in the shallows in greater numbers,

在淺灘上的數量更多。

then it's not because of deep blue.

那就不是因為深藍。

The reason for the attacks remains elusive.

襲擊的原因仍然難以捉摸。

But while scouring the ocean for an explanation,

但在蒐羅海量的解釋時。

experts come across something else

高手過招

that also ensnares large amounts of a tiger shark's prey.

也能套住大量虎鯊的獵物。

But it's not another sea creature.

但它不是另一種海洋生物。

In fact, it walks on two legs.

事實上，它是用兩條腿走路的。

NAIA RAE FOX: I think the reason why we are having more sharks

NAIA RAE FOX：我想我們之所以有更多的鯊魚。

here actually is because the amount of fishing

這裡其實是由於釣魚的數量

that's been going on.

這一直是怎麼回事。

NARRATOR: This is one of the island's most popular

這裡是島上最受歡迎的地方之一。

activities, sport fishing.

活動，運動釣魚。

Every year, recreational anglers haul in more

每年，休閒垂釣者們都會釣到更多的魚。

than 2 million pounds of fish.

超過200萬磅的魚。

That means that on any given day off the big island,

這意味著，在大島外的任何一天。

there are hundreds of fish being caught and reeled in.

有成百上千的魚被釣到並被捲走。

And for scientists like Dr. Dan Huber,

而對於像丹-休伯博士這樣的科學家來說。

these hooked sea creatures may be attracting sharks.

這些被鉤住的海洋生物可能正在吸引鯊魚。

DAN HUBLER: A struggling fish, as its body

一條掙扎著的魚，因為它的身體... ...

is twitching a bit, that motion is giving

是抽搐了一下，這個動作是給了

off low frequency sounds.

關閉低頻聲音。

And shark hearing happens to be tuned

而鯊魚的聽力恰好被調

into low frequency sounds.

成低頻聲音。

This is definitely something that could attract a number

這絕對是可以吸引一些

of sharks to the same area.

的鯊魚到同一地區。

NARRATOR: So could sport fishing be drawing tiger sharks

那麼運動釣魚會不會引來虎鯊呢？

into the shallows, thereby increasing

入淺灘，從而增加

the risk of an accidental run in with people?

不小心與人發生衝突的風險？

According to fisherman Rick Rieger,

據漁民Rick Rieger介紹。

it comes down to where the best sport fishing takes place.

它歸結為最好的運動釣魚的地方。

To demonstrate, he heads out to an area well

為了演示，他前往一個區域，好

known for the popular pastime.

以流行的消遣方式而聞名。

RICK RIEGER: So this is our bottom here.

所以這是我們的底氣所在。

We have some of the steepest drop offs

我們有一些最陡峭的落差。

in the whole world right here.

在整個世界就在這裡。

This is where you're going to see your tuna, your mahi-mahi,

在這裡你會看到你的金槍魚，你的鯕鰍。

your ono, your marlin.

你的奧諾，你的馬林魚。

NARRATOR: This location could hold a vital clue

這個地方可能有一個重要的線索。

to solving the mystery.

以解開這個謎團。

Called the pelagic zone, this open water

這片開闊的水域被稱為中上層區域。

abyss extends thousands of miles between

萬丈深淵

the continental shelves.

大陸架。

It's home to an array of large sea creatures--

這裡是一系列大型海洋生物的家園... ...

whales, manta rays, big game fish, and some of the most

鯨魚、蝠鱝、大魚，還有一些最常見的

dangerous sharks on earth.

地球上危險的鯊魚。