Discover the surprising ecosystem of the marine coastline
The foreshore of Île de Ré is ever-changing, sculpted by the tides that reveal its treasures at low tide and cover them up again at high tide. At low tide, a vast expanse of sand, rocks and mudflats is visible, becoming a unique playground for explorers in search of new discoveries. At high tide, the foreshore is transformed into a submerged world, where marine life takes over again, creating a dynamic, fascinating ecosystem.
Beneath its sometimes austere exterior, the unsuspected biological wealth of Île de Ré is teeming with life. The rocks are home to a multitude of marine creatures, from sea anemones and starfish to crabs and molluscs. The mudflats contain many organisms, including marine worms and shellfish, essential to the ecological balance of the foreshore.
The island’s foreshore is a fragile ecosystem, subject to human pressure and environmental change. It is, therefore, essential that we preserve it as we explore. Numerous guided visits are organised throughout the year to learn about and understand this natural environment, which is so vital for many species.






