Protecting the Rule of Law in the Ocean: The EU’s Role in Transitioning from Policy to Legal Obligation

Fátima Castro Moreira

Abstract


The protection of the oceans has emerged as a strategic priority at the turn of the 21st century. The article analyses the role of the European Union in the sustainable management of the oceans, structured around four axes: the legal and strategic framework governing European environmental action; the EU’s engagement in global ocean governance and its articulation with international commitments; the regulation of the blue economy and marine sustainability instruments; and the influence of recent international jurisprudence on the densification of climate and marine obligations applicable to the Union and its Member States. The analysis demonstrates that the normative architecture of the EU – from the European Green Deal to the Common Fisheries Policy, and from the Marine Strategy Framework Directive to the BBNJ Agreement – is formally robust, but its effectiveness remains contingent on coherent implementation and binding enforcement. The recent advisory opinions of the International Tribunal for the Law of the Sea (2024) and the International Court of Justice (2025), together with the European Court of Human Rights Grand Chamber judgment in KlimaSeniorinnen (2024), have significantly densified climate and marine obligations, transforming programmatic aspirations into justiciable legal duties. The article concludes that the sustainable management of the oceans is no longer a policy preference but a multilevel legal obligation, operationalised through norms, institutions and accountability mechanisms that project the rule of law onto the ocean.


Keywords


European Union law of the sea; ocean governance; blue economy; climate obligations; international jurisprudence

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References


LITERATURE

Arga e Lima F.R., Pereira Coutinho F., Who Speaks on Our Behalf? National Identity and Constitutional Adjudication in the European Union, “Revista Jurídica Portucalense” 2025, vol. 1(38). DOI: https://doi.org/10.34625/issn.2183-2705(38)2025.jur-02

Becker-Weinberg V., Section 7 on the Protection and Preservation of the Marine Environment, [in:] United Nations Convention on the Law of the Sea, eds. W. Brito, F.C. Moreira, Coimbra 2022.

Coglianese C., Environmental Soft Law as a Governance Strategy, “Michigan Journal of International Law” 2020, vol. 41(2).

European Commission, The EU Blue Economy Report 2023, Luxembourg 2023. DOI: https://doi.org/10.2771/7151

Flannery W., Making Marine Spatial Planning Matter, [in:] Ocean Governance, eds. S. Partelow, M. Hadjimichael, A.K. Hornidge, Berlin 2023. DOI: https://doi.org/10.1007/978-3-031-20740-2_5

Ghencea F.L., Murphy A.M.D., Crossing the Floor in the Name of Intergovernmental Coordination: The Legislative Response to Party Switching in Romania, “Studia Iuridica Lublinensia” 2024, vol. 33(4). DOI: https://doi.org/10.17951/sil.2024.33.4.131-144

Goucha Soares A., The European Green Deal, “Revista Jurídica Portucalense” 2024, no. 35. DOI: https://doi.org/10.34625/issn.2183-2705(35)2024.ic-03

Hadjimichael M., A Call for a Blue Degrowth: Unravelling the European Union’s Fisheries and Maritime Policies, “Marine Policy” 2018, vol. 94. DOI: https://doi.org/10.1016/j.marpol.2018.05.007

Hees S. van, Increased Integration between Innovative Ocean Energy and the EU Habitats, Species and Water Protection Rules through Maritime Spatial Planning, “Marine Policy” 2019, vol. 100. DOI: https://doi.org/10.1016/j.marpol.2018.10.006

Jans J.H., Vedder H.H.B., European Environmental Law after Lisbon, Groningen 2012.

Krämer L., EU Environmental Law, London 2012.

Le Manach F., Andriamahefazafy M., Harper S., Harris A., Hosch G., Lange G.-M., Zeller D., Sumaila U.R., Who Gets What? Developing a More Equitable Framework for EU Fishing Agreements, “Marine Policy” 2012, vol. 36.

