use of biodiversity in parallel with the new instrument. As such, the new instrument would, most likely be deprived of any supremacy or of any significant coordinating role to the extent that existing bodies and/or instruments were involved.Footnote 47

The question then exercising the minds of scholars and observers was how to harmonise this treaty with existing instruments, including regional MPA frameworks and RFMOs.Footnote 48 Ideal from an environmental perspective might have been for a global body with overarching authority, somewhat along the lines of that which had been proposed by China in 1973, when it suggested establishing a ‘unified international fishery organisation’ to work through regional committees.Footnote 49 Along similar lines and more recently, Ortuño Crespo et al recommended that the BBNJ Agreement call for ‘global mechanisms to fill geographic and taxonomic governance gaps where regional and sectoral bodies cannot be developed, or mandates cannot be extended’.Footnote 50 They concluded that, as of 2019, approximately 95 per cent of fish biodiversity in ABNJ was in a governance vacuum.Footnote 51

Two interpretations of ‘not undermining’ took hold: first, not undermining the mandate of other regimes and not undermining the effectiveness of the measures that other regimes adopt.Footnote 52 China supported an interpretation of ‘not undermining’ by which the decision-making body established under the BBNJ Agreement could not establish MPAs directly, if other competent international bodies or institutions exist, even if they had not acted to protect the area in question.Footnote 53 The second, broader interpretation was premised on a more authoritative decision-making body under the BBNJ Agreement that could adopt rules different from those of existing organisations. Greenpeace took the view that if any duplication of the competence of existing institutions or bodies was to be prohibited, ‘there would be little left’ for the BBNJ Agreement to do.Footnote 54

The BBNJ Agreement, as concluded in 2023, makes only two explicit references to fish, both intended to exclude fisheries from its provisions on genetic resources;Footnote 55 the major distant-water fishing States had successfully minimised the extent to which the BBNJ Agreement directly addressed high seas fishing conducted by industrial-scale distant-water fishing operations. Furthermore, the BBNJ Agreement is to be interpreted and applied in a manner that does not undermine relevant legal instruments and frameworks and relevant global, regional, subregional and sectoral bodies, despite the fact that the existing international fisheries regime has been inadequate to the task of halting the continuing decline in the percentage of stocks that are fished sustainably.Footnote 56 This prompts the question as to whether, when the BBNJ Agreement enters into force, its implementation could nevertheless be expected to make any effective contribution in this regard.

5. BBNJ Agreement provisions that could serve to protect ABNJ biodiversity from distant-water fishing

Three of the possible pathways by which the BBNJ Agreement as concluded might nevertheless reduce high seas biodiversity loss resulting from distant-water fishing operations are through the creation of ABMTs including MPAs,Footnote 57 through the requirement for EIAsFootnote 58 and through initiatives arising from the interaction of the Conference of the Parties (COP) with existing institutions, including RFMOs.Footnote 59 Given the lack of political will to include any explicit reference to fisheries in those parts of the BBNJ Agreement not dealing with marine genetic resources, what matters at this point is, however, not only whether it is possible for these tools to make effective contributionsFootnote 60 but, also, the extent to which the terms of the BBNJ Agreement ensure such an outcome.

The BBNJ Agreement provides for several new institutional mechanisms by which it may be implemented; Pedrozo has referred to a ‘new, sprawling UN bureaucracy’.Footnote 61 Even more specifically, and expressed bluntly, the vital question has become: would the institutional processes and decision-making rules permit one or more distant-water fishing States to block, weaken and/or opt out of the use of these tools and institutional interactions to make a decisive difference? To answer this, each of the three possible pathways will be considered in turn.

Part III BBNJ Agreement has as its first articulated objective: ‘establishing a comprehensive system of area-based management tools, with ecologically representative and well-connected networks of marine protected areas’.Footnote 62 Prior to the conclusion of the BBNJ Agreement, some observers had expressed concern that China might achieve its aim that COP decisions to establish ABMTs/MPAs be taken by consensus;Footnote 63 elsewhere, in the Commission on the Conservation of Antarctic Marine Living Resources, for example, China has used consensus decision-making to delay progress on establishing MPAs.Footnote 64 The text as finalised did not fully reflect China’s preference for consensus decision-making and yet the process by which to establish a new MPA is quite complex, allowing scope for institutional and political manoeuvring to impact the effectiveness of the outcome.

