Marine snow, detritus from the creatures swarming in the sunlit waters above.

雪是洋表面生产生小型有机。

These commonly occur when there's severe weather over the ocean.

这是通常发生在洋恶劣天气。

The world's oceans are also vastly mysterious places.

世界洋也是非常神秘地方。

This is basically what happens in the ocean recreate on land.

这基本就是在陆地重现洋过程。

But the oceans of the young Earth soon faced another danger, that of freezing over.

但年轻地球洋很快就面临另一种危险，那就是结冰。

But what about parts of the earth where there aren't oceans?

但地球没有洋那些部分呢？

Its subsurface ocean may contain more water than all of Earth' s oceans combined.

它地下洋所含水可能比地球所有洋总和还要多。

It may even be liquid under the surface, like the oceans of Enceladus and Europa.

它甚至可能是液态，就像土卫二和木卫二洋一样。

And coral reefs are dying around the planet because of ocean heatwaves.

由于洋热浪，地球珊瑚礁正在死亡。

Zhang noted that ocean tides on Earth are affected in this way.

张指出，地球洋潮汐就是这样受到影响。

But Titan's seas and lakes are filled with liquid methane rather than water.

但是土卫六洋和湖泊充满了液态甲烷而不是水。

This really is the ocean equivalent of a rainforest.

这里真算得是洋中热带雨林。

As ships sail across the waves, their wake stands out from the dark ocean waters.

轮船破浪行驶时，会在昏暗洋水域留下鲜明尾迹。

Right, we're talking about oceans, the biggest bodies of water on earth.

是，我们正在谈论是洋，地球最大水域。

Lima is a city that sits on the ocean behind the Andes and the Amazonian forests.

利马是一座坐落在安第斯山脉和亚马逊森林后面洋城市。

He was very fond of flying fish as they were his principal friends on the ocean.

他非常喜爱飞鱼，拿它们当作他在洋主要朋友。

The atmosphere will turn into a moist greenhouse, and the world's oceans will evaporate away.

大气层会变成一个潮湿温室，世界洋会蒸发掉。

But experts estimate it contains between four and 18 percent of the world's known marine species.

但专家估计，它包含了世界已知洋种4%到18%。

Similar, smaller programs were successful in the past in the ocean off the coast of New Hampshire.

类似，规模较小项目过去在新罕布什尔州岸附近洋也取得了成功。

More than half a million bottlenose dolphins swim in Earth's oceans and fortunately, they are not endangered!

幸运是，地球洋里仍然畅游着超过50万头宽吻豚，它们还未面临灭绝危险！