How are Oceans polluted?

We pollute oceans by dumping waste materials into the oceans.Waste oil is dumped in oceans etc . == == Answer:Oceans are polluted from several sources: * Gases like carbon dioxides are absorbed into the water from the air * Purposeful discharges of ballast water from ships and other sources (As an example New York used to haul all of it garbage out to sea for dumping /disposal) * Accidental discharges like oil spills from ships and oil/gas wells

* Ongoing long term discharges from ocean side cities of sewage and other fluid waste * Silt from rivers * Industrial and sanitary seage from inland cities reaching the ocans from rivers * Casual littering from vessels and beaches

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The ocean gets polluted from fertilizer run off from poor agricultural practices, oil washed off roadways and oil spills, and plastic recyclables thrown off ships and washed into waterways and rivers.