Sadly, just the last few years, these animals have all but disappeared from this incredible.

遺憾的是，就在過去的幾年裡，這些動物幾乎都從這個不可思議的地方消失了。

But it is terrible to see how that is happening under our watch.

但是，看到這種情況如何在我們的眼皮底下發生，實在是太可怕了。

Yeah, For many years, surfers on these beaches have known they have to keep a close.

是啊，多年來，這些海灘上的衝浪者都知道他們必須保持密切。

Watch out for the white flag on for the siren that indicate a great white shark has been spotted close to shore.

注意白色旗幟上的警笛，表示在岸邊發現了一條大白鯊。

But for the last two years away, that's changed dramatically.

但對於最近兩年的離開，這種情況發生了巨大的變化。

Wherever you go, if you put your feet into the water, you expect to encounter, which are.

無論你走到哪裡，如果你把腳伸進水裡，你都希望能遇到，這就是。

But that's not the case no more.

但現在的情況已經不是這樣了。

I don't even remember the last I've seen the show.

我都不記得最後一次看這個節目是什麼時候了。

Beautiful day Clear Blue Ocean.

美麗的一天 晴朗的藍色海洋

Any sharks?

有鯊魚嗎？

No, not at the moment.

不，目前沒有。

None at all.

完全沒有。

None at all.

完全沒有。

No white sharks and false bear us.

沒有白鯊和假熊我們。

One of the standout theories is the arrival of a specific type of orca.

其中一個突出的理論是一種特殊類型的虎鯨的到來。

In 2000 and 15, we saw the arrival of this pair of orcas.

在2000年和15年，我們看到了這對虎鯨的到來。

They're very distinctive.

他們很有特色。

They have dorsal fins that flop over on.

它們有背鰭，可以在上面翻轉。

They feed specifically on sharks tow us the arrival of thes orcas on then the reduction in shark activity.

它們專門以鯊魚為食 拖我們的到來 逆戟鯨然後減少鯊魚活動。

It does all seem to be correlated.

這似乎都是相關的。

It appears that the orders arrive and the sharks just are aware that they are no longer the apex predator anymore.

看來，命令到了，鯊魚只是意識到自己不再是頂級掠奪者了。

So logic tells you if your food is not available here you go look elsewhere.

所以邏輯告訴你，如果你的食物在這裡沒有，你就去別的地方找。

And that's what a lot of us believe is.

而這也是我們很多人相信的是。

What actually happened was tragic irony with the whole disappearance of our sharks.

其實發生的事情是慘痛的諷刺，我們的鯊魚整個消失了。

Is that the over exploitation off the smaller shark species along the South African coastline is to meet the demand for fish and chips in Australia?

南非海岸線上的小鯊魚品種被過度開發，是為了滿足澳洲對魚和薯條的需求嗎？

Mhm.

嗯

Unfortunately, we're suffering a lot.

不幸的是，我們吃了不少苦頭。

It's Ah very, very difficult times for the whole town.

這是一個非常非常困難的時期，對整個城市。

For the whole town.

對於全鎮。

Yes, the whole industry.

是的，整個行業。

Yes, it is really, really sad.

是的，這是真的，真的很傷心。

We miss these shocks a lot.

我們非常想念這些避震器。

My name is Dr Sarah Andreotti.

我叫莎拉-安德烈奧蒂博士

I am a marine biologist and a postdoctoral researcher at the University of Stellenbosch.

我是一名海洋生物學家，也是斯坦陵布什大學的博士後研究員。

500 to in these two.

500元到在這兩。

Thank God, that's much better.

謝天謝地，這樣就好多了。

Now we're talking okay, that all too enough.

現在我們說好了，這一切都夠了。

We want to try and take a genetic sample from the sharks.

我們想試著從鯊魚身上取一個基因樣本。

To do that with that state realized biopsies Sampler way will take a piece of tissue out of the shark skin.

要做到這一點，與該狀態實現活檢Sampler方式將採取一塊組織的鯊魚皮膚。

Thomas Fisher back to when I went in and we got something way.

托馬斯-費舍爾回到了我進去的時候，我們得到了一些東西的方式。

Have to collect these very carefully.

要非常小心地收集這些。

I'm white.

我是白人

Sharks are top predators, so they are actually much more vulnerable than other species to climate change.

鯊魚是頂級的捕食者，所以它們其實比其他物種更容易受到氣候變化的影響。

Pollution that can if you have heavy metal in the water, the animals at the top of the food chain of the one that accumulate the heavy metal so that will interfere with reproductive system.

汙染，可以如果你有重金屬在水中，動物在食物鏈的頂端的一個積累的重金屬，所以會干擾生殖系統。

Is it very frustrating for you not be ableto keep testing great whites?

你不能繼續測試偉大的白人，是不是很沮喪？

Yes, it's also it is not just frustrating is feeling that that happened under our watch.

是的，它也是它不只是沮喪是感覺，發生在我們的眼皮底下。

You know, we saw the sharks.

你知道，我們看到了鯊魚。

We saw the numbers were not great on the work we did wasn't enough to get them, uh, environment better protected in a way.

我們看到的數字並不是很大，我們所做的工作還不足以讓他們，呃，環境在某種程度上得到更好的保護。

Or maybe it was just too late.

也可能是為時已晚。

So the frustration comes from the feeling that maybe we just didn't do enough.

所以，挫折感來自於覺得，也許我們只是做得不夠好。

Okay, Alright.

好吧，好吧。

How does that feel?

這感覺如何？

Good, Right?

很好，對吧？

Let's get thio.

讓我們得到的Thio。

Plenty of beautiful sharks down here, but no great whites, none at all on so many theories about why they may have disappeared.

這裡有很多漂亮的鯊魚，但沒有大白鯊，在這麼多關於它們為什麼會消失的理論中，根本沒有。

But the real fear is that they may have gone for good.

但真正擔心的是，他們可能已經一去不復返了。

Sure, if we keep on doing what we're doing, we're not giving them a chance.

當然，如果我們繼續做我們正在做的事情，我們不會給他們一個機會。

If we start changing the way we've been doing things, then it is basically upto them.

如果我們開始改變我們一直以來的做法，那麼基本上是由他們來決定的。

If there are still enough to restock their old problem that our human related so humans should do something about it, let's just wait and see.

如果還有足夠的補給他們的老問題，我們的人類有關，所以人類應該做點什麼，我們就拭目以待吧。

It's like I still strongly believe that look like the Sharks will come back.

這就像我仍然堅信，看樣子鯊魚會回來。

It's just a matter of time.

這只是一個時間問題。

The best we can do is just keeping collecting data and keep looking.

我們能做的最好的就是繼續收集數據，繼續尋找。

They will come back, that's for sure.

他們會回來的，這是肯定的。

That's my personal belief, yeah.

這是我個人的信念，是的。