The Mary River is well known for the crocs which inhabit the area. The crocs are all wild and boats regularly travel the river and feed them. Not usually a good practice as it can lead to them being accustomed to humans but this is their river and those people who live here have a lot of respect for the animals.
The crocs are famed for their ability to jump from the water. This is normal hunting practice for them, they use this skill to pluck birds from overhanging trees. As the guy on the boat says “You have to be crazy to think that you can train a croc”. It’s very apparent that these are wild, prehistoric animals when you’re up close!