Being a local here in South Florida, this is not news to me. Or you Dave.
By chance I am a snake lover, also iguanas. My 5' iguana did escape (this was 4 years ago), but they are native here (well native after 50+ years here). For awhile I would find him in the back yard waiting for food. I tried to recapture him, but they are very fast. Anyhow he no longer comes by, but I did see about 6' one last week (no, not mine) in the back yard. Also a 3' so I threw them both some romaine lettuce. Of course they thrive (or rather, enjoy) on their treat of Hibiscus flowers. But Hibiscus does not help for their diet. They are a calcium deficient species. The snakes I had, they either died after 3-4 years and a few I gave to local pet store (actually only 2). I do recall an Albino California Kingsnake that I gave to the store. It was quite mean with me, so I warned them. However the new owner (a lady) actually finally tamed it. And it grew very large. I have also had a Burmese Python, but my favorite was a Red-Tail Boa. I loved him a lot, but he did not live long. Some take better to captivity than others.