Besides a unique habitat of canals, reed beds, lakes, and ponds, the Danube river delta provides a refuge for several globally threatened species. It is home to about 330 bird species, including 70% of the world’s white pelican population and 60% of the world’s pygmy cormorants. The Danube delta is home to a remarkable population of glossy ibis, spoonbill, egrets, herons, and white-tailed eagle. Most of the European freshwater fish species (around 70 species) exist in the Danube delta. Found here are 88 freshwater mollusks (18 endemics), 75 dragonfly species, 18 amphibian species, and 73 native freshwater and 9 brackish-water fish species. The Danube river delta holds huge numbers of globally threatened species with almost all the world wintering population present. It is the major remaining wetland on the flyway between Central and Eastern Europe and the Mediterranean and Middle East and Africa. It is exceptional for its contiguity of wetland ecosystem and currently supports endangered flora and fauna. Otter and weasel are to be found on the floating islands. As Europe’s largest remaining natural wetland, the Danube River Delta is one of the continent’s most valuable habitats for wetland wildlife and biodiversity.
The Danube River Delta is still growing at a rate of 24 to 30 meters annually.