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Tuna fishing has grown into an eight-billion dollar industry.
金槍魚捕撈已經(jīng)發(fā)展成一項(xiàng)八十億美元的產(chǎn)業(yè)
And over four million tonnes of tuna are caught worldwide each year, a four-fold increase in as many decades.
每年在全世界有超過四百萬噸金槍魚被捕撈 每十年增加四倍
Almost two-thirds of the catch now comes from the Pacific.
目前有幾乎三分之二是來自太平洋
In the Atlantic, yellowfin catches have been shrinking since 1990.
在大西洋 黃鰭金槍魚的捕獲量 自1990年以后就一直下降
Now a similar decline has begun in the Pacific.
現(xiàn)在相似的減少已經(jīng)在太平洋開始
Tuna need to swim constantly to keep water flowing over their gills, otherwise they can't breathe.
金槍魚需要持續(xù)游動(dòng) 使海水流過它們的鰓 否則它們不能呼吸
The fishermen want to get them out of the water as quickly as possible.
漁工要盡快地把他們弄出水
When starved of oxygen, a build-up of lactic acid in their muscles causes the quality of their meat to deteriorate.
當(dāng)缺氧時(shí) 它們的肌肉中會(huì)有乳酸形成 導(dǎo)致肉質(zhì)惡化
The fish are scooped up from the water, a tonne or two at a time.
魚被撈出水 每次一兩噸
Every last fish from this school of 7,000 yellowfin and skipjack tuna is plucked from the water.
這個(gè)7,000尾的黃鰭金槍魚和鰹魚魚群中的 每一條魚都被拖出水面
With fishing techniques now so efficient, and with ever more vessels plying the Pacific,
今天捕漁技術(shù)的高效 加上越來越多往來于太平洋的漁船
there is real concern among biologists that even the resilient skipjack may begin to decline.
生物學(xué)家們真正擔(dān)心的是 甚至恢復(fù)力強(qiáng)的鰹魚也可能開始減少
