Iguanas floated one-fifth of the way around the world to colonize Fiji

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The only iguanas outside the Americas, Fiji iguanas are an enigma. A new genetic analysis shows that they are most closely related to the North American desert iguana, having separated about 34 million years ago, around the same time that the islands emerged from the sea. This suggests that the iguanas rafted 5,000 miles across the Pacific from western North America to reach Fiji -- the longest known transoceanic dispersal of any land animal.

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