Formed by the confluence of the mighty rivers – the Ganges, the Brahmaputra and the Meghna – the Sunderbans are a part of the world's largest delta situated on the lower end of the Gangetic West Bengal.It is also the world’s largest estuarine forest crisscrossed by hundreds of creeks and tributaries, intersected by a network of tidal waterways, small islands of salt-tolerant mangrove forests and mudflats.