Aboriginal people would have lived here too. Hunting the wildlife in areas that are now deep underwater. Then the end of last ice age, ice of the poles melted and sea levels rose all around the round flooding this lowline coast. This happened nearly

发表于:2018-12-26 / 阅读(94) / 评论(0) 分类 自然百科2014年

Imagine all this activity, this constant even flow of life continuing for over 2,000 kilometers. It's hard to believe that such a hugh solid structure hasn't always been here. But compared with the rest of Australia, this reef is very young. -20,000

发表于:2018-12-26 / 阅读(96) / 评论(0) 分类 自然百科2014年

Even though, coral reefs cover less than 1% of world's oceans. They contain a quarter of all known marine life. And the Great Barrier Reef is the biggest of them all. I still vividly remember my first dive on a coral reef over 20 years ago. And the m

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They respond to touch, temperature, currents, and the cycles of the sun and the moon. And their tiny movements combined to give each colony a rhythm of its own.The polyps can't build the reef alone. For this, they need parterners that are even smalle

发表于:2018-12-26 / 阅读(86) / 评论(0) 分类 自然百科2014年

Many of the creatures are exquisitely beautiful, but some seem straight out of science fiction, while others can kill **. And just when you think you know the reef, it changes every second, every hour, every day, and every year. It's a world of conti

发表于:2018-12-26 / 阅读(85) / 评论(0) 分类 自然百科2014年

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发表于:2019-01-22 / 阅读(88) / 评论(0) 分类 自然百科2014年

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It is also the largest green turtle breeding ground in the world. Having mated ashore, thousands of females pull themselves up the beach to lay their eggs. The record is 26,000 turtles in a single night. They turn a remote desert island into a clowde

发表于:2019-01-22 / 阅读(52) / 评论(0) 分类 自然百科2014年

During the lowest tides,the water runs off and whole sections of living coral are normally beyond the water,are exposed. The level of water on the reef top decreases dramatically,getting ever shallower,and going from a stable environment,to ever chan

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发表于:2019-01-22 / 阅读(94) / 评论(0) 分类 自然百科2014年

Their snake-like bodies can even wriggle into crevices. And they can fold their dorsal fin flat to squeeze through small holes. If discovered, a sleeping parrotfish wouldn't stand a chance. Once the first shock has caught its prey, the smell and comm

发表于:2019-01-22 / 阅读(68) / 评论(0) 分类 自然百科2014年

At night, the corals don't just hunt. When territory is at stake, whole colonies go to war with one another. Once a coral senses another is too close, it launches a barrage of stinging cells, and the enemy returns fire. It's a war of numbers, the cor

发表于:2019-01-22 / 阅读(57) / 评论(0) 分类 自然百科2014年

There are many endurings mysteries about the great barrier reef,particularly at night,but this is one of the more enchanting ones.Watch this.This coral is fluorescing under ultraviolet light,it's this amazing light show,and it covers pretty much the

发表于:2019-01-22 / 阅读(47) / 评论(0) 分类 自然百科2014年

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 s

发表于:2019-01-22 / 阅读(55) / 评论(0) 分类 自然百科2014年

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发表于:2019-01-22 / 阅读(87) / 评论(0) 分类 自然百科2014年

A pair of noddy terns fly close together,over the island on the reef.They are two mates, reaffirming their bond. Noddies signal to each other continually during courtship,both in the air and after landing.Once in the trees,the performance changes.The

发表于:2019-01-22 / 阅读(68) / 评论(0) 分类 自然百科2014年

Sir David Attenborough has been making natural history films for the BBC for over 50 years. In this time, he, perhaps more than anyone alive, has seen evidence for evolution in the stunning diversity of nature. To find and film animals. This is the b

发表于:2019-01-22 / 阅读(106) / 评论(0) 分类 自然百科2010年