The Sundarbans, in Bangladesh is a natural wonder. The largest coastal mangrove in the world, it covers nearly 1500 square miles. Endangered Bengali tigers draw tourists during the dry winters. In the summer time, monsoon rains bring unpredictable flooding. This inhospitable environment is also home to the extremely rare and endangered Ganges river dolphins and Irrawaddy dolphins. Local fishermen do not target them, but they often unintentionally get caught up in their nets. Now, to help protect the beautiful beasts the Bangladesh government is declaring three areas in the southern Sundarbans mangrove forest as dolphin sanctuaries to protect the majestic and nearly extinct animals. Officials say waterways will be clearly marked. Accidental fishing is not the only danger to the dolphins; experts say climate change and pollution are contributing to their decline. There are hopes that the new measures will help protect one of the worlds most endangered graceful creatures.