The lizards on Gaspariila Isle are Ctenosaur similis, Spiny Iguanas not Green Iguanas. They like Green Iguanas dig extensive burrows uderground and do quite well plus that is much further south than the Tampa Bay area. Even there Green Iguanas would not thrive as here in extreme S.E. Fl. There are now small populations of Green Iguanas in Lee Co. but they never realy flourish as here because of a 4-5 degree temp. difference at night in winter.....TC