BBC | 脆弱天堂 08
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The waterjets break up the outline of the boat from below
喷水式推进器从下面把船的轮廓打散
And mimic the noise and commotion of baitfish when under attack.
并且模仿发出饵鱼在受到攻击时的噪声和骚动
Meanwhile, live baitfish are strewn around the boat to keep the tuna interested.
与此同时，活鱼饵散布在船的周围以吸引金枪鱼
It may look like a lot of effort for a few fish
这看起来可能有些小题大做
But this pole and line technique of fishing can be surprisingly effective.
但这种垂钓的方式却出奇的有效
Fishing for export is now big business in the tropical Pacific
出口鱼类现在是热带太平洋最大的贸易
With tuna alone accounting for 30 times more fish than
以捕鱼为生的渔民捕捉的鱼的数量中
all the fish caught by subsistence fishermen.
金枪鱼是其他种类的鱼30多倍
So is commercial fishing sustainable?
所以照这样的趋势商业捕鱼能够达到可持续吗？
Skipjack are the smallest
鲣鱼是体型最小的
And by far the most abundant tuna species in the Pacific.
也是迄今为止太平洋里数量最多的一种金枪鱼
They reach maturity in just a year
它们在一年内达到成熟
And then spawn many times within a season.
并在一个季节多次产卵
They seem to be the perfect catch
它们这样的繁殖节奏似乎是最适合捕捉
As their numbers just keep bouncing back.
因为它们的数量总是在某个水平上上下波动
But not all marine life is so resilient.
但是不是所有的海洋生物都有如此数量弹性
Thanks to modern fishing
由于现代渔业
Some of the best-known animals of the Pacific are in deep trouble.
太平洋上一些广为人知的动物深陷危机
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