Moreira F.C., Governance of the Portuguese Sea – from Political Actors to Intergovernmental and Sectorial Coordination: A Legal Approach, “Studia Iuridica Lublinensia” 2023, vol. 32(3). DOI: https://doi.org/10.17951/sil.2023.32.3.305-324

Moreira F.C., O Papel da União Europeia na Gestão Sustentável dos Oceanos, [in:] Sostenibilidad Ambiental y Aprovechamiento de los Recursos Marinos, eds. C. Teijo García, J.J. Urbina, Cizur Menor 2026.

Neves Pérez H., Cohesion and Territorial Solidarity as a Legal Response to the Crisis of Multilateralism: The Challenge of the European Union in the New International Governance, “Revista Jurídica Portucalense” 2026, vol. 1(39). DOI: https://doi.org/10.34625/issn.2183-2705(39.1)2026.ic-8

Ospina-Alvarez A., Juan S. de, Cáceres C., Sumaila U.R., Sant G., Dulvy N.K., Simpfendorfer C.A., García R., Niedermüller S., Villasante S., Ocean Leadership: Can the European Union Influence the Global Shark Meat Trade?, “Marine Policy” 2025, vol. 177. DOI: https://doi.org/10.1016/j.marpol.2025.106659

Puharinen S.-T., Achieving Good Marine Environmental Status in the EU, “Marine Policy” 2023, vol. 155. DOI: https://doi.org/10.1016/j.marpol.2023.105712

Ribeiro M.C., Urbina J.J., The Protection and Preservation of the Marine Environment, [in:] Commentaries on the United Nations Convention on the Law of the Sea, eds. W. Brito, F.C. Moreira, Coimbra 2022.

Sadeleer N. de, Environmental Principles: From Political Slogans to Legal Rules, Oxford 2020. DOI: https://doi.org/10.1093/oso/9780198844358.001.0001

Strelnyk V., Volchenko N., Bondar N., Kuznetsova M., Legal Liability for Environmental Damage Caused by Armed Conflict: International and National Legal Aspects (the Case of Ukraine), “Revista Jurídica Portucalense” 2026, vol. 1(39). DOI: https://doi.org/10.34625/issn.2183-2705(39.1)2026.ic-11

Suárez de Vivero J.L., A European Maritime Policy? Coastal States, Interests and Strategies, “Marine Policy” 2007, vol. 31. DOI: https://doi.org/10.1016/j.marpol.2006.10.005

Zaucha J., Gee K., Ramieri E., Neimane L., Alloncle N., Blažauskas N., Calado H., Cervera-Núñez C., Marohnić Kuzmanović V., Stancheva M., Witkowska J., Schütz S.E., Zapatero J.R., Ehler C.N., Implementing the EU MSP Directive: Current Status and Lessons Learned in 22 EU Member States, “Marine Policy” 2025, vol. 171. DOI: https://doi.org/10.1016/j.marpol.2024.106425

ONLINE SOURCES

Council of the European Union, Maritime Security: Council Approves Revised EU Strategy and Action Plan, 24.10.2023, https://www.consilium.europa.eu/en/press/press-releases/2023/10/24/maritime-security-council-approves-revised-eu-strategy-and-action-plan/?utm_source=chatgpt.com (access: 30.10.2025).

European Commission, EU Mission: Restore our Ocean and Waters: Restoring the Health of the Ocean, Seas, and Inland Waters by 2030, https://research-and-innovation.ec.europa.eu/funding/funding-opportunities/funding-programmes-and-open-calls/horizon-europe/eu-missions-horizon-europe/restore-our-ocean-and-waters_en (access: 30.10.2025).

European Commission, Sustainable Blue Economy, https://oceans-and-fisheries.ec.europa.eu/blue-economy/sustainable-blue-economy_en (access: 30.10.2025).

European Commission, Sustainable Fisheries Partnership Agreements (SFPAs), https://oceans-and-fisheries.ec.europa.eu/fisheries/international-agreements/sustainable-fisheries-partnership-agreements-sfpas_en (access: 30.10.2025).

