Chloe Zhang
Plastic is the most common form of marine debris, with an estimated 11 million metric tons of plastic entering the ocean each year, in addition to the 200 million metric tons already circulating in marine environments. While cleanup technologies are available, no single solution can effectively reduce ocean plastic. The key to preventing plastic from entering the ocean lies in fundamental and systemic changes, such as banning single-use plastics, improving waste management practices, and promoting recycling and proper disposal of plastics. Despite the challenges, some companies are taking innovative steps to recycle ocean plastic, such as creating products from recycled fishing nets and manufacturing clothing lines made partially from ocean plastic. These efforts provide a glimmer of hope in the fight against ocean plastic pollution.
| Characteristics | Values |
|---|---|
| Amount of plastic in the ocean | 75-199 million tons |
| Amount of plastic produced annually | 400 million tons |
| Amount of plastic entering the ocean annually | 8-11 million tons |
| Percentage of plastic recycled | 9% |
| Percentage of plastic waste not collected, improperly disposed of, or ending up as litter | 22% |
| Plastic items found in the ocean | Food wrappers, beverage bottles, grocery bags, straws, cups, plates, bottle caps, single-use bags, fishing gear, microplastics, wet wipes, cotton buds, sanitary products, microfibers |
| Impact of plastic in the ocean | Harmful to marine life, costly to fisheries, tourism, and coastal communities, can enter the food chain |
| Solutions to reduce plastic in the ocean | Ban single-use plastics, improve waste management and recycling infrastructure, reduce plastic consumption, substitute plastic with compostable materials, design products with recycling in mind, properly dispose of non-recyclable plastics, reduce waste export |
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What You'll Learn
- The plastic in our oceans is a result of littering, improper disposal, and illegal dumping
- Plastic waste enters oceans from wind, rainwater, landfills, and waterways
- Only 9% of plastic is recycled, with 22% ending up as litter or uncollected
- Marine life is affected by ingestion and entanglement in plastic debris and fishing gear
- Solutions include reducing plastic consumption, improving waste management, and recycling
The plastic in our oceans is a result of littering, improper disposal, and illegal dumping
Plastic in our oceans is a pressing environmental challenge, impacting the health of our ecosystems, marine life, the food chain, and human health. The plastic in our oceans is a result of littering, improper disposal, and illegal dumping.
Littering is a significant contributor to plastic in the oceans. Plastic waste dropped on the streets is carried by rainwater and wind into streams and rivers, eventually reaching the oceans. Even plastic litter far from the coast can be blown or washed into the sea. Plastic waste can also enter oceans through drains, which lead to the sea.
Improper disposal of plastic waste is another major factor. Plastic thrown into bins often ends up in landfills. When transported to landfills, plastic can be blown away due to its lightweight nature and can then enter rivers and the sea. Improper disposal also includes flushing plastic items down toilets, such as wet wipes, cotton buds, and sanitary products. These items, along with microfibres from washing machines, enter waterways and are too small to be filtered out by wastewater plants, ultimately ending up in the oceans and the marine food chain.
Illegal dumping of waste significantly contributes to the plastic surge in our oceans. The relentless production and disposal of plastic materials have turned our planet into a dumping ground for alarming amounts of plastic debris, including microplastics and larger items like bottles and bags. It is estimated that more than eight million metric tonnes of plastic enter the oceans annually, with projections indicating that emissions could nearly triple by 2040 without effective action.
The plastic in our oceans is thus largely a result of human activities, including littering, improper disposal, and illegal dumping. These issues must be addressed to protect our ecosystems, marine life, and human health from the damaging effects of plastic pollution.
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Plastic waste enters oceans from wind, rainwater, landfills, and waterways
Plastic waste in the ocean is a pressing issue, and it is essential to understand how plastic enters the marine environment to address this global crisis effectively. Plastic waste enters oceans through wind, rainwater, landfills, and waterways, contributing to the growing pollution crisis.
Wind
Wind plays a significant role in dispersing plastic waste over large areas, including oceans. Plastic waste is often lightweight, and when improperly disposed of, it can be blown away and carried over long distances. This wind-blown plastic has been observed in various places, from cities like Paris to remote regions of the Pyrenees mountains. The plastic waste fragments into smaller pieces, eventually becoming microplastics that can be carried by the wind and deposited into oceans and other water bodies.
Rainwater
Rainwater is another vector for plastic waste to enter oceans. Scientific analyses of rainwater samples from mountainous regions, such as the Rocky Mountains, have revealed the presence of tiny flecks and fibers of plastic. This "rain" of plastic occurs when microplastics present in the environment are carried by wind and atmospheric currents, eventually becoming part of the water cycle. These microscopic plastic particles can then be transported by rainwater into streams, rivers, and ultimately, the ocean.
Landfills
Landfills are a significant source of plastic pollution in oceans. Approximately 79% of plastic waste ends up in landfills, and the plastic deposited in these sites can be easily blown away due to its lightweight nature. The plastic waste from landfills can then make its way into nearby drains, streams, and rivers, eventually reaching the ocean. Improper waste disposal and illegal dumping of plastic waste contribute significantly to this issue.
