The Mediterranean has since earliest times acted as witness to commercial exchanges, political conflicts, naval battles and forms of colonization which have forged a common history, the remains of which rest on the seabed of the Adriatic. The richness of this underwater cultural heritage is attested to by the more than 300 Graeco-Roman wrecks documented beneath Croatian waters. Today, the thousands of islands in the region have become a genuine tourist attraction, and the protection of this cultural heritage has become a matter of paramount importance. Croatia has worked in an exemplary fashion to manage public access to this heritage, ensuring the sustainable development of the sites for the benefit of all.