ocean noise

Three dimensional perspective of bathymetry at Challenger Deep, Mariana Trench. Challenger Deep is located along axis of Mariana Trench. Tectonic plates, major faults and seamounts in the area are labeled. Source of image is Center for Coastal and Ocean Mapping - Joint Hydrographic Center

Noisy Mariana Trench

Elizabeth Borneman

The researchers put a microphone encased in titanium and sent it to a depth of six miles in the Mariana Trench. The scientists were able to hear the propellers of passing ships on the surface, the sounds of a storm passing overhead, and the calls of whales.