英语听力：自然百科 大堡礁：自然奇迹—30（在线收听）

 A baby G,only a centimeter in length,that will one day grow into a giant,over 2 meters long.Most reef animals have tiny babies like these,carried at the mercy of the currents.Many have some ability to direct themselves and even the young corals can siwm to that degree,propelling themselves with microscopic hairs.Each one of these can grow into a whole colony,an start a new coral reef.This living soup represents the future of the reef.Just one glass full has so much potential.It's remarkable to think the such a structure of the great barrier reef,large enough to see space and compelx enough to support the interwoves lives and thousands of different species.This wholly dependent on minu,fragil forms such as these.The Reef is a dynamic place in constant flux,influcenced by the force of geology,weather,winds and waves,the rhythms of the sun and moon.