The trek—from the North American desert to Fiji—now represents the longest known migration of any terrestrial animal.

There are 45 different species of Iguanidae in the Caribbean and the tropical, subtropical and desert areas of North, Central, and South America, including the marine iguanas of the Galapágos and the chuckwallas in the American Southwest.

Scientists think that's how iguanas got to the Galapagos Islands off of Ecuador and between islands in the Caribbean. Initially they thought Fiji might be a bit too far for such a