Protected Oceans, Unheard Depths
Earth Endeavours Newsletter By the time you stand at the edge of a Marine Protected Area, the ships have already spoken. Photo: Dr Sylvia Earle © Felix Kunze / Mission Blue Container vessels move across waters beyond sightlines, their propellers generating vibrations that travel through seawater at roughly four times the speed of sound in air. Low-frequency noise can travel long distances underwater, connecting places that appear separate at the surface. Marine Protected Areas are often...
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