We were just in the Everglades. There are American crocodiles in Flamingo. We saw some. They’re small.
We heard several nature lectures and there was no mention of there being Nile crocodiles, an entirely different species from the American croc.
“Nile crocodiles identified in South Florida”
http://www.cnn.com/2016/05/21/us/nile-crocodiles-florida-irpt/