The Impact of Plastic

According to the U.S. National Academy of Sciences, 5.8 million metric tons (13 billion pounds) of trash, most of which is plastic, enter oceans each year. Apparently, 80% of marine debris comes from lands. Due to its chemical component, plastic does not easily biodegrade and stays in the water almost forever.

The Ambivalence of Plastic

Indeed, the reasons for which plastic was created are those harming oceans. These reasons are:

1. Lightweight: It easily floats on the water surface

2. Robust: Marine animals, including birds and mammals, get entangled by it

3. Resistant: It does not break and, therefore, biodegrade easily

4. Cheap: Since it is affordable to create, the amount of produced plastic is immense

Marine Dangers

Much of the waste present in garbage patches is plastic waste which can cause physical or chemical harm to oceanic flora and fauna. Larger pieces can become entangled in wildlife or lodged within a body when mistaken for food. Smaller microplastic particles can act as magnets to other ocean pollutants. When these particles are consumed by wildlife, the toxins upon and within them can and do bioaccumulate throughout the food web.

Plastic harms oceans, animals, and humans in many ways:

  • Entanglement: Marine animals get injured and even killed because of such plastic items as bags and other packaging.

  • Ghost fishing: Fishing nets left in the ocean continue catching animals and trap them without the ability to untangle.

  • Ingestion: Animals ingest the debris which this way destroys them from within.

  • Non-native species: Attached to plastic, the species move throughout the ocean to the places where it is not supposed to be. Some species like algae adapt and multiply quickly and change the microclimate.

  • Hazards for humans:

    • Food: Microplastic is found in seafood, sea salt, beer, and honey. However, its effect on human health is not estimated.

    • Vessel safety: Ships can get tangled up in the net and other debris that may lead to major breakage.

Image from University of Georgia, Janet A Beckley. A graphic that includes the following text and visuals: A clearer picture of plastics. Humans have created about 8.3 billion metric tons of plastics to date, outgrowing all man-made materials other than steel and cement. How heavy are 8.3 tons? 822,000 X The Eiffel Tower (10,100 metric tons). 25,000 X Empire State Building (331,000 metric tons). 80 million X Blue whale (104,5 metric tons), 1 billion X Elephants (7.5 metric tons). The rapid rise of plastics. A world without plastics seems unimaginable today, yet their large-scale production and use only date back to around 1950. Global plastic production estimates: 1950 - 2M metric tons, 2017 - 8.3B metric tons, 2050 - 34B projected metric tons. Plastic waste can be recycled, incinerated, or discarded where it accumulates in landfills. 9% recycled, 12% incinerated, 79% accumulated in landfills. Total plastic waste: 2015 - 6.3B metric tons, 2050 - 12B projected metric tons. University of Georgia, Janet A. Beckley.