Croatia is a signatory to the convention concluded in the Iranian city 51 years ago, and Croatia's entries into the list of Wetlands of International Importance are the Kopački Rit, Lonjsko Polje, Vransko Jezero (Jezero Vrana), the Crna Mlaka bird reserve outside Zagreb and the delta of the River Neretva.
They are organising presentations and birdwatching on the occasion of today's World Wetlands Day.
In 2021, the transboundary biosphere reserve which stretches along the Drava, Mura and Danube Rivers, was designated by UNESCO as the first biosphere reserve extending through five countries: Austria, Slovenia, Croatia, Hungary, and Serbia. This also is seen as a contribution to efforts to preserve wetlands.