What It Sounds Like to Be a Whale

In the last decade, scientists have realized that noise generated by ships often drowns the natural sounds of the sea. Some types of sonar, especially those used by military vessels, can be heard for hundreds of miles. Together with engine noise, these produce an aquatic roar heard across Earth’s oceans, often at levels that humans associate with airports and rock concerts.

What It Sounds Like to Be a Whale | Wired.com