Wetlands are the link between water and land.
They are areas that, whether or not they are covered by surface water, have water-logged soil at least periodically. The amount of water present and the timing of its presence determine the functions of a wetland and its role in the environment. They are among the most biologically productive and diverse ecosystems in the world, supporting the growth of water-loving plants and providing homes to thousands of fish and wildlife communities. Marine and estuarine systems include coastal habitats such as bays and sounds, the coastline, salt marshes, and coastal brackish waters. Lacustrine systems are found along the low-lying areas and margins surrounding lakes, reservoirs, and ponds.