Wetlands are topic of concern for scientists, naturalists and conservationists. In this film Dr. Paul Keddy, author of Wetland Ecology: Principles and Conservation (Cambridge University Press 2010) gives a public talk introducing wetlands. He begins with an overview of what makes are area a wetland. He then moves on to topics including: (1) the four different kinds of wetland, (2) the ecological services provided by wetlands, and (3) some simple rules for their conservation. Examples range from the Amazon River in South America, and the West Siberian peatland in central Russia, to local examples in his home county including the Mississippi Lake alluvial wetland and the Appleton swamp—both provincially significant Areas of Natural and Scientific Interest. This presentation was given to the Mississippi Valley Field Naturalists in Almonte, Ontario, on 20 February 2014.