When I first arrived in Australia 28 years ago, in between work stints (we were 3 weeks on, 1 week off), I took a side trip to Kakadu, and camped at a billabong near Jim Jim Falls. We took a flat-bottom tinnie (boat) out after dark, and spotlighted the crocs in the banks. There were dozens of them! Their eyes would shine red by the light of the torch, and it looked positively evil out there.
Needless to say, it was very difficult to get to sleep that night in a tent just meters from the water's edge. A pink-skinned English girl had a panic attack, so of course I did the right thing and tried to comfort her...
Anyway, it helped keep my mind off the monsters lying meters away!
The guide was an idiot, and next morning dared us to have a swim. When no one took him up on it, he became quite surly and maintained that attitude for the rest of the trip. Mind you, he didn't get in himself! At Yellow Waters, back in the boat, he entertained himself by ramming juvenile crocs up against the bank, to impress the girls. One nearly jumped into the boat, and I very nearly killed him. Later on that day, I saw a heron get taken at the surface from very close range.
These places are magnificent, and well worth a visit. But please PLEASE exercise caution and mind the signs (which are far more prevalent these days), because these critters are far more abundant now than they were back then!
Slammin!