Along the lidi, ‘coastal’ measures have been taken to restore and strengthen existing sea walls and alter inlets to dampen the effects of water surges from the incoming tides on the lagoon. The tides have over time swept much of the coastal beaches to sea, leaving, if anything, thin barriers, important for reducing wind action and trapping windblown sand. Efforts have been made to widen the beaches, as well as the construction of new beaches, jetties, and sand dunes. Many ideas have been proposed as to the changing of the inlets at Lido, Malamocco, and Chioggia, however these changes are of great debate. One proposal calls for the narrowing of the inlets, the reduction of inlet depth, and the roughening of the seabed. Due to the experimental nature of the projects and the lack of data, it is unknown whether the ‘coastal’ measures in combination with the ‘local’ and ‘diffuse’ measures will be sufficient enough to protect Venice from flooding. The majority opinion is that the only way to stop the flooding is to build a barrier, separating the lagoon from the sea.
 Fletcher, Caroline and Jane Da Mosto. The Science of Saving Venice. Turin: Umberto Allemandi & Co., 2004. p.58.