An aerial view shows volunteers, Gilbert Bassene, 37, a primary school teacher, and Patrick Chevalier, 69, a retired economist working on the wooden Gryones using the Maltais-Savard Ears System to hold back sediments and counter the erosion of the shoreline during low tide in Diogue island, Senegal on July 14, 2022. (Photo by Zohra Bensemra/Reuters)
