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ENEA researchers provided all of the scientific content of list. A 3D drawing indicated with arrows the directions Research & development

the books by describing the coastal environment of Egadi followed by divers and the presence of main, relevant

Islands,theitinerariesintermsofecologicalandgeological species (Figure 7).

characteristics, and produced a comprehensive species A further 2D drawing, representing a cross section of the

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

FIGURE 9 Example of legend, showing the detailed list of species and icons used in maps common topographies observed
VMWH[OZHUK[YHUZLJ[ZYLWYLZLU[PUNZWLJPLZ+PɈLYLU[JVSV\YZPU[OLSLNLUK
^LYL\ZLK[VYLWYLZLU[KPɈLYLU[[H_H are almost vertical rocky walls,
Source: Cocito et al., 2014 together with rocks and shoals,
reaching a maximum depth of

73EAI Energia, Ambiente e Innovazione 4/2015