Gyre" (system of rotating currents). The circular direction of the gyre drives debris to the center and since the water moves slower towards the center, it traps the debris.
The Great Pacific Garbage Patch was discovered by Charles Moore in 1997 as his team was sailing from Hawaii to California. According to the National Geographic, 80% of debris comes from land-based activities in North America and Asia while the remaining percent comes from boats and large cargo ships(mainly in the form of old fishing nets). The plastic in the patches does not biodegrade (get eaten by bacteria and other living organisms). Instead, it photodegrades (breaks down from sun exposure) and breaks into tiny pieces (microplastics) that act like sponges and absorb toxic chemicals. These pieces of plastic are hard to discover because they cannot be identified by the naked eye, may look like other small marine creatures, and may not rise to the surface. As the plastic lingers, it can entangle other creatures, prohibiting them from breathing, moving or eating, which ultimately leads to death. Also, other creatures may mistaken the plastic products for their prey and if enough plastic is consumed, their intestines will be clogged and they will starve to death. The debris disrupts food webs because the microplastics block sunlight which hinder the rate at which primary producers such as plankton and algae can produce food for the other organisms in the ecosystem. As a result, the different populations of species will suffer due to the lack of food.
Marine Debris easily accumulates in the Great Pacific Garbage Patch |
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