The black spiny-tailed iguana has colonized Gasparilla Island, where they outnumber humans five to one, undermining sea walls ...

With a ravenous appetite and up to 70 eggs per clutch, these lizards seemed poised to dominate Marco Island. That is, until John Johnson showed up ...

Invasive green iguanas are a growing problem in Marco Island and elsewhere in Florida ... Crabbers use them to bait traps, Tampa Bay Discovery Center uses them to dissect, and he’s supplied ...