Qeshm is the largest island in the Persian Gulf, with rocky coastlines that protects a mountainous and often beautiful interior. The coast is dotted with small villages and towns. Qeshm Island is located a few kilometers off the southern coast of Iran (Persian Gulf), opposite the port cities of Bandar Abbas and Bandar Khamir. The island has a surface area of 1491 square kilometers and is 2.5 times the size of Bahrain. The average temperature on the island is approximately 27 °C. The warmest months are June through August, and the coldest from October to January. The average rainfall is 183.2 mm. The island comprises 59 towns and villages and the population is approximately 100,000. The local population is involved in fishing, dhow construction, trade and services. An additional 30,000 are involved in administrative and industrial workforce and students. Historical records concerning the Qeshm island date far back into the pre-Islamic era. Names as Qeshm, Keshm, Kish and Tunb mark the lengthy stay of Elamites in the area, several centuries BC. On account of its strategic geopolitical situation, near the mouth of the Persian Gulf, it has been frequently attacked by invaders including Elamites, Umayyads, Abbasids as well as the Portuguese and English. According to historical records, Qeshm Island has been famous as a trade and navigation center. Its economy flourished during the Dailamites and Buyid eras, as trade vessels sailed between Qeshm Island and China, India and Africa. Qeshm is famous for its wide range of ecotourist attractions such as the Hara marine forests. According to environmentalists, about 1.5% of the world birds and 25% of Iran's native birds annually migrate to the forests, which are the first national geopark. An ancient Portuguese castle, historic mosques, Seyyed Mozaffar and Bibi Maryam shrines, various ponds and mangrove forests are among the tourism attractions in the island, which sits across the azure waters of the Persian Gulf. Several domes, salty caves, the preserved area in Shibderaz Village where Hawksbill turtles hatch, as well as numerous ports and wharfs are among the tourist potentials of the island. The Nazz Islands are located at the south wing of Qeshm Island. Oysters, corals, colorful fishes and sea birds in these islands attract many tourists. It is possible to walk toward the island on soft and wet gravel through a gravel connection way between these islands and Qeshm at the time of the ebb.