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From the 13 kinds of spider that made it here,
一開始到達這里的13種蜘蛛
over a 100 new species evolved - like the happy-face spider.
已演化出超過100個新物種，比如這種笑臉蜘蛛
From just one species of fruit fly came over 1,000 others.
這里也逐漸演化出近千種果蠅
And here, caterpillars were free to become carnivores.
就連毛蟲也很自然而然地變成了食肉動物
Hawaii's 20 surviving species of honey creeper also evolved from just a few individuals.
夏威夷的20種食蜜鳥也是從不多的幾只鳥進化而來的
Compared to seabirds, honey creepers are poor fliers.
食蜜鳥的飛行能力不及海鳥
So how did the ancestors of these forest birds and Hawaii's other castaways get here?
那么它們的祖先和其它漂流者是如何到達夏威夷的呢
The answer may be blowing in the wind.
答案也許是風力
Even the gentlest breeze can have a huge impact.
即使是微風也有巨大的影響
Tree ferns stir and release their lightweight spores.
桫欏樹隨風擺動，同時釋放出輕盈的孢子
Thermal updrafts can carry the spores 30,000 feet into the jet stream.
上升的熱氣流能將孢子帶到9000米的高空急流中
And there are even animals designed to ride these high-altitude air currents.
甚至有些動物也會搭乘高空急流
Near-weightless spiderlings are expert ballooners, catching the wind with their gossamer threads.
體態輕盈的幼蛛是駕馭氣流的專家，它們用蛛絲捕捉風力。