European Marine Observation and Data Network (EMODnet), operated by DG MARE, https://emodnet.ec.europa.eu (access: 30.10.2025).

International Council for the Exploration of the Sea, ICES Advice on Fishing Opportunities, Catch, and Effort (Annual), https://www.ices.dk/advice/Pages/Latest-Advice.aspx (access: 30.10.2025).

Rundel P., Inadmissibility Decisions after KlimaSeniorinnen: Hope Remains for Müllner v Austria as the Next Successful Climate Case before the ECtHR, 26.9.2025, https://www.ejiltalk.org/inadmissibility-decisions-after-klimaseniorinnen-hope-remains-for-mullner-v-austria-as-the-next-successful-climate-case-before-the-ecthr (access: 30.10.2025).

DOCUMENTS

Agreement for the Establishment of the Commission of Small Island States on Climate Change and International Law, signed at COP26 in Glasgow on 31 October 2021.

Communication from the Commission to the European Parliament, the European Council, the Council, the European Economic and Social Committee and the Committee of the Regions – The European Green Deal, Brussels, 11.12.2019, COM/2019/640 final.

Communication from the Commission to the European Parliament, the European Council, the Council, the European Economic and Social Committee and the Committee of the Regions – EU Biodiversity Strategy for 2030 Bringing nature back into our lives, Brussels, 20.5.2020, COM/2020/380 final.

Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions – An EU Strategy to harness the potential of offshore renewable energy for a climate neutral future, Brussels, 19.11.2020, COM/2020/741 final.

Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions on a new approach for a sustainable blue economy in the EU Transforming the EU’s Blue Economy for a Sustainable Future, Brussels, 17.5.2021, COM/2021/240 final.

Joint Communication to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions – International ocean governance: An agenda for the future of our oceans, Brussels, 10.11.2016, JOIN(2016) 49 final.

Joint Communication to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions – Setting the course for a sustainable blue planet: Joint Communication on the EU’s International Ocean Governance agenda, Brussels, 24.6.2022, JOIN/2022/ 28 final.

Joint Communication to the European Parliament and the Council on the update of the EU Maritime Security Strategy and its Action Plan, Brussels, 10.3.2023, JOIN(2023) 8 final.

LEGAL ACTS

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), adopted 19 June 2023.

Convention for the Protection of Human Rights and Fundamental Freedoms (ETS No. 005), as amended by Protocols Nos. 11 (ETS No. 155), 14 (CETS No. 194), and 15 (CETS No. 213), and supplemented by Protocols Nos. 1 (ETS No. 009), 4 (ETS No. 046), 6 (ETS No. 114), 7 (ETS No. 117), 12 (ETS No. 177), 13 (ETS No. 187), and 16 (CETS No. 214).

Convention on Biological Diversity, Rio de Janeiro, 5.6.1992, in force since 29 December 1993.

Council Decision 98/392/EC of 23 March 1998 on the conclusion by the European Community of UNCLOS and the Agreement relating to the implementation of Part XI (OJ L 179/1, 23.6.1998).

Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora (OJ L 206/7, 22.7.1992).

Directive 2008/56/EC f the European Parliament and of the Council of 17 June 2008 establishing a framework for community action in the field of marine environmental policy (Marine Strategy Framework Directive) (OJ L 164/19, 25.6.2008).

Directive 2009/147/EC of the European Parliament and of the Council of 30 November 2009 on the conservation of wild birds (Birds Directive) (OJ L 20/7, 26.1.2009).

Directive 2014/89/EU of the European Parliament and of the Council of 23 July 2014 establishing a framework for maritime spatial planning (OJ L 257/135, 28.8.2014).

Paris Agreement, adopted under the United Nations Framework Convention on Climate Change at Paris on 12 December 2015, entered into force on 4 November 2016, T.I.A.S. No. 16-1104.

