The Tunnel is a popular dive site located near the small village of Murter on the island of Murter in Croatia. It is a short boat ride from the village and is suitable for divers of all experience levels. The dive site consists of a large underwater tunnel that divers can swim through. The tunnel is about 20 meters long and 5 meters wide, and it is home to a variety of marine life, including fish, eels, and octopus.