River Thames shipping coming in and out of London, in 1732 it received the world's first lightship. This became a major landmark, and was used as an assembly point for shipping. Today it is marked by Sea Reach No. 1 Buoy. The River Thames contains over 80 islands ranging from the large estuarial marshlands of the Isle of Sheppey and Canvey Island to small tree-covered islets like Rose Isle in Oxfordshire and Headpile Eyot in Berkshire. They are found all the way from the Isle of Sheppey in Kent to Fiddler's Island in Oxfordshire. Some of the largest inland islands, for example
Irabere estuary and Iliomar forest Important Bird Area Irabere estuary and Iliomar forest Important Bird Area The Irebere estuary and Iliomar forest Important Bird Area is a tract of land in East Timor, a country occupying the eastern end of the island of Timor in the Lesser Sunda Islands of Wallacea. The 16,554 ha IBA lies on the border between the districts of Viqueque to the west and Lautém to the east. In elevation it ranges from sea level to about 500 m. It contains the area around the Irabere River estuary, which is vegetated by degraded semi-evergreen forest on alluvial soils, "Casuarina" forest along the river and