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Nature Science - Whale and Marine Mammals Watching Curtailed Oceanic Dead Zones
An ocean dead zone is an area where the water is void of oxygen and thus nothing can live there. Without fish and plankton in the water there will be no reason for whales or other marine mammals to congregate. Dead Zones occur when the pollution from mankind gets into the coast areas through urban runoff or from fertilizers and nitrates that run off from agricultural areas and flow downstream into the ocean.