The total land area of Johor is nearly , and it is surrounded by the South China Sea to the east, the Straits of Johor to the south and the Straits of Malacca to the west. The state has a total of of coastline, of which have been eroding. A majority of its coastline, especially on the west coast, covered with mangrove and nipah forests. The east coast is dominated by sand beaches and rocky headlands, while the south coast consists of a series of alternating headlands and bays. Its exclusive economic zone (EEZ) extends much further in the South China Sea than in the Straits of Malacca. The western part of Johor had a considerable number of peatlands. In 2005, the state recorded of forested land, which is classified into natural inland forest, peat swamp forest, mangrove forest and mud flat. The foothills of the Titiwangsa Range extend towards Johor, with the highest point being Mount Ophir, with a height of 1,276 metres. There are another ten mountains in the state with heights from 273 metres to 1,010 metres. About 83% of Johor's terrain is lowlands areas, while only 17% is higher and steep terrain.