海豚,dolphins,快!求

题目

海豚,dolphins,快!求
How long can dolphins live?
How far can a dolphin swim in a day?
How fast can dolphins swim per hour?
How do dolphins sleep?
How long do dolphins sleep?
回答,快!
要准确的答案！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！

答案

yes yes most of them can live twenty years their speed can be 40kilometers perhour their sleeptime is not fixed they sleep when they are swimming they can swim 600kilometers in the day