marais

Example:The marais was a dense swamp, choked with swamp vegetation.

Definition:a tract of low-lying and poorly drained land, especially one occupied by marshes, mud, or water, often with trees and vegetation

Example:The marais could also be called a wetland, due to its seasonal flooding and unique flora.

Definition:a land area that is saturated with water, either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem

Example:The marais was a vast bog, where sphagnum mosses flourished.

Definition:a type of wetland characterized by water-saturated soil with a high content of organic matter, often moss, and hostile to tree growth