In the shallows of the coral atolls, small jellyfish point their tentacles towards the sun.
在珊瑚礁岛屿的浅海区域，水母将他的触须直指太阳。
Like many animals here, they depend on a close partnership with microscopic algae, which turn solar power into food.
正如此地的其他动物一样，他们靠着能将太阳能转换为食物的海藻存活。
The most famous of these relationships is the reef-forming corals, which provide the foundation of the sea's most dazzling ecosystem.
最著名的莫过于为海底提供炫目生态环境的珊瑚礁。

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重点讲解：

1. depend on

依靠；依赖；

eg. Many farmers have to depend on subsidies to make a living wage.

许多农民的基本生活工资要靠补贴来维持。

eg. Children depend on their parents for food and clothing.

小孩依赖父母供给衣食。

2. turn into

（使）变成；（使）成为；

eg. From the evaporation of water, people know that liquids can turn into gases under certain conditions.

根据水的蒸发现象，人们认识到液体在一定条件下可以变成气体。

eg. Daytime historical views turn into nighttime romance over a twinkling Paris.

白日洋溢着历史气息的景色在转瞬间的巴黎变换成夜色下的浪漫。