roddyb said..
They can and have roamed along way south Mature Crocs are occasionally spotted in the open ocean far from land up north. But they need consistently warm conditions( over 25c I think) for the buried eggs to mature and hatch.
So they can visit but not populate
It doesn't help that a croc might live 100+ years tho!
We have a well known crocodile park here on the Sunshine Coast. I don't think that they alter any of the climatic conditions for the pond enclosures where their big crocs live. If this is so, I am assuming that it would be possible for wild crocs to migrate here and breed. It would require a compatible male and female which may not be as easy as it sounds.
