A friendly manatee may swim right up and touch your face with his .
一头友好的海牛可能会径自游向你,然后和你贴面。
These marine mammals , like their manatee relatives , must surface every five minutes or so for a fresh breath .
这些像它们跟海牛是亲戚的海洋生物,一定要在5分钟左右探个头,呼吸点新鲜空气。
It was a manatee , and by the looks of the reddish-colored water and the way it was thrashing , it was in trouble .
原来是一只海牛,从略带红色的海水和它摆动尾巴的方式来看,它陷入了麻烦。
It is home to a number of research institutions including the smithsonian institution research center , the manatee observation & education center , and the harbor branch oceanographic institute .