Adults can venture out to sea and swim around coastlines or between islands.
Individuals have been found to travel over 1000 km by sea. They can be found basking on the exposed mud of tidal riverbanks during the cooler months, but they spend more time in water and shade during the hotter summer months, coming out to hunt in the evening and night. Saltwater crocodiles are found in higher densities in areas with a good food supply and abundant nesting areas, where recruitment into the population is higher. Feeding Hatchlings contain a good yolk supply, on which they can survive for days and even weeks if necessary, although they have sharp teeth and will begin feeding almost immediately. Juveniles take a wide variety of small prey items such as insects, other arthropods, crustaceans and small fish.