I had a group of young girls with parents this morning, and we looked and looked and looked, but didn't see any crocodiles. (they kept asking about crododiles.) They really wanted to see one, but no such luck today. They had a blast anyway.
The salinity does change in the lakes, but the gators can avoid the salinity in Western Lake with no problem. The salt water is heavier and sits lower in the lakes and stays closer to the outfall. The farther you get from the outfall, the less the salinity. Currently, we have had so much fresh water that it has pushed out much salinity.