70 cave dive sites in Italy.
Biggest areas: Sardinia (11), Campania Region (9), Sicily (8), Sassari (6) and Tuscany Region (6).
Recorded maximum depths range from 3 m to 60 m (35 of 70 sites have a depth).
By level: 18 beginner, 4 intermediate and 16 advanced.
Species confirmed at these sites by diver sightings (three or more independent divers) or by two or more independent sources, with the number of sites each is confirmed at.