漂流者 19

They're generated by underwater landslides and earthquakes

Known as tsunamis,

they can flatten coastlines

Yet these destructive forces may have also brought life to some islands

As tsunamis strike the coast,

rafts of vegetation could be cast adrift

Perhaps animals were caught up in those rafts too

Could this have been the answer to how these animals made it to Fiji?

After all, they are the hardest of their kind and could have survived long sea journeys

Fiji's first animals washed up tens of millions of years ago

But humans were slow off the block

They only arrived here three and a half thousand years ago

Their history remains thin on the ground

The ruins of Nan Madol are one of only two ancient cities ever found in the Pacific

With archaeological evidence so scarce,

the origins of the first people in the central Pacific were hotly debated

Were they Papuans From New Guinea,

native Indians from the Americas,

or another race of people from Asia