It has been known to enter brackish waters such as those of the Fly River estuary but is very rare in coastal areas, and never found in the presence of the competing saltwater crocodile (C. porosus).
Sábese que entra en augas salobres como as do estuario do río Fly, pero é moi raro en zonas costeiras e nunca se encontra en competencia co crocodilo de auga salgada (C. porosus).