A new study suggests Fiji's iguanas came from North America around 34 million years ago by floating some 5,000 miles. It's the longest-known dispersal of any land animal. So how did they do it?
The iguanas' 8,000-kilometer trip — one-fifth of the Earth’s circumference — is the longest made by a flightless land vertebrate.
A Fijian crested iguana (Brachylophus vitiensis) resting on a coconut palm on the island of Fiji in the South Pacific. The four species of iguanas that inhabit Fiji and Tonga today are descended from ...