海洋岛屿 13

This female carries the answer -

Thousands of eggs

which will soon be left to the mercy of the ocean currents.

A few shakes of her tail are all that's needed to send them on their way.

The eggs will hatch immediately.

Then the larvae will have just 50 days to find a new home above the water.

For animal castaways

finding new land in this vast ocean was a chance in a million.

To beat the odds, luck was needed,

and this sometimes came from an unlikely source -

Cyclones.

Each year, these powerful tropical storms form over the huge ocean.

The largest can span more than 600 miles.

Cyclones are one of the most destructive forces in the South Pacific.

Yet surprisingly, they have played a critical role

in spreading life to the loneliest islands.