At night, the algae are inactive but then, the polyps put out even more tentacles 到了晚上,共生藻停止工作 珊瑚开始释放更多的触手
but these coral havens contain one quarter of all the marine life on our planet. 不过珊瑚礁汇聚着地球上四分之一的海洋生物
They receive year round sunlight but they lack the nutrients essential for the growth of plankton. 虽然充满阳光 但是这里主要缺少浮游生物生长所需的养分
but they contain the vast majority of it's marine life. 不过大多数的海洋生物都生活在这里
but exactly why they cannibalize the dead chimp, is not fully understood. 但是还搞不清楚它们究竟为什么要吃同类
but they'll soon reach the limits of their power. 但是它们很快将盛极而衰
But there's something special about this stretch of forest in Uganda. 乌干达的热带雨林有些特别
It may be mud, but there's just nothing quite like it for enriching the blood. 虽然有些牙碜 不过到了血液里也就没什么了