A 'Wall' of Sound?

Many marine Mammals use echolocation to function effectively in their ocean environments. They also use sound for long-distance communication with members of their own species. Whales and dolphins will be put at increased risk by the noise pollution, generated by proposed deep sea mining projects (https://www.theguardian.com/environment/2022/jul/08/nowhere-is-free-from-noise-deep-sea-mining-threat-to-marine-mammals). A paper by the US's Oceans Initiative; Japan's National Institute of Advanced Science and Technology; Australia's Curtin University and the University of Hawaii, points out the noise pollution, from deep sea mining projects, will radiate out for hundreds of kilometres. Sound travels much further in seawater than it does in air. Whales use sound to attract mates etc. Noise pollution might well interfere with breeding and produce more strandings in whales and dolphins. Deep sea mining is not an activity that can be done quietly.