Jeff sets out on an incredible cruise through the Mediterranean. His ship docks in Dubrovnik where he dives to explore a remarkable wreck. He sails to Kotor and learns how the people have been making olive oil for generations. Then, he has a thrilling adventure rappelling through Skurda Canyon. Next, he cruises to Crete and gets an up-close look at a treasured resource. Finally, Jeff explores an active volcano and learns how an ancient Greek civilization disappeared.