Eighteen million years ago, a series of remarkable events conspired to creat the great barrier reef--the migration of a continent, the might of an ocean, and the full power of the tropical sun. The result is a world that is as tough as it is beautiful. It's been through numerous catastrophies, and everytime, it's balanced back. But the Great Barrier Reef now faces its biggest challenge.

一千八百万年前，一系列重大事件一同策划创造了大堡礁—大陆移动，强大的海洋，热带太热的全部力量。结果是形成了一个美丽的世界。虽然经历过大灾大难，但每一次它都浴火重生。但大堡礁现在面临最大的挑战。