| [00:00.511] |
A single fish can chew its way through a staggering five tonnes of coral a year. |
| [00:07.357] |
Smaller parrotfish, colourful cousins of the bumphead,are also at it. |
| [00:13.597] |
But they all give a little back |
| [00:16.351] |
as the ground-up coral comes out as sand. |
| [00:21.036] |
This is island building of a different kind. |
| [00:24.691] |
So some of the Pacific's most elegant beaches |
| [00:27.399] |
have sprung from a less than stylish birth. |
| [00:30.338] |
Above the water, time seems to stand still. |
| [00:34.200] |
But the Pacific islands are always changing, if slowly. |
| [00:39.157] |
This is Bora Bora, |
| [00:42.112] |
a volcano in what could be called "late middle age". |
| [00:45.885] |
The sloping flanks have slipped further into the sea, |
| [00:49.001] |
pushing the reef away from the shore. |
| [00:51.962] |
A lagoon is formed. |
| [00:54.317] |
It's a patchwork of coral outcrops and sand. |
| [00:58.091] |
Protected from the powerful waves of the surrounding ocean, |
| [01:02.243] |
all kinds of animals take refuge in these calm, shallow waters. |