The West Indian Manatee wasn't present during the last ice age, but returned here as the waters warmed up.

西印度海牛在冰河时代末期并不存在，但是当这里的温度升到后来到了这里。

The creature is one of two subspecies of the West Indian manatee (Trichechus manatus) — also known as the North American manatee.

这种生物是西印度海牛（Trichechus manatus）的两个亚种之一，也被称为北美海牛。

The West Indian Manatee uses farting to regulate its buoyancy.

西印度海牛使用放屁来调节其浮力。

The West Indian manatee, the Florida manatee is an example, is no longer considered an endangered species by the U.S. federal government.

西印度海牛，佛罗里达海牛就是一个例子，美国联邦政府不再将其视为濒危物种。