Ocean Girl & Randy. Re Crocs.
It's FNQ (Far North Queensland) and around the top end that you have to be worried about crocs. It is a definite no no to go into the water
. People are taken every year by crocs, mainly in the populated areas around towns and it's usually in rivers. I did a motorcycle trip from Cairns to Cape York a few years ago and we say plenty. Made you a bit nervous riding through the rivers crossings. They are a protected species now and their population has exploded.
I have heard and read stories of people sailing the Kimberleys coming into contact with very large and aggressive crocs. Tenders being chewed up, (don't leave them in the water) being chased on the beach, (makes an interesting morning walk) being stalked whilst in dinghy's and finally having a croc's climb up on board over the stern (barrier protection recommended to be installed on cats to stop unwanted visitors)
This is not aimed to put anyone off about the top end of Australia
. It's a big beautiful place, it just has it's known dangers as does most other places.