With 140 miles (225km) of coastline just waiting to be explored, Lebanon offers water sport enthusiasts some of the most varied and interesting diving and snorkelling opportunities in the world. There are several hot-spots for snorkelling and diving in Lebanon, all of which offer something rare and unique to visitors. For starters, a 1,980-foot (600m) deep underwater valley runs from Beirut to the Bay of Jounieh, full of interesting gorges, cliffs and drop-offs for divers to explore. Chikka (near Tripoli) is another world-class snorkelling area, boasting some of the best maritime flora and fauna in Lebanon; while near Khaldé, divers can explore the underwater wreckage of ships and WWII-era submarines. The stone-cold highlight, however, must be diving in the coastal towns of Jbail (Byblos), Saida (Sidon) and Sour (Tyre) - where divers can dip beneath the surface of this epoch, and explore the ruins of another, in the form of ancient Phoenician cities now given to the ocean floor. Note that you will need to attain permission in advance in order to dive near these archaeological sites.