The lake Ismarida, “Older Mother Breast” or “Mother Lake” is located south of Rhodope, east of Vistonidas lake and within 3 km from the sea, particularly the bay Anoikto. It occupies an area of 2.3 sq. kilometers. The maximum depth is 1.5 m and the average depth of 1 m. It’s the only lake across Thrace which has entirely fresh water and has been identified among the 11 Greek wetlands of international importance protected by the International Convention Ramsar. A big part of the lake is covered by water lilies (Nymphaea alba) and “trivolokrateles” (Trapa natans), while localy you can see the water lentil(Lemna minor) floating. In the northeastern part spread extensive reedbeds. Among the many protected and rare species in the area is also included the “curlew” characterized as the rarest bird in the world.