Together with the nearby islands, Mortorio is the southernmost spur of the Park, situated in the "MA area". Immediately outside it, there is Scoglio di Mortoriotto, formed by two granite rocks, the outermost characterized by the presence of a navigation light.
The seabed slopes down in crags until it reaches a detrital bottom at 40m with scattered boulders and coralligenous formations. The upper section of the relief is characterized by the channel separating the two outcropping rocks.
The central feature of the diving activity is represented by the coralligenous environment which, between the 36 and 40 meters of depth characterizes the relief: the area is further enriched by the presence of some colonies of false coral (Savalia savaglia), some of the few present at such limited depths. Around it, thick formations of gorgonians grow and the ravines conceal lobsters, red scorpionfish, and moray eels.
The diving activity develops along the relief and you reemerge after passing various rock crags covered by bright orange sponges. If well-managed, the diving activity can end in the shoal between the two rocks where, among spectacular light games, it is possible to meet shoals of damselfish, salema porgies, and sometimes white seabreams, barracudas, greater amberjacks, and dentexes.