Deep Pacific Ocean Is Awash With Strange Sounds
Researchers have lowered a microphone underwater and recorded ambient noises from the deepest known trench in the Earth’s seabed, the Challenger Deep in the western Pacific Ocean. The BBC reports: For the first time, scientists have obtained audio recordings from 7 miles (11km) below sea level in Challenger Deep, the deepest part of the Mariana Trench, south-west of Guam. They reveal a soundscape rich with the rumble of earthquakes, the deep moans of whales – and the mechanical whirr of ships.