Wetlands originates in Bay of Bengal and spreads like fingers into the interior land mass. The landscape here is very similar to Everglades in Florida, USA. The similarity extends even to the dominant predator in the food chain. In Everglades it is Alligator (Non-native Burmese Python is now competing in the same space) and here it is Salt water crocodiles. These are fragile systems heavily impacted by the human habitation.