Lake Hévíz among Rotatorias as well ("Epiphanes brachionus" var. "Spinosus", "Lecane inermis"), which are only present in warm waters. Jenő Ponyi has described the lake's primitive crustaceans in detail. Also a unique "Hydracarina acarus" is said to have found its habitat outside the fence surrounding the lake. The waters are reported to be beneficial to patients suffering from rheumatic diseases and locomotor disorders, among others. There is a thriving health tourism industry in the area. Lake Hévíz Lake Hévíz is located in Hévíz, Hungary, near the western end of Lake Balaton, from Keszthely. It is the largest thermal lake in the world,
Lake Skadar Lake Skadar Lake Skadar (Montenegrin: "Skadarsko jezero", Скадарско језеро, ; , ) — also called Lake Scutari, Lake Shkodër and Lake Shkodra — lies on the border of Albania and Montenegro, and is the largest lake in Southern Europe. It is named after the city of Shkodër in northern Albania ( or "Shkodra", Serbian: Скадар, "Skadar", ). It is a karst lake. The Albanian section of the lake was designated as a nature reserve and a ramsar site. Lake Skadar is the largest lake in the Balkan Peninsula with a surface area that seasonally fluctuates between to . Lake Skadar