An Australian newspaper released an audio clip and other information . Low frequency signals can travel thousands of miles through water under favorable circumstances , at about 1 mile per second , Duncan said . Researchers have studied records from underwater listening devices . A sound that was picked up is not near the current dive area for MH370 . The academics say it could be related to the diving activity , or just a natural event .
An Australian newspaper released an audio clip and other information . Researchers have studied records from underwater listening devices . A sound that was picked up is not near the current dive area for MH370 . The academics say it could be related to the diving activity , or just a natural event .