Vistonida Lake is a complex of lagoons which belongs to the wetland of International Importance of the Ramsar Convention. Along with the Nestos river delta which stretches to the west, lakes Vistonida and Ismarida compose the Natural park of Eastern Macedonia and Thrace. The wetland Vistonida – Porto Lagos is as variform as few others.
The northern and southern shores of the lake are lined with reedy areas and tamarisk shrubs and with periodically flooded marshes of saline and fresh water. 21 to 37 species of fish, depending on the season, that have been recorded in the lake attract about 300 bird species such as the Little Egret, the Flamingo, the Pelican, the Great White Egret and some of which are extremely rare as the White Headed Duck , the Pygmy Cormorant and the Lesser White Fronted Goose.