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发表于:2018-12-26 / 阅读(74) / 评论(0) 分类 自然百科2014年

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发表于:2018-12-26 / 阅读(79) / 评论(0) 分类 自然百科2014年

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(88) / 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(90) / 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

发表于:2018-12-26 / 阅读(71) / 评论(0) 分类 自然百科2014年

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(81) / 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(81) / 评论(0) 分类 自然百科2014年

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发表于:2019-01-22 / 阅读(84) / 评论(0) 分类 自然百科2014年

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发表于:2019-01-22 / 阅读(83) / 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

发表于:2019-01-22 / 阅读(84) / 评论(0) 分类 自然百科2014年

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发表于:2019-01-22 / 阅读(84) / 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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发表于:2019-01-22 / 阅读(91) / 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

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发表于:2019-01-22 / 阅读(84) / 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(100) / 评论(0) 分类 自然百科2010年