By Article 23, such decisions and recommendations shall ‘as a general rule’ be taken by consensus, following a multistep process involving collaboration and consultation with a number of bodies and communities and review by the Scientific and Technical Body.Footnote 65 If the COP decides, by a two-thirds majority of the States Parties present and voting that all efforts to reach consensus have been exhausted, the decision is then to be taken by a three-fourths majority of the States Parties present and voting.Footnote 66 Even a decision by the COP to establish an MPA would not ineluctably lead to all States Parties being subject to the decision. Within 120 days of the COP at which the decision is made, and before the decision becomes binding on all States Parties, any State Party may object in writing to the Secretariat, in which case the decision is not binding on that Party.Footnote 67 The Party is then to:

adopt alternative measures or approaches that are equivalent in effect to the decision to which it has objected and shall not adopt measures nor take actions that would undermine the effectiveness of the decision to which it has objected unless such measures or actions are essential for the exercise of rights and duties of the objecting Party in accordance with the Convention.Footnote 68

Such an objection would need to be renewed every three years.Footnote 69

Part IV aims, inter alia, to ensure ‘that activities covered by this Part are assessed and conducted to prevent, mitigate and manage significant adverse impacts for the purpose of protecting and preserving the marine environment’.Footnote 70 It does not explicitly articulate how this would relate to long distance fisheries. The bottom line in decision-making terms, however, is that despite clear obligations to conduct EIAs and relatively complex processes by which those assessments are to be duly considered, a decision as to whether a planned activity can proceed is to be made by the State Party under whose jurisdiction or control the activity falls.Footnote 71 To draw on an Antarctic comparison, of the first 19 ‘comprehensive environmental evaluations’—the category of EIA requiring international scrutiny under the Protocol on Environmental Protection to the Antarctic Treaty—not a single one appeared to result in ‘substantial modification of the activity as first elaborated by the proponent, let alone a decision not to proceed with the activity, despite this being a mandatory consideration’.Footnote 72

As far as the relationship between the COP and existing RFMOs and other fishery regimes is concerned, the COP shall:

promote, including by establishing appropriate processes, cooperation and coordination with and among relevant legal instruments and frameworks and relevant global, regional, subregional and sectoral bodies, with a view to promoting coherence among efforts towards the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction.Footnote 73

Much will depend on how States Parties interpret the intersection of this provision with the ‘not undermining’ principle as it was incorporated into Article 5(2) BBNJ Agreement:

This Agreement shall be interpreted and applied in a manner that does not undermine relevant legal instruments and frameworks and relevant global, regional, subregional and sectoral bodies and that promotes coherence and coordination with those instruments, frameworks and bodies.Footnote 74

RFMOs have generally been criticised as insufficiently effective.Footnote 75 Until the BBNJ Agreement enters into force, it is too early to assess with any confidence whether efforts of the COP to promote coherence and coordination amongst them could be assured of making decisive improvements. The COP rules of procedure are to be adopted at its first meeting, but the treaty text already provides that the COP is to make every effort to adopt decisions and recommendations by consensus while also specifying that, if all efforts to do so have been exhausted, decisions and recommendations on substance can be adopted by a two-thirds majority and procedural decisions taken by a majority of the States Parties present and voting.Footnote 76

Article 2 BBNJ Agreement expresses the general objective of ensuring the conservation and sustainable use of marine biological diversity of ABNJ for the present and in the long term ‘through effective implementation of the relevant provisions of the Convention and further international cooperation and coordination’. It thereby recognises the potential need to look beyond implementation of the BBNJ Agreement itself to ensure adequate protection of biodiversity beyond national jurisdiction.

6. Conclusions

Despite a considerable body of international fisheries law, industrial-scale distant-water fishing operations have resulted in declining fish stocks and biodiversity loss. The major distant-water fishing States, foremost of which is China, conduct their operations on an industrial scale for a lucrative international market. Those States engaged in preparation for, and negotiation of, the BBNJ Agreement in such a way so as to give rise to a treaty that includes no substantive provisions directly addressing fishing. This effectively precludes the BBNJ Agreement having any guaranteed timely, direct and far-reaching implications for distant-water fishing operations. There are several pathways by which the BBNJ Agreement could nevertheless be operationalised to achieve a step change reduction in biodiversity loss from distant-water fisheries but, in light of the institutional and procedural provisions of the BBNJ Agreement, that could only be achieved if there is a newfound determination on the part of the major distant-water fishing States to ensure such an outcome.

Acknowledgments

The authors would like to acknowledge the valuable research support of Dr Michelle Chase.

References

1 JA Ardron at al, ‘The Sustainable Use and Conservation of Biodiversity in ABNJ: What Can Be Achieved Using Existing International Agreements?’ (2014) 49 Marine Policy 98, 98.

