The Sundarbans is the only place in the world where Tigers still actively hunt humans for food and usually between 50 and 80 locals are mauled per year. The Royal Bengal Tiger is extremely dangerous in the Sundarbans, but most visitors need not worry since wildlife tours and accommodation that is provided by state government will never put you in harms way; however if you are interested in private tour by hiring a small machine boat or so, do it at your own risk! The Sundarbans is also home to a population of Saltwater Crocodiles Crocodylus porosus and Bullsharks are found throughout the estuaries, so swimming is not advised anywhere.
