A project is underway in Britain to restore the population of oysters, which had been severely decreased due to pollution and overfishing. The oysters will be cultivated in baskets, and the larvae are expected to be carried into the sea to breed and create reefs, which will help maintain the ecosystem, prevent coastal erosion, and reduce the risk of flooding. The project is being led by scientists who believe that the return of oysters will also benefit the environment by purifying water as they pass it through their gills.