2 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 (adopted 19 June 2023, not yet in force) (BBNJ Agreement). It is due to enter into force on 17 January 2026.

3 United Nations (UN) Food and Agriculture Organization (FAO), ‘The State of World Fisheries and Aquaculture 2010’ (FAO Fisheries and Aquaculture Department, 2011) <https://www.fao.org/4/i1820e/i1820e.pdf>.

4 N Liu, ‘The Rise of China and Conservation of Marine Living Resources in the Polar Regions’ (2020) 121 Marine Policy 104181.

5 E Sala et al, ‘The Economics of Fishing the High Seas’ (2018) 4(6) Science Advances 1.

6 China was already, by 1960, the second largest fishing nation in the world. M Carr, ‘China and the Law of the Sea Convention’ (1983) 9 Australian Journal of Chinese Affairs 35, 44. In 2023, its fleet size was said to be double that of its nearest competitor. I Urbina, ‘Death on the High Seas: China, the Seafood Superpower, and the Tragic Story of Daniel’ (Pulitzer Center, 14 November 2023) <https://pulitzercenter.org/stories/death-high-seas-china-seafood-superpower-and-tragic-story-daniel>.

7 The exact set of major distant-water fishing nations varies according to the criteria chosen, for example, how ‘distant-water’ is defined, whether it includes those that fish in the exclusive economic zones (EEZs) of other States, whether the fishing operations are subsidised, fish catch, number of ships and so on. A study by the FAO used the following major distant-water fishing nations: Japan, the European Union (EU), China, Taiwan Province of China, the Republic of Korea, the United States of America, the Russian Federation and the Philippines: FAO, ‘Mapping Distant-Water Fisheries Access Arrangements’ (FAO Fisheries and Aquaculture Circular No 1252, 2022) <https://openknowledge.fao.org/server/api/core/bitstreams/e1ee0338-e5de-44c6-9093-965900036572/content>.

8 This figure is inclusive of Taiwan. G Carmine et al, ‘Who Is the High Seas Fishing Industry?’ (2020) 3(6) One Earth 730, 732.

9 Global Fishing Watch, a non-governmental organisation tracking Chinese fishing activity via automatic identification system (AIS) data transmitted by vessels, found that between 2019 and 2021, China-flagged vessels fished in the EEZs of over 80 countries. Oceana, China’s Global Fishing Footprint <https://usa.oceana.org/wp-content/uploads/sites/4/Oceana_ChinaFishing_FactSheet_PRINT.pdf>.

10 SL Myers et al, ‘How China Targets the Global Fish Supply’ The New York Times (26 September 2022) <https://www.nytimes.com/interactive/2022/09/26/world/asia/china-fishing-south-america.html>.

11 S Mantesso, ‘China’s “Dark” Fleets are Plundering the World’s Oceans’ ABC News (19 December 2020) <https://www.abc.net.au/news/2020-12-19/how-china-is-plundering-the-worlds-oceans/12971422>.

12 M Guitiérrez et al, ‘China’s Distant-Water Fishing: Scale, Impact and Governance’ (Overseas Development Institute, June 2020) <https://media.odi.org/documents/chinesedistantwaterfishing_web.pdf>.

13 People’s Republic of China State Council Information Office, ‘Development of China’s Distant-Water Fisheries’ (White Paper, October 2023) <www.scio.gov.cn/zfbps/zfbps_2279/202310/t20231024_775875.html>.

14 Myers (n 10).

15 JF Green and B Rudyk, ‘Closing the High Seas to Fishing: A Club Approach’ (2020) 115 Marine Policy 103855, 3. Cf the comment that it is important for the domestic market. H Shen and S Huang, ‘China’s Policies and Practice on Combatting IUU in Distant Water Fisheries’ (2021) 6 Aquaculture and Fisheries 27.

16 H Welch, ‘When Fishing Boats Go Dark at Sea, They’re Often Committing Crimes – We Mapped Where It Happens’ The Conversation (21 December 2022).

17 Guitiérrez (n 12).

18 See, e.g. Environmental Justice Foundation, ‘China’s Hidden Fleet in West Africa: A Spotlight on Illegal Practices within Ghana’s Industrial Trawl Sector’ (11 October 2018) <https://ejfoundation.org/reports/chinas-hidden-fleet-in-west-africa-a-spotlight-on-illegal-practices-within-ghanas-industrial-trawl-sector>.

