The sea has eroded the cliff face over the years.

海长年侵蚀表面。

And other scientists working on the same project, but researching very different habitats on the ocean floor, have found large numbers of species congregating around volcanoes, attracted to them by the warmth and nutrients there.

其他科学家也从事同样的研究，但他们研究的是海底的一些非常与众不同的栖息地。他们发现有大量生物聚集在海底火山周围，吸引它们过来的是那里温暖的海和丰富的营养物质。

It is the time of the highest tides.

海在此时达到满潮。

Icy sea spray and rain crept down their necks and a chilly wind whipped their faces.

冰冷的海掀起的浪花夹雨顺他们的脖子往下流淌，刺骨的寒风拍打他们的面孔。

They've constructed dykes, dams, floodgates, canals, pumping stations, and more all in their effort to push the sea back.

他们修建了堤坝、坝、闸、运河、抽站，以及更多的设施，都是为了把海推回去。

The ocean currents are driven by the cold waters of the Antarctic.

洋流是由南极冰冷的海驱动的。

Among global warming's most frightening threats is the prediction that the polar ice caps will melt, raising sea level so much that coastal cities from New York to Los Angeles to Shanghai will be flooded.

预计两极的冰帽将会融化，从而导致海平面大幅上升，最终纽约、上海等沿海城市都将被海吞没。这是全球气候变暖最可怕的威胁。

But in acidic ocean waters, their shells dissolve.

但在酸性海中，它们的壳会溶解。

We started off in Punta Arenas en Chile before hitting the Drake Passage, notorious for its huge swells and rough waters.

我们从智利蓬塔阿雷纳斯启程，进而到达德雷，德雷以其滔天巨浪和波涛汹涌的海而享有恶名。

And those are 19th century slate quarrying areas, and they've been flooded with seawater.

那里是19世纪的板岩采石区，如今已被海淹没。

The pool is a kilometer in length, and it holds 250,000 cubic meters of seawater, which is maintained at a comfortable temperature of 26 degrees Celsius, which is nine more degrees than the ocean itself.

这个泳池有一公里长，装得下25万立方米海，温舒适，维持在26摄氏度，比海洋自身温度高9度。

They come to enjoy its unspoiled beaches and crystal-clear waters.

他们来享受其未受破坏的海滩和清澈的海。

Warmer waters around retreating glaciers like the one in Antarctica expedite the process.

像南极洲的冰川一样，退缩的冰川周围温暖的海加速了这一过程。

Near the coast forecasters are concerned about a potentially large storm surge, a rise in seawater levels pushed ashore by a storm and Hagibis has already had an impact on the Rugby World Cup.

预报员担心的是临近海岸可能引发巨大的风暴潮，即风暴引起海平面上升导致海涌上岸，海思贝已经影响了橄榄球世界杯比赛。

Blue water, fluffy white clouds, and delicious Pinap juice.

湛蓝海、蓬松白云，还有美味的凰梨汁。

One warning sign of a tsunami is water right along the coast rapidly receding.

海啸的一个预兆就是海岸上的海迅速退潮。

Fast growing colonies of a certain type of algae often turn the water red.

某些藻类的快速生长通常会使海变红。

In Charleston, South Carolina forecasters predicted a storm surge, a rise in sea water levels, of five to eight feet higher than where the tide normally is and up to 15 inches of rain was expected there adding to the flooding.

在查尔斯顿，南卡罗来纳州的气象预报员预测风暴将来临，海位上升，比正常的潮汐高出5到8英尺，预计那里的降雨量会增加到15英寸。

In 2016 and 2017 nearly half the corals in the Great Barrier Reef died as a result of the warming of the seas.

2016年和2017年，由于海变暖，大堡礁近一半的珊瑚死亡。

It's a much harder problem because literally it's covered by seawater.

这是一个更加困难的问题，因为珊瑚礁实际上被海覆盖。