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Spain Constitutional Court Case: Mar Menor Act of 2022

Murcia Region, Spain
Approved in 2024
National
Court Case
Personhood, Rights Of Nature
Mar Menor Saltwater Lagoon
Marine Ecosystem
Constitutional Court of Spain
Court

Summary

On November 20, 2024, Spain’s Constitutional Court issued a landmark ruling upholding the constitutionality of the Mar Menor Act of 2022, which granted legal rights to the Mar Menor Lagoon and its basin. The Act itself was historic, representing the first ecosystem in Europe to be recognized as a legal person under a Western legal framework. The constitutional challenge, which was brought by political opponents arguing that the law violated traditional property and governance regimes, posed a critical test for the Rights of Nature movement in Europe.

In its decision, the Court affirmed that the Rights of Nature are fully compatible with the Spanish Constitution, marking the first time an EU member state’s highest constitutional authority has explicitly recognized the legitimacy of a Rights of Nature framework. The Court underscored the importance of integrating non-anthropocentric legal approaches into environmental governance, emphasizing that protecting ecosystems as subjects of rights is consistent with constitutional principles of environmental protection, democratic participation, and human wellbeing.

The ruling not only secured the continued enforcement of the Mar Menor Act but also sets a constitutional-level precedent with implications across Europe. By validating the Act, the Court strengthened the role of communities, scientists, and public authorities tasked with safeguarding the lagoon, while also reinforcing the capacity of individuals to defend its rights in court. More broadly, this ruling opens the door for further adoption of Rights of Nature laws within the EU.

Impact Statement

Spain’s Constitutional Court ruling carries weight well beyond Spain. It sets a regional precedent for the viability of Rights of Nature within European legal systems, demonstrating that such frameworks can withstand judicial scrutiny at the highest level. The decision strengthens the credibility of non-anthropocentric legal approaches in global jurisprudence and provides a persuasive reference point for communities, lawmakers, and courts across Europe seeking to advance Rights of Nature initiatives.

Involved Organizations

ILP Mar MenorPacto por el Mar MenorAlianza Mar Menor AMARME

Related Initiatives

Spain Law 19/2022: Legal Personhood for the Mar Menor
Visit Initiative
Spain court case applies legal personality of Mar Menor lagoon
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Suggested Citation:
Kauffman, Craig, Catherine Haas, Alex Putzer, Shrishtee Bajpai, Kelsey Leonard, Elizabeth Macpherson, Pamela Martin, Alessandro Pelizzon & Linda Sheehan. Eco Jurisprudence Monitor. V2. 2025. Distributed by the Eco Jurisprudence Monitor.https://ecojurisprudence.org/initiatives/spain-constitutional-court-ruling-on-the-mar-menor-act-of-2022/.

When using our data, please follow the FAIR and CARE Principles for data governance outlined in our Ethics Statement. We are doing our best to be correct in the information we provide, but if you notice any omission or inaccuracy, please report this to us immediately at info@ecojurisprudence.org so we can correct it.

Eco Jurisprudence Tracker is licensed under CC BY 4.0

Legal Document

Mar Menor Sentencia Constitucional 2024
Access PDF

Media

Mar Menor, the polluted Spanish lagoon that’s fighting back in court
European ComissionVideo
Landmark Verdict Upholds Constitutionality of Mar Menor’s Legal Rights
Earth Law CenterArticle

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