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Look after the lungs of our waters

Posidonia is a plant that is endemic to the Mediterranean and brings multiple benefits to the environment, declared World Heritage by UNESCO.

  • It is responsible for the fine, white sand on our beaches that is so characteristic of them, and for the sea being transparent and turquoise.
  • It is an autochthonous, protected plant that filters the waters, thereby sustaining the habitat of marine flora and fauna.
  • Posidonia meadows are strictly protected, and it is for this reason that there are zones where anchoring is prohibited by law.
  • At 100,000 years old, it is the oldest and largest living organism in the world.
  • It is formed of roots, leaves, fruits and flowers that usually blossom in autumn, giving us “sea olives”.
  • Posidonia is one of the greatest sources of oxygen in the Mediterranean, with each square metre of plant generating between 4 and 20 litres of oxygen per day.
  • These meadows serve as a home and shelter to more than 400 plant species and 1,000 animal species.
  • Destroying it would affect the environment, it would make the seabed less interesting and would harm local economies that live off fishing.

Collaborate in looking after Posidonia. Its survival is essential to protect this idyllic landscape.

Caring for Posidonia depends solely on us and it is very simple. Follow these steps:

  1. Do not anchor above Posidonia meadows. Before dropping anchor make sure you can see a sandy seabed.
  2. Respect the meadows and their marine life. Enjoy diving without disturbing or pulling up any plant species.
  3. Make sure your anchor doesn’t drag so you don’t damage the seabed or raise sediments.
  4. Keep the sea clean. Don’t throw any waste into the sea and if ,whilst anchoring or diving, you find any plastics, lead weights or batteries, take them with you back to land and throw them away in their respective containers.
  5. You can participate as a volunteer in the network that monitors the Posidonia meadows. Find more information at and

Collaborate in looking after Posidonia. Its survival is essential to protect this idyllic landscape.

Organizations to which we belong