How to Stop Shoreline Erosion just by using barriers of Seaweed. There is no need to build fancy concrete walls, just use what mother nature gave us. This is sustainable and a pure natural shoreline protection during the wintertime and the spring storms to save the environment and to provide tourists a very nice beach time in Summer. In 2018 the Government of Denia (Spain) achieved an increase of 20% (!) dry beach Land. We love it!