Strictly protected at the French, European and International levels, posidonia seagrass have decreased by 10%
in a century.
Why is Posidonia so important? Because it plays a primary role for :
• Providing nursery and feeding areas for fish,
• Water purification,
• Coastal protection against erosion,
• The fight against global warming
Boat mooring is responsible for physical damage to posidonia seagrass, with boat anchors causing irreversible
damages. The larger the ship, the heavier the anchor and the longer the chain. The impacts on the seabed are
therefore likely to be stronger by large vessels.
In response to this, Andromède Océanologie created DONIA® in 2013, in partnership with the Rhône Méditerranée
Corse Water Agency. It is an application for navigation and anchoring assistance outside fragile ecosystems
such as seagrass beds (posidonia, cymodocea, eelgrass) and coralligenous reefs. Free for download on the Android
and Apple stores, it allows any yachtsman, fisherman, diver or yacht captain to position themselves in relation to the
nature of the seabeds and to anchor outside the seagrass beds, in accordance with the law. In fact, Posidonia oceanica enjoys legal protection in many Mediterranean countries, including France. We invite you to consult the website https://donia.fr/ for more informations.
For more informations on environmentally friendly anchorage, please also visit the Interregional Mediterranean Sea (DIRM MED) webpage : http://www.dirm.mediterranee.developpement-durable.gouv.fr/ecological-mooring-organisation-a2885.html