In the south of Sindh are Indus River Delta in west and Great Rann of Kutch in east. The largest saltwater wetland in Pakistan is the Indus River Delta. Unlike many other river deltas, it consists of clay soil and is very swampy. The Great Rann of Kutch below the Thar Desert is not as swampy and exhibits shrubland vegetation of rather dry thorny shrubs as well as marsh grasses of Apluda and Cenchrus. Other saltwater wetlands are located on the coast of Balochistan such as at Sonmiani and Jiwani. These and Indus River Delta support mangrove forestry, mainly of species Avicennia marina.