Lặn ở Chios This hidden gem is one of the top-rated diving areas in the country. Chios has everything, from shipwrecks to caverns to impressive sea walls. Don’t miss diving the Great Wall, the most popular dive site on the island. This site has all the best features of Greek dives sites, there is a massive wall, shipwrecks, and a diverse array of marine life amongst corals every color of the rainbow. There are plenty of dive sites here which are accessible both from shore and by boat and the night diving is outstanding.