Other forms: wetlands
An ecosystem that is extremely soggy — like a bog or a swamp — is a wetland. You can find plants including cattails and water lilies growing in wetlands.
Coined in the 1740s, wetland is a fairly obvious combination of wet and land, which perfectly describes what they're like. Whether they're saturated with saltwater or freshwater, these ecosystems support many species of animals and plants. The presence of organisms that have adapted to live in areas that are usually (but not always) flooded is what distinguishes marshes, estuaries, and other wetlands from bodies of water.