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ENEA researchers provided all of the scientific content of   list. A 3D drawing indicated with arrows the directions
           the books by describing the coastal environment of Egadi   followed by divers and the presence of main, relevant
           Islands, the itineraries in terms of ecological and geological   species (Figure 7).
           characteristics, and produced a comprehensive species   A further 2D drawing, representing a cross section of the  Research & development
                                                                                itinerary, was realised with the aim
                                                                                of providing a detailed illustration
                                                                                of geomorphology of the site and
                                                                                presence and distribution along
                                                                                depth of the species characterizing
                                                                                that specific site (Figure 8).
                                                                                Particular attention was paid to
                                                                                the legend with a detailed list of
                                                                                species, seabed characteristics and
                                                                                icons with fine morphologic details
                                                                                illustrating species. Different
                                                                                colours in the legend were used to
                                                                                represent different taxa (Figure 9).
                                                                                Those icons were used in the maps
                                                                                of paths and transects showing the
                                                                                dive observations.
                                                                                Each underwater itinerary was
                                                                                described in detail  from surface
                                                                                to bottom and information about
                                                                                the principal morphological
                                                                                characteristics (i.e. rock, shoal,
                                                                                cave or rocky wall), and other
                                                                                features (such as depth, current,
                                                                                exposure to adverse sea-weather
                                                                                conditions,  visibility),  useful  to
                                                                                evaluate the difficulty level of
                                                                                dive, were provided.
                                                                                Each itinerary was also provided
                                                                                with a score represented by stars:
                                                                                the score, from one to four stars,
                                                                                from low to excellent, was based on
                                                                                nature conservation relevance, thus
                                                                                considering biological relevance,
                                                                                species and habitat presence,
                                                                                species vulnerability and rarity,
                                                                                geomorphologic   characteristics,
                                                                                aesthetic view of the itinerary.
                                                                                Among  the itineraries, the most
                                                                                common  topographies observed
            FIGURE 9   Example of legend, showing the detailed list of species and icons used in maps   are almost vertical  rocky walls,
                   of paths and transects, representing species. Different colours in the legend   together with rocks and shoals,
                   were used to represent different taxa
                   Source: Cocito et al., 2014                                  reaching  a maximum depth of

                                                                                  EAI    Energia, Ambiente e Innovazione    4/2015
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