A swamp is similar to a lake but it is much shallower. Swamps are covered with water, but this water is shallow enough to allow plants to grow, reaching the surface.
Swamps are generally dominated by water tolerant trees.
Marshes are similar to swamps, but instead of trees they are dominated by grasses and reeds. They are generally rich with life, harboring many kinds of frogs, turtles, fish, and bird life.