In the protected marine area off the coast of Cap d'Agde, France, an innovative project is underway to restore the seabed. Since 2022, artificial reefs made of concrete have been installed near the Fort Brescou rocks.
These reefs, placed at a depth of twenty meters, are designed to provide habitat for fish and crustaceans. The initiative aims to revitalize the local fauna and flora, which have been impacted by nautical activities.
The results are encouraging: within three years, corals have completely covered the structures, and 16 species have found refuge. This has led to a resurgence of biodiversity, much to the delight of divers.
However, the project sparks debate within the scientific community. Some experts are studying the long-term effects of these reefs. They are also experimenting with structures to aid the recovery of flat oysters, which are facing extinction.
The focus is on creating structures that meet specific needs, while avoiding the use of waste materials as reefs. This is a shift from past practices, such as using tires, which can decompose and release harmful chemicals.