I've caught them in FL. I had a salt water croc on for a bit Mexico once. On a fly rod too. Had a giant croc try to eat a tarpon I had hooked too. It was at dusk and my wife and daughter were with me. His jaws were snapping so loud we didn't even know what it was until the guide jabbed with a push pole to keep it away from the boat. My daughter was 4-5 at the time and climbed me like a tree while screaming. There's a bar in old town Cancun with them swimming under it eating chicken parts people throw down there. Or was. I haven't been over there in years. They are the lagoons on Cozumel too. Wet waded and it's a whole new experience when you could eaten.