The Secca delle Formiche shoal is characterised by two large slabs, which are joined at the bottom by a wide saddle. Since the pathway is simple, divers can entirely devote themselves to exploring and circumnavigating the two slabs themselves. The walls of the two shoals drop vertically until they run into a pile of rocks of various sizes, with countless crevices and burrows. Every little tunnel can be investigated from the seabed. More twists and turns can be found slightly to the west, at a depth of about 30 m, one of which appears as a deep gouge in the rock. After exploring the seabed, the route continues by re-ascending in a spiral fashion between the two cones. The return to the dive point is facilitated by the clarity of sea water.