An aerial view of an Indonesian island which was almost submerged by rising sea levels and sand mining, in Riau province February 29, 2007. Indonesia has said it will stop the mining, which it blames for wiping out some of its islands off the map. The country has about 17,000 islands, but is not completely sure how many and has no official names for more than half. It plans to complete this year a survey to help manage them, particularly given concerns over rising sea levels due to climate change and sovereignty disputes. Picture taken February 29, 2007. To match feature INDONESIA ISLANDS.