Omar Khalid
The Great Pacific Garbage Patch (GPGP) is the largest accumulation of plastic in the open ocean. It is located in the Northern Pacific Ocean and spans an area of 1.6 million square kilometres, with a staggering 1.8 trillion plastic pieces. The GPGP was discovered in 1997 by Captain Charles Moore, who noticed a steady stream of plastic waste while sailing from Hawaii to California. Despite its name, the GPGP is not a continuous island of trash. Instead, it is a widely dispersed area of microplastics, with larger items such as fishing gear and shoes interspersed. While the public often imagines the GPGP as a solid mass, it is important to understand that it is a dynamic and dispersed accumulation of plastic waste, which makes it challenging to visualise and clean up.
| Characteristics | Values |
|---|---|
| Name | Great Pacific Garbage Patch (GPGP) |
| Other Names | Pacific trash vortex, North Pacific Garbage Patch, Plastic Island |
| Location | Northern Pacific Ocean, from 135°W to 155°W and 35°N to 42°N |
| Size | 1.6 million square kilometres or 617,800 square miles |
| Weight | 79,000 tons |
| Plastic Pieces | 1.8 trillion |
| Plastic Concentration | 10-100 kilograms per square kilometre |
| Microplastics | Present |
| Plastic Weight Compared to Marine Life | 180 times more plastic |
| Marine Life Impact | Sea turtles, albatrosses, invertebrates, etc. |
| Human Impact | Chemicals from plastic can enter the human food chain |
| Cleanup Efforts | The Ocean Cleanup project, Coastal Conservancy, Earth Day, World Cleanup Day |
| Discovery | 1997 by Captain Charles Moore |
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What You'll Learn
The Great Pacific Garbage Patch is not a solid mass
The Great Pacific Garbage Patch (GPGP), also known as the Pacific trash vortex or the North Pacific Garbage Patch, is a gyre of marine debris particles in the central North Pacific Ocean. It is not a solid mass, but rather a dispersed area of plastic pollution, with a concentration of 10-100 kilograms per square kilometre.
The GPGP is the largest accumulation of plastic in the open ocean, spanning an area of 1.6 million square kilometres, or 617,800 square miles, and containing more than 1.8 trillion plastic pieces. It was discovered in 1997 by Captain Charles Moore, who noticed a steady stream of plastics bobbing in the ocean.
The patch is composed of two smaller patches: the Western Garbage Patch near Japan and the Eastern Garbage Patch between Hawaii and California. The plastic in the GPGP comes from various sources, including runoff from land, littering, illegal dumping from boats, and construction. The majority of the debris enters the ocean by the coastline, and some of it enters through vessels.
The GPGP is not a solid mass, but a collection of floating debris pushed together by the currents of the Pacific Ocean. It is made up of various types of plastic and other debris, including microplastics, which are tiny pieces of plastic that are often microscopic and cannot be seen by the naked eye. These microplastics make the water look like a cloudy or murky soup, intermixed with larger items such as fishing gear and shoes.
The Ocean Cleanup project has been working to remove plastic from the GPGP, and by November 2024, they had reached a milestone of 20 million kilograms of trash removed. However, the patch continues to grow, and it is estimated that it is now twice the size of Texas. The plastic in the patch is detrimental to marine life, leading to plastic ingestion, entanglement in fishing nets, and other injuries.
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The patch is made up of microplastics
The Great Pacific Garbage Patch (GPGP), also known as the Pacific trash vortex or the North Pacific Garbage Patch, is the largest accumulation of plastic in the open ocean. It was discovered in 1997 by Captain Charles Moore, who noticed a steady stream of plastic waste while sailing from Hawaii to California. The GPGP is not a solid mass or floating island, but rather a dispersed area of plastic waste, mostly consisting of microplastics.
Microplastics are tiny pieces of plastic that are often microscopic in size. They are formed when larger plastics break down due to exposure to UV radiation from the sun and crushing waves, a process known as photodegradation. These microplastics are not easily visible, making it difficult to detect the GPGP through satellite imagery or even by casual boaters or divers in the area. However, the patch can make the water look like a cloudy or murky soup, with larger items such as fishing gear intermixed.
The GPGP is located in the Northern Pacific Ocean, spanning an area of approximately 1.6 million square kilometres or 617,800 square miles. It is composed of two smaller patches: the Western Garbage Patch near Japan and the Eastern Garbage Patch between Hawaii and California. The patch is constantly growing, with plastic debris entering the ocean through various means, including runoff from land, littering, improper waste disposal, and construction.
The impact of the GPGP on marine life is significant. Animals migrating through or inhabiting this area are likely to consume plastic, leading to the ingestion of toxic chemicals attached to the plastic. For example, sea turtles and albatross chicks have been found with a significant percentage of their diets or body mass composed of plastics from the GPGP. Additionally, fishing nets and other discarded plastic materials can entangle and harm marine creatures.
Efforts to clean up the GPGP have been undertaken by organisations such as The Ocean Cleanup, which has removed millions of kilograms of trash from the patch. However, addressing the root cause of plastic pollution through reduced consumption of single-use plastics and proper waste disposal is crucial to slowing the growth of the GPGP and protecting marine ecosystems.
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Plastic pollution's impact on the marine food chain
The Great Pacific Garbage Patch is the largest accumulation of plastic in the open ocean. It is located in the central North Pacific Ocean, bounded by the North Pacific Subtropical Gyre, and is formed by four currents: the California Current, the North Equatorial Current, the Kuroshio Current, and the North Pacific Current. The circular motion of the gyre draws debris into its stable center, trapping it. While many different types of trash enter the ocean, plastics make up the majority of marine debris due to their durability, low cost, and malleability. Plastic does not biodegrade but instead breaks down into smaller pieces, known as microplastics, which can be mistaken for food by marine organisms.
