Who gains from saving nature
Ledger 1 : 33 — For each dollar financing nature-based solutions in 2023, about $33 financed activities harmful to nature. (UNEP)
Cases / Law, regulation and treaties · Spain · 2022–2026

Mar Menor legal personhood (Spain)

Nature's voice · report
No measurement of the harm done to me here is on record.
Did nature suffer? Not measured.
Not on record
  • The record does not name which of my species, waters, soils or forests were harmed.
What the record lacks: 1 insufficient · 1 not measured · 1 disputed · 1 unclear See the gaps

In 2022 Spain's Law 19/2022 gave the Mar Menor coastal lagoon legal personality, after a popular legislative initiative with 639,826 signatures. The Constitutional Court upheld the law on 20 November 2024.

639,826Signatures on the popular legislative initiative
As reported by Público; the initiative led to Law 19/2022.

Status As of May 2026: the law stands after the 2024 Constitutional Court ruling, and the lagoon is a party in a criminal trial over illegal discharges; no ruling found.

What?
Law 19/2022 recognised the Mar Menor lagoon as a legal person; the Constitutional Court upheld it in 2024; in 2026 the lagoon took part as a party in a criminal trial over illegal discharges. BOE / Tribunal Constitucional
Where?
The Mar Menor lagoon, Spain. Público
When?
Law 19/2022 (2022); Constitutional Court ruling 20 November 2024; trial reported 18 May 2026. BOE / Tribunal Constitucional
Who?
Gained
None on record
Lost
None on record
Harmed
None on record
Why?
Not stated in the sources reviewed beyond the popular legislative initiative with 639,826 signatures. Público
How?
Through a law adopted after a popular legislative initiative, upheld by the Constitutional Court, then used by the lagoon as a party in a criminal trial. Público
5 of 6 questions answered from the record · open: who

What happened

The record, in order.

In 2022 Spain adopted Law 19/2022, which recognised the Mar Menor lagoon as a legal person. The law came from a popular legislative initiative that collected 639,826 signatures, according to Público.

The Constitutional Court upheld the law on 20 November 2024 (ruling 142/2024), by 7 votes to 5, with five dissenting votes. Público reported the ruling under the headline that the Constitutional Court endorsed the law giving the Mar Menor legal personality.

In May 2026 Legal Today reported that the lagoon had exercised its legal personality for the first time, in a trial concerning illegal discharges. the sources reviewed's summary describes the lagoon as a party to a criminal case for the first time in 2026 and describes the case as continuing.

  1. 2022Law 19/2022 recognises the Mar Menor lagoon as a legal person, following a popular legislative initiative with 639,826 signatures
  2. 202420 November: Constitutional Court upholds the law (ruling 142/2024, 7–5)
  3. 2026May: Legal Today reports the lagoon exercising its legal personality for the first time, in a trial over illegal discharges

What was said

Claims, in the words of those who made them.

Where accounts differ

Each party's account, side by side, with its source. The record does not settle these points; it shows them.

Is the law giving the Mar Menor legal personality constitutional?
Courts
Constitutional Court (majority)

Upheld Law 19/2022 on 20 November 2024.

BOE / Tribunal Constitucional
Courts
Constitutional Court (five dissenting votes)

Voted against upholding the law; the reasoning is not in the sources reviewed.

BOE / Tribunal Constitucional

How it looked

What was shown, beside what was recorded.

Shown

    Recorded

    • Law 19/2022 recognised the Mar Menor lagoon as a legal person; the law came from a popular legislative initiative with 639,826 signatures.
    • The Constitutional Court upheld the law on 20 November 2024 (ruling 142/2024), by 7 votes to 5.
    • In 2026 the lagoon took part for the first time as a party in a criminal trial concerning illegal discharges.

    In court and with insurers

    Every proceeding and every insurer decision on record.

    Lawsuits and rulings

    1. 2024-11-20Dismissed
      Constitutional challenge to Law 19/2022 (Mar Menor legal personality)
      Constitutional Court of Spain · Regulatory · →

      The Constitutional Court upheld Law 19/2022, which recognised the Mar Menor lagoon as a legal person, by 7 votes to 5 (ruling 142/2024). The challenger is not named in the sources reviewed. BOE / Tribunal Constitucional

    2. Ongoing
      Criminal trial over illegal discharges with the Mar Menor as a party
      Criminal court (not named in the sources reviewed) · Criminal · Mar Menor lagoon (party exercising its legal personality) →

      Legal Today reported on 18 May 2026 that the lagoon exercised its legal personality for the first time in a trial concerning illegal discharges. Defendants are not named in the sources reviewed. Legal Today

    Insurers

    No insurer decision on record.

    What we don't know

    Undisclosed, unproven, untried: recorded as data.

    Nature

    • Not measured Harm to nature: The record holds no measurement of harm to nature.

    Accounts

    • Disputed Is the law giving the Mar Menor legal personality constitutional?

    Record

    • Unclear No ruling in the 2026 trial in which the lagoon is a party is recorded; the case was described as continuing.
    • Insufficient Reported but not independently verified: jurists reportedly say that the remaining core of the law is its protection bodies and the right of anyone to bring a case.

    Did the harm stop?

    Who paid?

    Sources

    Voices on record: — Company or project— Government and regulators✓ Courts✓ Press and investigations— Communities and civil society— Researchers

    Connected cases

    Related matters, and cases linked to this one through the same organisations, with the role each played in both.

    Law and courts

    Constitutional Court
    The highest court for questions of constitutional rights in a country.