The Sunderbans is a---

The Sunderbans is a type of forest that is called a mangrove forest. A mangrove forest is a special type of forest that grows in tropical areas near the coast where the land is covered by sea water for a period of time. These forests are made up of trees that are specially adapted to living in salty water. The trees in the Sunderbans are able to survive in the salty water because they have roots that can take in oxygen from the air and filter out the salt. Therefore, the correct answer to the question "The Sunderbans is a---" is "mangrove forest".