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  2. Human impact on marine life - Wikipedia

    en.wikipedia.org/wiki/Human_impact_on_marine_life

    The biggest threat of ocean plastic pollution comes from microplastics. These are small fragments of plastic debris, some of which were produced to be this small such as microbeads. Other microplastics come from the weathering of larger plastic waste. Once larger pieces of plastic waste enter the ocean, or any waterway, the sunlight exposure ...

  3. Marine pollution - Wikipedia

    en.wikipedia.org/wiki/Marine_pollution

    While marine pollution can be obvious, as with the marine debris shown above, it is often the pollutants that cannot be seen that cause most harm.. Marine pollution occurs when substances used or spread by humans, such as industrial, agricultural and residential waste, particles, noise, excess carbon dioxide or invasive organisms enter the ocean and cause harmful effects there.

  4. Environmental issues with coral reefs - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues_with...

    With primary causes being warming ocean waters, ocean acidity, and pollution. [3] In 2008, a worldwide study estimated that 19% of the existing area of coral reefs had already been lost. [ 4 ] Only 46% of the world's reefs could be currently regarded as in good health [ 4 ] and about 60% of the world's reefs may be at risk due to destructive ...

  5. Earth's biggest cluster of ocean trash, the Great Pacific ...

    www.aol.com/article/news/2018/03/30/great...

    The team found that plastic pollution levels within the GPGP have been growing exponentially since all ocean pollution measurements began in the 1970s. ... Tariff threats, drug pricing will be 2 ...

  6. Marine plastic pollution - Wikipedia

    en.wikipedia.org/wiki/Marine_plastic_pollution

    In 2015, it was calculated that 275 million tonnes (303 million short tons) of plastic waste was generated in 192 coastal countries in 2010, with 4.8 to 12.7 million tonnes (5.3 to 14 million short tons) entering the ocean – a percentage of only up to 5%. [19] Most land-based plastic pollution enters the ocean from South, Southeast, and East ...

  7. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    The types of marine pollution can be grouped as pollution from marine debris, plastic pollution, including microplastics, ocean acidification, nutrient pollution, toxins and underwater noise. Plastic pollution in the ocean is a type of marine pollution by plastics , ranging in size from large original material such as bottles and bags, down to ...

  8. Ocean acidification - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification

    Warm water corals are clearly in decline, with losses of 50% over the last 30–50 years due to multiple threats from ocean warming, ocean acidification, pollution and physical damage from activities such as fishing, and these pressures are expected to intensify. [109] [21]: 416

  9. Plastic degradation by marine bacteria - Wikipedia

    en.wikipedia.org/wiki/Plastic_degradation_by...

    Plastic degradation in marine bacteria describes when certain pelagic bacteria break down polymers and use them as a primary source of carbon for energy. Polymers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) are incredibly useful for their durability and relatively low cost of production, however it is their persistence and difficulty to be properly ...