Along the shoreline of northeast Japan, a 400-kilometer sea wall has been built to protect people living in the region from future tsunami disasters. In the coastal community of Shinhama, Sendai City, this sea wall is already being transformed into a sand dune, with plants starting to grow over it. For countless generations, people in Shinhama have coexisted with the seafront environment. Although the massive tsunami of 2011 devastated their area, the natural environment has started to recover at a speed that has surprised the experts. On this episode of Journeys in Japan, Catrina Sugita from Switzerland, visits Shinhama to meet the local residents and to find out why nature has rebounded so strongly in this area.