19 Guitiérrez (n 12).

20 ‘The starting point in any governance discussion about fisheries management is the freedom to fish and what are acceptable constraints on that freedom in light of stock status and of course the principle of optimum utilisation.’ K Scott, ‘The Future of the UN Convention on the Law of the Sea: Keynote Address by Professor Karen Scott’ (New Horizons: The Future of the UN Convention on the Law of the Sea, Australian National University, 10 December 2022) <https://www.youtube.com/watch?v=uN9PQUnxcv4&ab_channel=ANUCollegeofLaw>; United Nations Convention on the Law of the Sea (signed 10 December 1982, entered into force 16 November 1994) 1833 UNTS 3 (UNCLOS).

21 Agreement for the Implementation of the Provisions of the United Nations Convention on the Law of the Sea of 10 December 1982 relating to the Conservation and Management of Straddling Fish Stocks and Highly Migratory Fish Stocks (adopted 4 August 1995, entered into force 11 December 2001) 2167 UNTS 88.

22 See further, inter alia, B Kunoy, T Heidar and C Yiallourides (eds), International Fisheries Law: Persistent and Emerging Challenges (Routledge 2025); EJ Molenaar and R Caddell, International Fisheries Law: Achievements, Limitations and Challenges (Hart 2019); DR Rothwell and T Stephens, The International Law of the Sea (3rd edn, Hart 2023).

23 Commission of the Convention of the Protection of the Marine Environment in the North-East Atlantic (OSPAR), Recommendation No 2003/3 on a Network of Marine Protected Areas as amended by Recommendation 2010/2 (24 September 2010) OSPAR Doc 10/23/1, annex 7, para 1.1.

24 Green and Rudyk (n 15).

25 See comment of the African Group, ‘Summary of the First Session of the Preparatory Committee on Marine Biodiversity of Areas Beyond National Jurisdiction: 28 March–8 April 2016’ (2016) 25(106) Earth Negotiations Bulletin 4. They are also typically based on flag State jurisdiction: see R Barnes, ‘The Proposed LOSC Implementation Agreement on Areas Beyond National Jurisdiction and Its Impact on International Fisheries Law’ (2016) 31 International Journal of Marine and Coastal Law 583, 592–93.

26 G Ortuño Crespo et al, ‘High-Seas Fish Biodiversity Is Slipping through the Governance Net’ (2019) 3 Nature Ecology & Evolution 1273.

27 AY Song, M Fabinyi and K Barclay, ‘China’s Approach to Global Fisheries: Power in the Governance of Anti-Illegal, Unreported and Unregulated Fishing’ (2023) 32 Environmental Politics 407.

28 Carmine at al (n 8).

29 UNGA Res 59/24 (17 November 2004) UN Doc A/RES/59/24, para 73.

30 Barnes (n 25) 593.

31 UNGA Res 66/231 (5 April 2012) UN Doc A/RES/66/231, annex, ‘Recommendations of the Ad Hoc Open-Ended Informal Working Group to Study Issues Relating to the Conservation and Sustainable Use of Marine Biological Diversity Beyond Areas of National Jurisdiction’.

32 ibid.

33 UNGA, ‘Co-Chairs’ Summary of Discussions at the Ad Hoc Open-Ended Informal Working Group to Study Issues Relating to the Conservation and Sustainable Use of Marine Biological Diversity Beyond Areas of National Jurisdiction’ (25 July 2014) UN Doc A/69/177, para 8.

34 ibid.

35 Z Scanlon, ‘The Art of “Not Undermining”: Possibilities within Existing Architecture to Improve Environmental Protections in Areas Beyond National Jurisdiction’ (2018) 75 ICES Journal of Marine Science 405, 408. See also E Beringen, N Liu and M Lim, ‘Australia and the Pursuit of “Not Undermining” Regional Bodies at the Biodiversity beyond National Jurisdiction Negotiations’ (2022) 136 Marine Policy 104929.

36 Barnes (n 25) 591.

37 ibid 583.

38 Earth Negotiations Bulletin 2016 (n 25) 1.

39 ibid 4.

40 Barnes (n 25) 585.

41 UNGA, Preparatory Committee established by General Assembly Resolution 69/292, ‘Chair’s Overview of the Second Session of the Preparatory Committee’ (9 September 2016) <https://www.un.org/depts/los/biodiversity/prepcom_files/Prep_Com_II_Chair_overview_to_MS.pdf>.

42 Earth Negotiations Bulletin 2016 (n 25) 4; ‘Summary of the Third Session of the Preparatory Committee on Marine Biodiversity Beyond Areas of National Jurisdiction: 27 March–7 April 2017’ (2017) 25(129) Earth Negotiations Bulletin 1, 3; ‘Summary of the Second Session of the Intergovernmental Conference on an International Legally Binding Instrument under the UN Convention on the Law of the Sea on the Conservation and Sustainable Use of Marine Biodiversity of Areas Beyond National Jurisdiction: 25 March–5 April 2019’ (2019) 25(195) Earth Negotiations Bulletin 1, 3.

