Here is what Peter (SIII) wrote
There should be a lot of concern because so much waste is being dumped that the sea will become a mess of rubbish and sewage and one thing affects another, eg like a marine tanker accident pours thousands of gallons of oil into the sea and therefore thousands of fish die so the fishing industry will lose buisness but in poorer countries people will be forced to eat the poissoned fish and they can become ill and may have childrenborn with defects. Dumping sewage into the sea looks bad and in places such as the Mediterranean Sea can seriously pollute the water as most water stays in the sea and doesn't circulate so the pollution stays there and now this sea is one of the most polluted in the world. Fishing is good in controlled amounts but overfishing on species such as cod is a serious problem and can wipe out species completely causing a chain reaction to fish higher up the food chain.
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Overfishing is a major concern-stocks of fish like cod are dangerously low. It is estimated that the world could actually run out of many species of fish by 2050. Oil slicks remain a big worry, too-affecting tourism, local economies and wildlife such as seabirds and seals.
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