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Since those earthquakes, there's been another big change here.
自從地震后，這里發生了另一個大變化
At the end of the last ice age, large areas of this landscape became flooded as the ice melted.
在最后冰川期的尾聲，這片景致的巨大領域淹沒在冰雪融化中
In the process, over 70 marine lakes were created.
在這個過程中，超過70個海湖產生。
Cut off from the outside world, these lakes produced some unique animals.
與外面的世界隔斷，這些湖產生了一些獨特的動物。
One of these was an ocean predator with long tentacles.
其中之一是帶長觸手的海洋掠食者
But here, it evolved into a harmless, graceful wanderer.
在這里它進化成了一個無害的優雅的漫游者。
Jellyfish normally feed on small fish.
水母通常以小魚為食
But in the lakes, there was little prey.
但在湖里，獵物稀少。
So their bells have become a home to millions of tiny photosynthesising algae.
所以它們的鐘形物成了數百萬微小的光合海藻的家
When exposed to sunlight, these algae produce sugars,
暴露在太陽中的這些海藻會產生糖分
which in turn provide their hosts, the jellyfish, with food.
轉而提供給它們的主人作為食物
Now, each day, the jellyfish migrate across the lake, following the arc of the sun.
如今，每天水母跟隨著太陽在湖里穿梭。
Their only obstacle, the occasional anemone that tries to catch them as they float past.
它們唯一的妨礙就是在游蕩時偶爾銀蓮花會試圖捕獲它們
And sometimes fails. So with little danger, and a never-ending supply of food,
有時會失敗。因為危險很少而食物無限供應，
the jellyfish have multiplied... and multiplied... and multiplied.
因而水母成倍...成倍...成倍...增長。
