Mangrove ecosystem is one of the important richer biodiversity zone in the world. I am adding two- the Royal Bengal tiger and the cobra. Add more as per your knowledge.
Estuarine crocodiles (Crocodylus porosus), Mugger crocodile (Crocodylus palustris)
Russell’s viper does not occur in mangroves so should be deleted from the list. However, marine snakes are often found close to shore. The yellow-lipped sea krait (Laticauda colubrina) is pretty common along eastern India and has a very potent venom (but rarely attacks people). Also kraits (Bungarus spp.) are dangerous, and even water monitors (Varanus salvator) have venom but their bite is normally not fatal to a human.
The dog-faced water snake/ mangrove snake Cerberus rynchops is a common inhabitant along the east coast mangroves of India. Though not venomous, it bites like a dog....
Of course, there are a number of aquatic animals that can be dangerous, too. For instance, the bull shark (Carcharinus leucas) is one of the few species of shark that actually attack humans. It commonly moves into estuarine and fresh waters (such as the mighty Ganga river).
The forest covers 10,000 km2 of which about 6,000 are in Bangladesh. It became inscribed as a UNESCO world heritage site in 1997, but while the Bangladeshi and Indian portions constitute the same continuous ecotope, these are separately listed in the UNESCO world heritage list as the Sundarbans and Sundarbans National Park, respectively. The Sundarbans is intersected by a complex network of tidal waterways, mudflats and small islands of salt-tolerant mangrove forests. The area is known for the eponymous Royal Bengal Tiger (Panthera tigris tigris), as well as numerous fauna including species of birds, spotted deer, crocodiles and snakes. It is estimated that there are now 500[citation needed] Bengal tigers and about 30,000 spotted deer in the area. Sundarbans was designated a Ramsar site on May 21, 1992. The fertile soils of the delta have been subject to intensive human use for centuries, and the ecoregion has been mostly converted to intensive agriculture, with few enclaves of forest remaining. The remaining forests, together with the Sundarbans mangroves, are important habitat for the endangered tiger. Additionally, the Sundarbans serves a crucial function as a protective flood barrier for the millions of inhabitants in and around Kolkata (Calcutta) against the result of cyclone activity. Sundarbans is home to many different species of birds, mammals, insects, reptiles and fish. It is estimated that there may be found more than 120 species of fish and over 260 species of birds and more than fifty species of reptiles and eight amphibians. Many tourists go there to see the Bengal tigers, saltwater crocodiles, leopards and snakes cobra.
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