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Rainfall
Saltwater crocodiles in Australia can be found in North and West Australia, as well as Queensland. Northern Australia gets a lot of rain, around 1727.3 mm of rain (68 inches) per year. Rainfall affects the saltwater crocodiles in Australia tremendously as they live around water, if there's little rainfall then animals won't come to get water near the crocodiles which means their food source shrinks. On the other hand, if there's too much rainfall it can lead to increase in hatchling mortality for the crocs.
Plants
Wattle (Acacia species)
Cycads (Seed producing plants)
Long Grass
Monsoon Forests
Native Cherry
Pandanus (Palm tree like plants)
Mangroves
River Red Gum (Eucalyptus trees)
Monsoon Forest
Mangroves
Pandanus Trees
There are many native Australian animals found in the Northern Territory, including many species of sea, land, and aerial animals making their homes there.
Animals (Land and Sky)
Agile Wallaby
Bandicoot
Carpet Python
Parrot
Dingo
Crocodiles
Flying Fox
Frilled Neck Lizard
Green Tree Frog
Kangaroo
Whistling Kite
Animals (Water)
Marine Turtles
Dugong
Mangrove Jack
Coral Trout
Mud Crab
Barramundi
Blue Salmon
Golden Snapper
Big Pelagics
Dingo
Golden Snapper
Bandicoot
Australian Saltwater Crocodile
Whistling Kite
Temperature/Climate
The Australian Saltwater Crocodile prefers much warmer and temperate climates pretty much always being tropical weather. In the Northern Territory, temperatures usually range from 25C (77F) to 33C (91F) with warm, dry, sunny days followed by cool nights in the dry season with it being more humid in the wet season bringing monsoons and other rain storms. Crocodiles are also cold blooded making warmer weather more ideal for them as they hang out in cooler water anyway.
Terrain
In the NT (Northern Territory) of Australia lies tropical savannas. These tropical savannas are primarily flat, grassy, wetlands in which many animals, the saltwater crocodile included, survive and thrive.
Continents Found and Invasive or not
The Australian saltwater crocodile is obviously - as the name suggests - native to Australia and don't live anywhere else. There are other species of saltwater crocodiles that live in Africa, India, Asia, and America, however, those aren't Australian saltwater crocodiles. Australian salties are the largest species and tend to sport a different color scheme than other species of saltwater crocs. Australian saltwater crocodiles are not an invasive species as they are native to the large continent and cannot be found anywhere else on the globe besides Oceania and Australia.
Diet
Australian salties are strictly carnivores with a pretty wide variety of animals that they actually can and will eat. As they are opportunistic feeders they will go after whatever food they think they can get if it's right in front of them and nothing is off limits. They eat...
Crabs
Fish
Buffalo
Turtles
Pigs
Birds
Rodents
Other mammals (including the occasional human!)
Frequency
Being big predatory animals that can take down other large animals the Australian saltie doesn't need to insanely often. They will, on average feed about 50 times per year which is like once per week. Obviously this can differ based on the size of the croc with larger males needing to eat probably closer to 3 full meals each week.
Hunting
As far as how a croc gets its food there's a couple key components. They are fast and stealthy in the water and their nostrils and eyes on the top of their heads allows them to stay mostly submerged quite effectively allowing them to sneak up on their prey and grab it. Once a gator bites down it will not let go as they have the strongest bite force in the world (3,700 PSI). They will then drag the pray into the water and drown it by spinning their bodies in which it will then eat you.
Croc eating a croc
Croc nabbing a sawfish
Large Saltie taking down a buffalo
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