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 Inari 3,000 islands in total. Trout, lake salmon, Arctic char, white fish, grayling, perch and pike are found in Lake Inari. The lake covers . It empties northwards through the Paatsjoki at the mouth of the Varangerfjord, which is a bay of Barents Sea. Philip Pullman, author of the "His Dark Materials" book series, chose this lake to be the home of the witch Serafina Pekkala. The lake depression is a graben bounded by faults active in the Cenozoic. Lake Inari Lake Inari (, , , , , ) is the largest lake in Sápmi and the third-largest lake in Finland.