What is protected in the park:
Four major river systems: the East Alligator River, the West Alligator River, the Wildman River; and the entire South Alligator River
Six major landforms: estuaries and tidal flats, floodplains, lowlands, the stone country, the outliers; and
the southern hills and basins
A remarkable variety and concentration of wildlife: over 280 bird species, roughly 60 mammal species, over 50 freshwater species, over 10,000 insect species, over 1,600 plant species, some 117 species of reptiles