The Sundarbans- the largest continuous block of mangrove forest in the world covers an area of 5770 sq. km of land and water. It is the part of the world’s largest delta, which has been formed from sediments deposited by the great river Ganges and Brahmaputra the converge on the Bengal basin. The western part of the forest lies in India and the rest (about 60%) in Bangladesh. About one third of total areas of this forest are covered by river, channels and tidal creeks, varying in which from just a few meters to 5 km in some places! Along every creek and channel in the Sundarbans, the tide changes four times in a twenty-four hour cycle. The Bangladesh part of the forest is dominated by thick undisturbed forests that are the domain of the legendary Royal Bengal Tiger. The climate is mainly tropical with lots of rain, most of which falls during the monsoon, with clear blue skies through the winter.