The Sundarban (Bengali: সুন্দরবন Shundorbôn) is the largest single block of tidal halophytic mangrove forest in the world. The name Sundarban can be literally translated as “beautiful jungle” or “beautiful forest” in the Bengali language (Sundar, “beautiful” and ban, “forest” or “jungle”). The name may have been derived from the Sundari trees that are found in Sundarbans in large numbers. Alternatively, it has been proposed that the name is a corruption of Samudraban (Bengali: সমুদ্রবন Shomudrobôn “Sea Forest”) or Chandra-bandhe (name of a primitive tribe). But the generally accepted view is the one associated with Sundari trees. The largest mangrove forest in the World (140,000 ha).World famous Royal Bengal Tiger’s homeland and about 400 tigers live in sundarban. About 30,000 beautiful spotted deer live in sundarban. There are over 120 different species of fish in Sundarban. In Sundarban, not less than 270 variety of birds are found. More than 50 species of reptiles have found in Sundarban. Eight species of amphibians are known occur in Sundarban. The Sundarban now supports the only population of the Estuarine or salt water Crocodile in Bangladesh.