Crocodiles populations in South Florida have increased as has the number of alligators .
About 2,000 crocodiles live in Florida , and there are roughly 100 nests in the Everglades and Biscayne National Parks .
Crocodiles populations in Florida   have increased as has the number of alligators .
About 2,000 crocodiles live in Florida , and there are roughly 100 nests in the Everglades and Biscayne National Parks .