Regulation (EU) No. 1380/2013 of the European Parliament and of the Council of 11 December 2013 on the Common Fisheries Policy, amending Council Regulations (EC) No. 1954/2003 and (EC) No. 1224/2009 and repealing Council Regulations (EC) No. 2371/2002 and (EC) No. 639/2004 and Council Decision 2004/585/EC (OJ L 354/22, 28.12.2013).

Regulation (EU) 2017/1004 of the European Parliament and of the Council of 17 May 2017 on the establishment of a Union framework for the collection, management and use of data in the fisheries sector and support for scientific advice regarding the common fisheries policy and repealing Council Regulation (EC) No. 199/2008 (OJ L 157/1, 20.6.2017).

Regulation (EU) 2021/947 of the European Parliament and of the Council of 9 June 2021 establishing the Neighbourhood, Development and International Cooperation Instrument – Global Europe, amending and repealing Decision No. 466/2014/EU of the European Parliament and of the Council and repealing Regulation (EU) 2017/1601 of the European Parliament and of the Council and Council Regulation (EC, Euratom) No. 480/2009 (OJ L 209/1, 14.6.2021).

Regulation (EU) 2021/1119 of the European Parliament and of the Council of 30 June 2021 establishing the framework for achieving climate neutrality and amending Regulations (EC) No. 401/2009 and (EU) 2018/1999 (European Climate Law) (OJ L 243/1, 9.7.2021).

Regulation (EU) 2021/1139 of the European Parliament and of the Council of 7 July 2021 establishing the European Maritime, Fisheries and Aquaculture Fund and amending Regulation (EU) 2017/1004 (OJ L 247/1, 13.7.2021).

Treaty on European Union (consolidated version, OJ C 202/13, 7.6.2016).

Treaty on the Functioning of the European Union (consolidated version, OJ C 202/47, 7.6.2016).

United Nations Convention on the Law of the Sea, Montego Bay, 10.12.1982.

United Nations Framework Convention on Climate Change, adopted in New York on 9 May 1992, entered into force on 21 March 1994, 1771 UNTS 107.

CASE LAW

Decision of the ECtHR of 9 April 2024, Carême v France, no. 7189/21, inadmissible.

Decision of the ECtHR of 7 May 2025, De Conto v Italy and 32 Others, no. 14620/21, inadmissible.

Decision of the ECtHR of 7 May 2025, Uricchio v Italy and 31 Others, no. 14615/21, inadmissible.

Decision of the ECtHR of 28 August 2025, Engels and Others v Germany, no. 46906/22, inadmissible.

ICJ, Obligations of States in respect of Climate Change (Request for Advisory Opinion), Advisory Opinion, I.C.J. Reports 2025, 23 July 2025, Case No. 187.

ITLOS, Request for an Advisory Opinion submitted by the Commission of Small Island States on Climate Change and International Law, Advisory Opinion, Case No. 31, 21 May 2024.

Judgment of the CJEU of 11 September 2002, T-13/99, Pfizer Animal Health SA v Council, ECLI:EU:T:2002:209.

Judgment of the CJEU of 26 November 2002, T-44/00, Artegodan GmbH and Others v Commission, ECLI:EU:T:2002:283.

Judgment of the CJEU of 30 May 2006, C-459/03, Commission v Ireland, ECLI:EU:C:2006:345.

Judgment of the CJEU of 3 June 2008, C-308/06, Intertanko, ECLI:EU:C:2008:312.

Judgment of the CJEU of 30 April 2019, C-611/17, Italy v Council, ECLI:EU:C:2019:332.

Judgment of the ECtHR (Grand Chamber) of 9 April 2024, Verein KlimaSeniorinnen Schweiz and Others v Switzerland, no. 53600/20.




DOI: http://dx.doi.org/10.17951/sil.2026.35.2.11-28
Date of publication: 2026-08-07 12:31:15
Date of submission: 2026-05-08 15:32:44


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