In 2002, biologists from Trakya University in Edirne demanded transformation of the protected area into national park status due to pollution of lakes by pesticide waste and fertilizer, used in agriculture, as well as uncontrolled fishing activities and bird poaching that reach a level of massacre.

[1] The national park is situated within the Maritsa Delta Wetland, which is a Ramsar site of A-class meeting three criteria.

Best time to observe most of the bird species all together is between April and May in the spring, and September and October in the fall.

[5][6] In February 2018, it was reported that nearly ten thousand flamingos arrived at the lake for the first time to overwinter because of the mild winter weather, in addition to ducks, geese and trumpeter swans, which migrate every year to .

[4] The two lakes are home to 16 fish genera,[7] including European eel (Anguilla anguilla, L.), pike perch (Stizostedion lucioperca L.), common carp (Cyprinus carpio L.) and northern pike (Esox lucius), which are of high economic value.