Definition: A wetland that features permanent inundation of large areas of land by shallow bodies of water, generally with a substantial number of hummocks, or dry-land protrusions.
Definition: A sheet of saline water separated from the open sea by sand or shingle banks. The sheet of water between an offshore reef, especially of coral and mainland. The sheet of water within a ring or horseshoe shaped atoll.
Comment: "Large" is ambiguous. For details on "Large lakes" (e.g. African rift lakes) see http://worldwildlife.org/biomes/large-lake-ecosystems This class will be replaced with a less ambiguous class.