Blue whales communicate at volumes up to 185 decibels, and can be heard tens of kilometers away and possibly even hundreds of kilometers away. It is believed that the U.S. Navy’s Sound Navigation and Ranging (SONAR) transmitters can produce sounds underwater up to 215 decibels. To provide a frame of reference, the Saturn V rocket launch produced a sound of 200 decibels, loud enough to kill a human being. The blue whale is the loudest animal within the ocean in terms of continuous, sustained sound