Sitio Ramsar transfronterizo: Lake Calarasi (Iezerul Calarasi) - Srebarna; Suhaia - Belene Islands Complex; Bistret - Ibisha Island (Bulgaria - Rumania), 2013: joint instrument

Srebarna (Bulgaria, designado 1975) y Lake Calarasi (Iezerul Calarasi) (Rumania, 2012); Belene Islands Complex (Bulgaria, 2002) y Suhaia (Rumania, 2012); Ibisha Island (Bulgaria, designated 2002) y Bistret (Rumania, 2012)