Meanwhile, without scorning these theories, the Nautilus's crew captured half a dozen manatees.

而，尽管明了这些道理，“鹦鹉螺号”船上的人还是捕捉了6只海牛。

So far, the effort has provided the manatees with more than 25 tons of lettuce.

到目前为止，这项努力已经为海牛提供了超过25吨生菜。

Manatees fart to maintain the right buoyancy in water.

海牛放屁是为了在水中保持适当的浮力。

The environmental changes could threaten native animals including manatees and capybaras.

该环境变化可能威胁到包括海牛和水豚在内的本土动物。

During the coldest spells, more than 300 manatees can gather here.

在最冷的一段时间里，300多只海牛都集在这里。

The manatees let themselves be struck down without offering any resistance.

因为这些海牛面对捕捉丝毫不做反抗。

The manatee, named Naboo, needed medical treatment after a boat hit her.

这只名叫纳布的海牛曾遭一艘船撞击，亟须进行医疗救治。

Whether or not there's a universal manatee language remains to be seen.

是否存在一种通用的海牛语言还有待观察。

The other subspecies is the Florida manatee (Trichechus manatus latirostris) , which is also considered to be endangered.

另一个亚种是佛罗里达海牛（Trichechus manatus latirostris），它也被认为是濒危物种。

That's what manatees sound like when they're communicating in the warm, shallow waters around Florida.

这是佛罗里达温暖的浅水地区的海牛交流声音。

It's actually an artificial version of the natural hot springs where manatees traditionally congregate.

这其实是一种人工的天温泉，而海牛则一直喜欢在温泉集。

" We are adjusting our program to get as much food to manatees as we can" .

" 我们正在调整我们的计划，以便尽可能多地为海牛提供食物。"

When the algae die they release toxins that have killed fish, sea turtles, manatees and other animals.

海藻死亡后释放出的毒素，可以杀死鱼类、海龟、海牛和其它动物。

Take a swamp tour through the waters and look out for the Wildlife like alligators and manatees.

进行一次穿越水域的沼泽之旅，寻找鳄鱼和海牛等野生动物。

And so dolphins certainly manatees have a behavior when they get caught in a net, they spin.

海豚和海牛在被网缠住时会旋转。

And a female manatee has been released back into the waters off Florida, after months of rehabilitation.

在经过数月的康复治疗后，一名雌性海牛被放回佛罗里达的水域。

Manatees may be big, but they are not fat!

海牛可能体积很大，但是并不胖！

And during winter months when sea temperatures drop below 20 degrees centigrade, manatees gather here to keep warm.

在冬季的几个月里，海水的温度低于20摄氏度，海牛们则集在这里取暖。

Did you guess that they were from a blubbery, 10-foot long sea cow, otherwise known as a manatee?

你会猜这是肉乎乎的、10英尺长的海牛发出的吗？

Manatees are large, fully aquatic marine mammals that are sometimes referred to as sea cows.

Manatees（海牛）是大型的完全水生哺乳动物，有时也被称为 sea cows。