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