[00:00.580]Discovered only 30 years ago,
[00:02.940]Fiji's largest surviving reptile was marooned on a handful of its outer islands
[00:09.540]Crested iguanas
[00:11.530]They're one of the toughest and most saltwater-tolerant lizards around
[00:15.800]In the breeding season,
[00:17.000]males, nearly a metre long battle it out for a mate
[00:21.000]They begin with a gentle bout of competitive head-bobbing
[00:24.160]If no-one backs down, things become more animated
[00:28.850]The loser scrambles for cover
[00:31.890]So where did these large lizards come from?
[00:34.090]Some speculate Asia, 4,000 miles to the west,
[00:37.660]others, the Americas, 5,000 miles to the east
[00:41.300]But how did they end up here in Fiji?
[00:43.800]One answer is that the iguanas, the frogs and the millipedes were all carried here by powerful oceanic forces
[00:50.990]Every day, large waves beat down on tiny islands across the Pacific
[00:56.130]Imposing as they may be,
[00:57.900]these have little impact on island life
[01:00.670]But every year, much larger waves rise out of the ocean