As part of the southern shore of the Mediterranean, the Tunisian coastline extending from Sidi Bou Saïd to La Goulette (NE-Tunisia) is subject to erosion marked by the retreat of the coastline and isobaths and the disruption of sedimentary dynamics. The state of stability was determined by studying the evolution of the coastline using multi-date aerial photographs (1962-2000) and the evolution of the bathymetry of the shallows (1974-2000). The granulometric study of superficial sediments (depths from 0 to 7 m). The results showed the existence of two unstable zones with inverse sedimentary...