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[Thematic Report] Toxic Chemicals and Their Detrimental Effects on Marine Ecosystems

by Yvonne An | 16-08-2020 04:34 recommendations 0

Approximately 80% of every marine organism, from the smallest plankton to polar bears and giant whales, are contaminated with human-made chemicals in conventional consumer products. These chemicals are released to the ocean through deliberate dumping. For generations, the oceans have been a primary dumping ground for land waste. Sea dumping continued until the 1970s – it was the accepted practice for waste disposal, including hazardous contaminants and even radioactive waste.

 

Toxic chemicals are also introduced into the sea from land-based activities. Chemicals escape into the soil, water, and air during manufacture, use, or disposal (or even accidental fires or leaks in products containing these chemicals). Once they are in the environment, they can spread to long distances in water and air, including sea currents. People once believed that the sea was vast enough for all contaminants to be diluted and to safe degrees. However, in reality, they have not disappeared; Toxic human-made chemicals have become even more concentrated as they were introduced to the food chain.

 

Small animals at the lower end of the food chain, such as plankton in the oceans, absorb the chemicals they feed. Because they do not break down quickly, the remnant chemicals accumulate and become  more concentrated within their bodies than in the surrounding water or soil. Smaller animals eat these organisms, and the concentration increases again. In turn, these animals are eaten by larger animals, which can travel vast distances with their heavier chemical load.

 

Larger animals at the higher end of the food chain, such as seals, can have contamination levels billions of times higher than the surrounding water in which they live. Moreover, polar bears that feed on seals can have contamination levels up to 3.5 billion times higher than their surrounding environment.

 

Whether it be by using human-made commercial products or by consuming contaminated seafood animal fats, people become contaminated directly from the hazardous chemicals. Evidence is mounting that many human-made chemicals may pose serious health threats as they can lead to cancer, reduced fertility, behavioral problems, and immune system malfunction.


 
Toxic Chemicals

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5 Comments

  • Asmita Gaire says :
    Greetings Yvonne
    I hope you are doing well
    These toxic chemicals have hazardous effects in the body
    Thank you so much for this report
    Green cheers
    Regards
    Asmita Gaire
    Posted 18-09-2020 12:34

  • Sang Su Mentor says :
    Hi Yvonne An, this is a mentor, Sang Su Lee.

    I am really sad that man made chemicals are severely disturbing the marine ecosystem. This is not good for humans too because the ecosystem is connected closely to each other.

    Green cheers~!
    Posted 31-08-2020 03:30

  • Bal krishna Pandey says :
    Thank you very much for your report on Toxic Chemicals and Their Detrimental Effects on Marine Ecosystems. Toxic chemicals have negative effects in all kinds of ecosystem.
    Green cheers~
    Posted 18-08-2020 15:13

Kushal Naharki

  • Kushal Naharki says :
    Hello Yvonne

    Greetings and Namaste from Nepal
    Wishing you a safe stay
    Thank you for your report on Toxic Chemicals and Their Detrimental Effects on Marine Ecosystems

    Keep writing great reports.
    We are eager to read more reports from you.
    Green Cheers :)

    Best wishes,
    Kushal Naharki

    Posted 17-08-2020 20:29

  • Taehyun Mentor says :
    Hello Yvonne An this is mentor Taehyun!

    Among chemicals, organic chemicals are not easily decomposed in nature, but spread along the food chain, so it is scary that they come up to the top predator with ignored risks and then reveal their true selves when they become lethal. I think our attention can solve this problem.

    Thank you for the report!

    Green cheers!
    Posted 17-08-2020 16:35

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