Microplastics can enter the marine food web through organisms of all sizes, from zooplankton to larger predators. For example, seabirds may mistake small plastic fragments for food, leading to suffocation, starvation, or toxic contamination. Similarly, loggerhead sea turtles often mistake plastic bags for jellyfish, their favorite food. Albatrosses feed their chicks plastic resin pellets, mistaking them for fish eggs, leading to starvation or ruptured organs.
Once plastic enters the marine food web, there is a risk of contaminating the human food chain as well. Chemicals in plastics can enter the body of an animal feeding on the plastic, and as that animal becomes prey, the chemicals pass to the predator, moving up the food web. These chemicals can have unique and species-specific impacts, and the accumulation of toxins in apex predators such as great white sharks and orcas poses a significant threat.
The impact of plastic pollution on marine organisms is widespread, with an estimated contribution to the death of more than 100,000 marine mammals annually. Plastic pollution also has economic implications, reducing the value of marine ecosystem services by billions of dollars each year. Efforts to clean up ocean plastic, such as the Ocean Cleanup project, have made progress in removing millions of kilograms of trash, but the challenge remains vast and complex.
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The environmental impact of plastic islands
The Great Pacific Garbage Patch (GPGP), also known as the Pacific trash vortex or the North Pacific Garbage Patch, is the largest accumulation of plastic in the open ocean. It is located in the central North Pacific Ocean and spans an area of 1.6 million square kilometres, containing more than 1.8 trillion plastic pieces. The GPGP is not a single giant floating island but a widely dispersed area consisting primarily of "fingernail-sized or smaller" particles in the upper water column known as microplastics. These microplastics are often microscopic and cannot be seen by the naked eye, making the patch appear like a cloudy or murky soup of different-sized plastics.
Another issue is the entanglement of marine creatures in plastic debris, particularly old fishing nets and gear, which make up a significant portion of the GPGP. This entanglement can cause injuries and make it difficult for animals to swim or escape, leading to catastrophic consequences. Additionally, plastic islands can create a blanket effect on the surface of the water, blocking sunlight from reaching photosynthetic plankton and plants at the base of the oceanic food chain, leading to their demise.
The presence of microplastics in the GPGP also contributes to their spread throughout the ocean. These tiny plastic particles can be consumed by marine organisms, leading to bioaccumulation and the potential contamination of the human food chain. As microplastics are ingested by smaller organisms, the chemicals they contain can pass up the food web, eventually reaching humans. This has led to concerns about the potential health impacts on humans as well.
The formation of plastic islands and the resulting environmental consequences highlight the urgent need to address plastic pollution in our oceans. Efforts to reduce, reuse, and recycle plastics, as well as proper waste disposal and participation in ocean clean-up initiatives, are crucial steps towards mitigating the environmental impact of plastic islands like the GPGP.
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Efforts to clean up the plastic island
The Great Pacific Garbage Patch (GPGP), located between Hawaii and California, is the largest accumulation of plastic in the open ocean. It spans waters from the West Coast of North America to Japan. The GPGP is a collection of marine debris in the North Pacific Ocean, with plastic pollution at sea densely distributed within the patch.
The Ocean Cleanup, a non-profit organisation dedicated to ridding the world's oceans of plastic, has been working to clean up the GPGP since 2013. By July 2024, they had removed 20 million kg of trash from the GPGP. The Ocean Cleanup uses advanced hotspot hunting to direct their vessels to plastic hotspots, allowing them to collect more plastic and cut costs while reducing emissions. Their floating systems are designed to capture plastics ranging from small pieces just millimetres in size to large debris, including massive discarded fishing nets.
In addition to The Ocean Cleanup, other organisations such as the Plastic Pollution Coalition and the Plastic Oceans Foundation are using social media and direct-action campaigns to support individuals, manufacturers, and businesses in transitioning from toxic, disposable plastics to biodegradable alternatives.
To address the issue of marine debris, it is crucial to not only stop more plastic from entering the ocean but also to clean up what is already there. Floating plastics trapped in the patches will continue to circulate until they break down into smaller pieces, becoming increasingly difficult to clean up and easier for marine life to mistake for food.
While many individuals and international organisations are dedicated to preventing the patch from growing, cleaning up marine debris is challenging. The National Ocean and Atmospheric Administration's Marine Debris Program estimates that it would take 67 ships one year to clean up less than one percent of the North Pacific Ocean.
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Frequently asked questions
The Great Pacific Garbage Patch (GPGP) is a garbage patch in the central North Pacific Ocean. It is the largest accumulation of plastic in the open ocean. It was discovered in 1997 by Captain Charles Moore.
The plastic island is made of plastic waste that has been broken down into smaller pieces, known as microplastics. These microplastics are often microscopic and cannot be seen by the naked eye or detected by satellite imagery. The patch is also made up of larger items such as fishing gear and shoes.
The plastic island spans an area of 1.6 million square kilometres or 617,800 square miles. It is estimated to contain 1.8 trillion pieces of plastic and is twice the size of Texas.
No, the plastic island is not slowing down. In fact, it is growing bigger. A 2021 paper predicts that the growth rate is 2.5% based on current trends. The plastic island is constantly expanding as the plastic within it breaks down into smaller pieces, making it harder to find and clean up.
