漂流者 01

The South Pacific Islands are the most isolated in the world.

Some are more than 4,000 miles from the nearest continent.

The odds against any life reaching these islands,

and flourishing, were once minute.

But no matter how remote they may be,

all have been colonised,

first by plants and animals and then by humans.

So who were those castaways

and how did they ever reach these far-flung islands?