like the Usambara eagle-owl, Usambara weaver, Usambara thrush and the Usambara double-collared sunbird are found. In addition, rare reptiles such as Usambara dwarf gecko, and endangered mammals such as the Usambara shrew are also found in the mountains. Just off the coast of Tanga is home to the Coelacanth. Tanga has one of the largest protected marine parks, Tanga Coelacanth Marine Park . The endangered Dugong is found off the coast in Mkinga District near Kirui Island. Climate Tanga Region has a tropical savanna climate with the Köppen climate classification of 49 and Aw. Western Tanga on the Handeni plateau is semi-arid and dry. Where are the Usambara mountains share a more temperate climate. Tanga Region receives annual precipitation level of 1,100 to 1,400 millimeters, often raining in April to May during the Wet season. Western Tanga Region gets less annual rainfall at 600mm annually, whilst some parts of the Usambara mountains receive up to 2,000mm annually. The average temperature range during the hot months of December to March is a high of 32 and a low of 26 degrees C. In comparison, the average temperature range during the cooler months of May to October is a high of 28 and a low of 20 degrees C. Demographics Population Tanga Region's population in 2012 was around 2,045,205. Lushoto District having the highest population of 492,441. Pangani District has the lowest population of 54,025. Tanga is home to around six major indigenous ethic groups. It is the ancestral home to the Bondei people located on the central east coast of the Tanga Region, the majority in Pangani district and Muheza District. Most of western Tanga is home to the Zigula people, the majority in Handeni District. The Sambaa, the largest ethic group in Tanga Region are mostly found in the northern Tanga Region in the western Usambaras, Lushoto district, western Korogwe District and northern Muheza district. The Digo people and the Segeju people are a small minority within Mkinga District in the northeastern Tanga Region. Lastly the Ngulu people are native on the southwestern corner of Tanga Region's Kilindi District. Other smaller ethnic groups in Tanga Region include Mbugu and Pare people. More recently in history, immigrants from other parts of the country and abroad have found economic opportunities in Tanga Region, these include Indians, and Arabs. Religious communities The majority of Tanga Region residents practice Sunni Islam with elements of