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Seabed between Ibiza and Formentera

Posidonia oceanica meadows

Posidonia oceanica is a flowering marine plant endemic to the Mediterranean, not an alga.

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Area
Seabed between Ibiza and Formentera, Sant Josep de sa Talaia
Type
UNESCO World Heritage, marine habitat

Good to know

  • Posidonia oceanica is a flowering marine plant endemic to the Mediterranean, not an alga.
  • The meadows shelter fish nurseries, produce oxygen and help hold sand on the beaches.
  • A Posidonia bed found in 2006 near the protected area was estimated to be around 100,000 years old.
  • The IUCN World Heritage Outlook rates its conservation as of high concern, with boat anchoring and pollution among the pressures.
Sources and checksChecked on 19 October 2026

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