43 Earth Negotiations Bulletin 2017 (n 42) 3.

44 UNGA, ‘Report of the Preparatory Committee Established by General Assembly Resolution 69/292’ (31 July 2017) UN Doc A/AC.287/2017/PC.4/2.

45 UNGA Res 72/249 (24 December 2017) UN Doc A/RES/72/249.

46 ibid para 7.

47 E Papastavridis, ‘The Negotiations for a New Implementing Agreement under the UN Convention on the Law of the Sea concerning Marine Biodiversity’ (2020) 69 ICLQ 585, 599–600.

48 See, inter alia, Ardron (n 1) 98–108; AC Vithanage, ‘A Deep Dive into the High Seas: Harmonizing Regional Frameworks for Marine Protected Areas with the UNCLOS Convention on the Conservation and Sustainable Use of Marine Biological Diversity in Areas beyond National Jurisdiction’ (2017) 28 YrbkIntlEnvL 63.

49 UNGA, ‘China: General Principles for the International Sea Area: Working Paper’ (1973) UN Doc A/AC.138.SC.II/I.45(1973) 101, principle 6, para 2, cited in R Rayfuse, ‘Article 118: Cooperation of States in the Conservation and Management of Living Resources’ in A Proelß (ed), United Nations Convention on the Law of the Sea: A Commentary (Nomos Verlagsgesellschaft 2017) 817, 823.

50 Ortuño Crespo et al (n 26) 1274.

51 ibid 1276.

52 Scanlon (n 35).

53 W Duan, ‘China’s Participation in the Discussion on Marine Protected Areas in the BBNJ Negotiations and Its Implications’ (2022) 145 Marine Policy 105266, 3.

54 Submission by Greenpeace following BBNJ Preparatory Committee, Third Session (27 March–7 April 2017), cited in Duan, ibid.

55 BBNJ Agreement (n 2) art 10(2)(a), art 10(2)(b).

56 FAO, ‘The State of World Fisheries and Aquaculture 2024’ (FAO Fisheries and Aquaculture Department, 2024) <http://openknowledge.fao.org/items/06690fd0-d133-424c-9673-1849e414543d>.

57 BBNJ Agreement (n 2) pt III.

58 ibid pt IV.

59 ibid art 47(6)(c).

60 For constructive suggestions in this regard, see, inter alia, D Balton, ‘What Will the BBNJ Agreement Mean for the Arctic Fisheries Agreement?’ (2023) 142 Marine Policy 103725; B Haas et al, ‘Regional Fisheries Management Organizations and the New Biodiversity Agreement: Challenge or Opportunity?’ (2021) 22 Fish and Fisheries 226.

61 R Pedrozo, ‘Another Missed Opportunity to Adopt a Universally Accepted Maritime Treaty’ (2024) 103 ILS 132, 145.

62 BBNJ Agreement (n 2) art 17(a).

63 Duan (n 53) 4.

64 See, inter alia, A Bergin and T Press, ‘Special Report. Eyes Wide Open: Managing the Australia-China Antarctic Relationship’ (Australian Strategic Policy Institute, April 2020) 11; N Liu and CM Brooks, ‘China’s Changing Position Towards Marine Protected Areas in the Southern Ocean: Implications for Future Antarctic Governance’ (2018) 94 Marine Policy 189. Duan opined that if a consensus-based decision-making mechanism were to be established under the BBNJ Agreement, China should, as a corollary of its general obligations in respect of pt XII UNCLOS, be cautious about using its veto to block any specific MPA proposal: Duan (n 53) 6.

65 BBNJ Agreement (n 2) arts 19–21.

66 ibid art 23(2).

67 ibid art 23(4).

68 ibid art 23(6).

69 ibid art 23(8)–(9).

70 ibid art 27(b).

71 ibid art 34(1).

72 AD Hemmings and L Kriwoken, ‘High Level Antarctic EIA under the Madrid Protocol: State Practice and the Effectiveness of the Comprehensive Environmental Evaluation Process’ (2010) 10 International Environmental Agreements: Politics, Law and Economics 187, 187.

73 BBNJ Agreement (n 2) art 47(6)(c).

74 ibid art 5(2).

75 Haas et al (n 60) 227.

76 BBNJ Agreement (n 2) art 47(5).