See if you can ID me. I`m both a mammal and a carnivore. I breathe air, although I don`t live on land. I don`t have much of a sense of smell, but I make up for it with a great sense of hearing.

看你能猜出我么。我既是哺乳动物又是食肉动物，我呼吸空气但又不住在陆地上。我嗅觉不太好但是我能听到来自很远的声音。

I`m a dolphin, and there are dozens of species of me around the world.

我就是海豚，在这个世界上还有许多我这样的生物。

And some of those species work for the U.S. Navy. Dolphins have been part of the Marine Mammal Program since the 1960s. These animals have a natural sonar ability called echolocation and they use it to help the Navy identify potential dangers.

一些这样的生物为美国海事机构服务。海豚是自从十九世纪六十年代就开始被美国海军海洋哺乳动物专案计划研究的物种之一。这些动物都有一种天然的声呐系统我们成为回声定位，用来帮助海军探测潜在的危险。

So you`ve heard of bomb-sniffing dogs? This is kind of like the underwater version. Kaj Larsen shows us how it all works.

你听说过安检犬么?而这，是一种水下探测工作。让我们来请Kaj Larsen向我们展示一下他们是怎样工作的。

Dolphins` jobs go beyond what the Navy calls swimmer interdiction. It turns out that they are good at finding not only people in the water but also things, things like mines.

海豚的工作远远超过了海军所谓的保护游泳者安全的任务。结果证明海豚不仅擅长搜救遇难者，并且可以检测地雷。

So the animal is using its echolocation, looking out in front of the boat.

所以这些动物就利用它们独有的回声定位系统，游走在船舶的前方，检测水域安全。

Braden Duryee supervises operations for the Marine Mammal Program and works with the Navy`s Explosive Ordinance Disposal Unit.

Braden Duryee负责操控海军海洋哺乳动物训练计划，并负责海军爆炸物的处理。

Over time we have to train the animals to discriminate between -- you know, it could be a lobster trap.

随着时间的推移，我们不得不训练这些动物学会区分，有些东西也许是龙虾。

Oh, sorry. Got a positive. Right now the animal just went positive.

哦，发现目标，现在这些动物就朝着发现物前进了。

All right, so what`s she doing now?

好样的，那她现在将做什么呢?

Right now, she`s carrying the marker down to the mine shape that she`s told us she`s found. That means the marker has deployed. The diver`s going to go down, go to that anchor and then do a circle search, verify that the animal has found the target.

她现在正拖着标志物潜入水下，然后告诉我们发现了东西。这就意味着标志物已经放好了，随后潜水员会潜到水下她投放的标志物那做一圈检查，确认这些小家伙们发现了目标。

In 2003, the Navy performed this operation in wartime, deploying mine-detecting dolphins to Iraq to ensure safe passage for humanitarian ships, meaning some of these dolphins are Iraq war veterans.

在2003年，海军军队将此成果运用到了战争中。这些用来探测水雷的海豚被部署到了伊拉克，为的是确保人道主义船只乘客的安全。也就是说，这些小家伙们也是参与伊拉克战争的一员。

What about danger to the animal? You`re asking them to go get close to explosive devices underwater.

你让这些动物这么近距离的接触爆炸物，那这些动物会遇到危险么?

Mines are very complicated, high-grade machinery. They are not set off to go on dolphins. They are set off to go on ships.

水雷是非常复杂精细而高水准的化学武器，它们遇到动物或人不会发生爆炸，只有在遇到船只的情况下才会引爆。

See if you can ID me. I`m both a mammal and a carnivore. I breathe air, although I don`t live on land. I don`t have much of a sense of smell, but I make up for it with a great sense of hearing.

I`m a dolphin, and there are dozens of species of me around the world.

And some of those species work for the U.S. Navy. Dolphins have been part of the Marine Mammal Program since the 1960s. These animals have a natural sonar ability called echolocation and they use it to help the Navy identify potential dangers.

So you`ve heard of bomb-sniffing dogs? This is kind of like the underwater version. Kaj Larsen shows us how it all works.

Dolphins` jobs go beyond what the Navy calls swimmer interdiction. It turns out that they are good at finding not only people in the water but also things, things like mines.

So the animal is using its echolocation, looking out in front of the boat.

Braden Duryee supervises operations for the Marine Mammal Program and works with the Navy`s Explosive Ordinance Disposal Unit.

Over time we have to train the animals to discriminate between -- you know, it could be a lobster trap.

Oh, sorry. Got a positive. Right now the animal just went positive.

All right, so what`s she doing now?

Right now, she`s carrying the marker down to the mine shape that she`s told us she`s found. That means the marker has deployed. The diver`s going to go down, go to that anchor and then do a circle search, verify that the animal has found the target.

In 2003, the Navy performed this operation in wartime, deploying mine-detecting dolphins to Iraq to ensure safe passage for humanitarian ships, meaning some of these dolphins are Iraq war veterans.

What about danger to the animal? You`re asking them to go get close to explosive devices underwater.

Mines are very complicated, high-grade machinery. They are not set off to go on dolphins. They are set off to go on ships.