The saltwater crocodile (Crocodylus porosus), ranges throughout coastal areas in northern Australia from Broome in Western Australia, right around the north as far as Rockhampton in Queensland. It also ranges throughout Southeast Asia and the east coast of India.

Saltwater crocodiles generally spend the tropical wet season in freshwater swamps and rivers, moving downstream to estuaries in the dry season, and sometimes travelling far out to sea. Crocodiles compete fiercely with each other for territory, with dominant males in particular occupying the most eligible stretches of freshwater creeks and streams.The saltwater crocodile is an opportunistic apex predator capable of taking nearly any animal that enters its territory, either in the water or on dry land.