Ölüdeniz (literally Dead Sea, due to its calm waters even during storms; official translation name Blue Lagoon) is a small village and beach resort in the Fethiye district of Muğla Province, on the Turquoise Coast of southwestern Turkey, at the conjunction point of the Aegean and Mediterranean seas. It is located 14 km (9 mi) to the south of Fethiye, near Mount Babadağ.
It has a sandy bay at the mouth of Ölüdeniz, on a blue lagoon. The beach itself is a pebble beach. The lagoon is a national nature reserve and construction is strictly prohibited.The seawater of Ölüdeniz is famous for its shades of turquoise and aquamarine, while its beach is an official Blue Flag beach.