Over a million tons is left adrift in the ocean each year. 每年有超过一百万吨渔具被丢弃到海洋中
One of the most common items they find is discarded fishing gear. 最多见的漂浮物是废弃渔具
which is only about the size of your thumbnail, 只有拇指指甲大小
The open ocean is home to some of the largest 广袤的海洋是地球上一些最大的
is pushing many species toward extinction. 正在将许多物种推向灭绝的深渊
This is the moment the sea lions have been waiting for. 海狮等的就是这个时候
This is one of the world's most productive ecosystems. 这是世界上生产力最高的生态系统之一
This phytoplankton is so abundant that it produces half of all the oxygen on Earth. 大量的浮游植物产生了地球上一半的氧气