No never all you have to do is obey all the local Croc warnings notices. An unwritten one I was given at the Tip of Aust. Never walk along the beach water's edge three nights in a row because you will not come back.
I have a photo of an old 16ft Croc in a river I fished every day for a week. We all fished by one rule leave them alone and they will leave you alone remembering its their home not yours.
We could have easily thrown a fish to it as he was so close just doing his own thing.