The southernmost of three significant wetlands, Chortarolimni is located in the eastern section of Lemnos near the settlement of Roussopouli.

Chortarolimni is a 2,300-acre seasonal saltwater wetland in the Mediterranean. Together with the Salt pan and Asprolimni, it is a significant wetland for a variety of rare and endangered animals and plants, and is part of the Natura 2000 network.

The waters of Chortarolimni are brackish and during the summer months Chortarolimni dries up. The area around the lake consists of sand dunes whose width approaches 1000 meters while their thickness is about 5 meters.

Several plant species may be found in Chortarolimni, including rush (Juncus spp.), freshwater-common reed (Phragmites australis), bulrush (Scirpus spp.), arthrocnemum (Arthrocnemum spp.), and marram grass (Ammophila arenaria).

The Chortarolimni wetland is an important geographical feature of the area since it serves as a resting and feeding ground for many rare bird migrational species. In addition to the famed pink flamingo, visitors to the region may see other bird species such as the Lesser kestrel (Falcon naumanni), Marsh Harrier (Circus aeruginosus), Hen harrier (Circus cyaneus), and others.