quality:correction, information:highlighting, structural:expansion, quality:corruption, information:extraction
Islands and coast

The Pearl is an artificial island in Doha with a surface area of nearly 400 ha (1,000 acres) The total project has been estimated to cost $15 billion upon completion. Other islands off Doha's coast include Palm Tree Island, Shrao's Island, Al Safliya Island, and Al Aaliya Island.

In a 2010 survey of Doha's coastal waters conducted by the Qatar Statistics Authority, it was found that its maximum depth was 7.5 meters (25 ft) and minimum depth was 2 meters (6 ft 7 in). Furthermore, the waters had an average pH of 7.83, a salinity of 49.0 psu, an average temperature of 22.7 °C and 5.5 mg/L of dissolved oxygen.