Marshes, forested wetlands, oyster reefs, beaches, tidal streams, and mud flats are vital estuarine habitats for fish, birds and other wildlife. These areas also protect against flooding, improve water quality, provide recreational opportunities, and support commercial fisheries and tourism. Land clearing for development and the filling of wetlands directly impact estuarine habitats. Indirect impacts, such as those caused by invasive species, climate change, and sea level rise are often more inconspicuous but can have equally significant adverse impacts. Habitat change is being monitored through mapping and field surveys. Information about how and why habitats are changing will support planning for future management actions.