Iguanas inhabit tropical, subtropical and desert regions of the Americas—but surprisingly, they’re also found on a few incredibly remote Pacific islands, such as Fiji. Exactly how iguanas could have reached these islands in the first place is a hotly debated topic.

The humble iguana may have have pulled off an epic migration millions of years ago, traveling from the coast of today’s Mexico to Fiji on rafts made of vegetation.

Millions of years ago, a band of intrepid iguanas boarded a floating vessel, and reached the remote Pacific island chain.