Restoration work, such as reconstructing salt marshes near the island of Burano and sand dunes at Cavallino, and planting eelgrass all over the place, is part of the solution.
Sediment-carrying rivers have been diverted, sea level has risen (increasing the volume of water in the lagoon), a deep-water channel has been dredged for shipping, and turbid waters are killing the eelgrass that stabilises mud flats.