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Sharks have been top dog in the Pacific for millions of years.
鯊魚已經主宰了太平洋數百萬年
They control the numbers of other fish,
它們控制其他魚類的數量
and so play a vital role in keeping the underwater ecosystem healthy and diverse.
因此在維持水下生態系統的健康和多樣性方面扮演著重要角色
In French Polynesia, grey reef sharks gather.
在法屬波利尼西亞 灰礁鯊聚集在一起
While scalloped hammerheads patrol the Galapagos Islands,
而雙髻鯊游弋在加拉帕戈斯群島
these are rare hot spots where sharks converge in large numbers.
這是少數幾個有鯊魚大量聚集的地點
But divers claim this is just a fraction of the number of sharks they used to see.
但是潛水者說這些鯊魚只有他們過去看到的幾分之一
Many sharks are ocean migrants,
許多鯊魚是海洋移棲動物
travelling hundreds of miles in search of prey, like the oceanic whitetip.
穿越數百英里尋找獵物 比如長鰭真鯊
Amazingly, this may once have been the most abundant large animal on the planet.
令人吃驚的是 它們可能曾經一度是這個星球上數量最多的大型動物
But it's fallen prey to fishermen's hooks and nets.
但卻成了被漁夫的鉤和網毀滅的獵物
Surveys suggest oceanic whitetips may have declined by a staggering 99%.
調查表明長鰭真鯊的數量 可能已經驚人地銳減了99%
It's like the disappearance of bison from America's great plains,
如同美國大平原上野牛的消失
yet it's only happened in the past 50 years,
只是這發生在過去短短50年里
and almost no-one has noticed.
而且幾乎無人關注
Incredibly, the world's oceans may have lost more than 90% of their large predatory fish since industrialised fishing began.
難以置信地 自從工業化捕撈開始后 全世界的海洋損失了超過90%的掠食性魚類
