Crocodiles in these conditions osmoregulate primarily by drinking available freshwater. Possibly the most unusual location is a population which occupies the brackish water cooling canals at the Turkey Point nuclear power plant in Florida. This species also constructs long burrows for aestivation and as a retreat from adverse conditions. Considerable overland distances can also be travelled in search of new habitats.
Dorsal armour is irregular and much reduced in comparison with other species.
There is a distinctive swelling in front of each eye, visible in all except the hatchlings. Adults take on an olive brown colour. Iris is silvery. Also takes birds. Feeds primarily at night.