You know how you can hear the ocean when you hold a shell up 'in your ear? Think that put her through an amplifier with a lot of reverberation, and that's what it looks like at the bottom of Mariana Trench in the Pacific Ocean, which reaches depths of 36,000 feet.
Scientists dropped a hydrophone titanium embedded in the deepest part of the ocean and strange noises recorded for three weeks, capturing the sounds of earthquakes, the calls of whales, ships, and the waves pass over. Here are some of the spookiest sounds they managed to capture.
This is what it sounds like when a swimming whalebone seven miles below the surface.
And here is what a ship sounds like there.
These records and were collected by the National Oceanic and Atmospheric Administration, Oregon State University, and the Coast Guard of the United States to determine if the noise increases over time. They plan to have another go at it in 2017 to see if the ocean seems even more terrifying than it does now.
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