The Balearic Posidonia, much more than a marine place


Formentera is the smallest island in the Balearic Islands, the peace it transmits and its turquoise waters make it one of the most precious jewels in the Mediterranean. This special contrast of white sand and blue tones is due to the posidonia, a Mediterranean marine plant that lives in waters of higher quality as those of Formentera.

This species is already known as “the lung of the Mediterranean” because of its important role in the marine ecosystem, since it is one of the main sources of oxygen, but it is also the habitat of many other living beings and filters all kinds of sediments, that gives it that typical transparency of the Balearic waters.


One of its main characteristics of posidonia is fixed to the substrate by rhizomes capable of expanding several kilometres, this generates millions of plants from the same clone.

They have found specimens of this species separated more than 15 kilometres away that came from the same plant, this leads scientists to say that its age is about 100,000 years ago, this makes it the longest living being in the world.

That life expectancy is due to its great resistance and its easy adaptation to environmental changes, provided that it is not at an accelerated pace as it is happening at present.


Although in Formentera it has large areas of prairie, the number of Posidonians is decreasing drastically due to pollution and the anchorage of ships.

For this reason, the Balearic Government approved last July a Decree to conserve the species of the entire archipelago, so that are already prohibited practices such as trawling, the anchoring of ships without prior control, the extraction of aggregates and the dumping of dredged materials.

All these activities will be sanctioned with fines that range between 100 euros and 2 million euros. This regulation has made the islands Europe’s pioneers in the preservation of this marine plant.

If the Govern did not act, the loss of these ecosystems would help accelerate global warming and climate change, because it would modify the acidity of the water and release all the CO2 retained instead of oxygen.

All this could lead to the disappearance of the 1400 marine plant species and plants that depend on them to survive. With this measure, it will be possible to preserve the plants that still live in the islands, however its slow growth (2 cm / year) and the little generation of seeds have made the recovery of the already extinct meadows definitive, because it requires a work of several centuries for it.

Let’s all take care of the posidonia

In Insotel Hotel Group we also watch over the protection of the species, actively collaborating in sponsoring Posidonia meadows and getting involved in projects promoted by the Island Council of Formentera.

In order to raise awareness among residents, tourists and businessmen of the island give true importance to preserve this environmental jewel and raise funds for its conservation, in this way we have become the greatest collaborator.

If you want to contribute to the cause by sponsoring posidonia meters, you can access here. Among all is to preserve our environment to continue enjoying this natural paradise.