One deep sea mine could send noise 500km across the ocean –report

Many deep-sea species - about which very little is known - are believed to use sound to navigate and communicate, as scientists call for limits on mining

Noise pollution from proposed deep-sea mining could radiate through the ocean for hundreds of kilometres, scientists predict, creating a cylinder of sound" from the surface to the sea bed.

An analysis by scientists from Oceans Initiative in the US, the National Institute of Advanced Industrial Science and Technology (AIST) in Japan, Curtin University in Australia and the University of Hawaii, published in the journal Science, has found that noise from one mine alone could travel 500km (more than 300 miles) in gentle weather conditions.