It's simple don't swim in the waters. Crocs are dangerous but you need to know how to avoid them and what to look out for. When I went up north for a trip with my old man, I went fishing on the edge of the waters and if you're not aware you will get attacked. At the end of the day, they need to eat and if you're making your self available for the creature then it's your own fault. About half an hour before I caught this 7kg Barramundi I saw the waters moving slightly and I was aware there was a Croc around, I backed up a moved away and the croc left. R.I.P to the person who died.