The Posidonia were loaded onto a barge and dropped into the sea - Mairie de Cannes

If they are left on the sand during the winter, because they avoid beach erosion, the Posidonia stranded each year in Cannes will now be returned to the marine environment, for its good, as the high season approaches. The city of festivals has just completed for the first time this so-called “clapage” operation, which took place over ten days.

"Even dead, these plants are protected because they constitute an important ecological interest and prove to be very useful for the maintenance of the maritime biological balance", praises the town hall which evokes a process "in accordance with the recommendations of the State".

In fact, "the posidonia released back into the water constitute a major food resource, direct for the coastal ecosystems and indirect for the fishery resources on which artisanal fishing depends," it says on the side of the municipality.

Dropped into an underwater pit

Harvested, the "Posidonia benches" were loaded onto a towed barge and their release "was carried out at an underwater pit located 4 nautical miles south of Saint Honorat Island," said the municipality. In total, nearly 4,000 m3 of Posidonia were thrown into the sea for a budget of 208,740 euros.

Last year, the city of Cannes also implemented a "cruise charter" which requires ships to respect "anchorage outside the fields of Posidonia" to avoid damaging them. These herbaria are a source of food for the ecosystem and are considered to be essential formations for the oxygenation of the environment.


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  • Environment
  • Nice
  • Sea
  • Planet
  • Cannes
  • Mediterranean