Waterways
Waterways, including rivers and streams, are significant conduits for plastic waste to reach the oceans. During storms and heavy rain events, plastic emissions can increase significantly as trash is washed into these waterways. While not all plastic in rivers reaches the ocean, the closer a river is to the ocean, the higher the likelihood of plastic ending up in marine environments. Once in the ocean, plastic waste can persist for long periods, impacting marine life and the coastal environment.
Addressing the issue of plastic waste in the ocean requires a multifaceted approach, including improved waste management practices, reduced plastic consumption, and the development of more sustainable alternatives. By understanding the various pathways through which plastic enters the ocean, we can implement targeted solutions to mitigate this global environmental challenge.
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Only 9% of plastic is recycled, with 22% ending up as litter or uncollected
The plastic waste that ends up in the ocean is a result of littering, improper waste disposal, and plastic waste that is blown away from landfills. While only 9% of plastic is recycled, a significant portion, approximately 22%, ends up as litter or is not properly collected or disposed of. This mismanaged plastic waste eventually makes its way into oceans, causing harm to marine life and the environment.
The plastic that is disposed of in bins often ends up in landfills. When transported to these landfills, plastic, due to its lightweight nature, can be blown away and end up in drains, rivers, and eventually the sea. Improper disposal, such as illegal dumping, also contributes significantly to the plastic surge in oceans. Additionally, microfibres from daily products like wet wipes, cotton buds, and even from washing clothes, are released into waterways, consumed by small marine species, and can eventually enter our food chain.
Littering is another major contributor to the plastic waste in oceans. Plastic litter dropped on streets is carried by rainwater and wind into streams, rivers, and ultimately the sea. Once plastic waste reaches the ocean, it can take years for it to break free from coastal waters and travel to the open ocean, where it persists for extended periods. This plastic pollution has severe consequences for the coastal environment, the fishing and tourism industries, and cleanup costs for coastal communities.
While the vast majority of plastic waste in the ocean originates from land-based sources, some plastic waste comes from marine sources. Fishing equipment that is lost or dumped at sea has a high likelihood of accumulating offshore due to its distance from coastlines and its design for durability in water. This plastic waste poses a significant threat to marine life, with the mass of plastics in the Great Pacific Garbage Patch far exceeding the amount of marine life in the same region.
Addressing the issue of plastic waste in the ocean requires a comprehensive, global approach. This includes rethinking plastic chemistry, product design, recycling strategies, and consumer use. While some companies are making efforts to reduce plastic pollution and create products from recycled plastic, there is still much work to be done to increase recycling rates and decrease the amount of plastic ending up as litter or in our oceans.
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Marine life is affected by ingestion and entanglement in plastic debris and fishing gear
Large items of plastic, such as discarded fishing nets, can entangle marine mammals and fish, restricting their movement and leading to starvation, injury, and increased vulnerability to predators. This problem is especially prevalent with ghost fishing gear, which is designed to survive in the water for extended periods. Discarded fishing nets can also smother and break coral reefs, disrupting their healthy growth.
Fishing equipment that is lost or dumped at sea has a higher likelihood of accumulating offshore due to its distance from coastlines and its durability in water. Turtles, for example, often fall victim to entanglement from six-pack rings, which can get caught around their shells and necks. In addition, all seven species of sea turtles from the Atlantic and Pacific Oceans and the Mediterranean Sea have been found with traces of microplastics in their gut.
Marine megafauna, such as whales, are also highly susceptible to plastic ingestion. In 2019, a whale was discovered washed up with 40kg of plastic in its stomach, primarily consisting of plastic bags. This ingestion of plastic by wildlife was first observed in 1966, when researchers found plastic container lids and toys in dead Laysan albatross chicks.
The impact of plastic ingestion on marine life is not limited to physical entanglement and starvation. Chemicals from ingested plastics can enter the bodies of animals, potentially leading to toxic contamination. While more research is needed to understand the full extent of these health impacts, it is clear that plastic ingestion poses a significant threat to marine ecosystems.
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Solutions include reducing plastic consumption, improving waste management, and recycling
While there are efforts to clean up the plastic in the ocean, such as The Ocean Cleanup, a non-profit organization developing and deploying technologies to rid the oceans of plastic, the plastic waste in the ocean is an ongoing global crisis that requires urgent action.
Solving this crisis involves reducing plastic consumption, improving waste management, and recycling. Firstly, reducing plastic consumption can be achieved by encouraging the use of alternative plastic-free products, such as wooden pegs instead of plastic ones, or natural fabric t-shirts instead of those made from synthetic fibers. Governments are also playing a role by proposing measures to reduce plastic consumption, such as the 2021 ban on the sale of single-use plastics in Europe. Individuals can contribute by reusing plastic items, such as bottles and containers, and by properly disposing of plastic waste to prevent it from ending up in the ocean.
Improving waste management is another crucial aspect. This includes ending uncontrolled waste disposal, reducing waste generation, and increasing recycling efforts. Governments can invest in waste management facilities, provide training and job opportunities for local waste collectors, and commit to multilateral environmental agreements that promote intergovernmental and cross-sectoral cooperation. Establishing a global monitoring and reporting system can also help end plastic pollution by tracking and addressing the sources of plastic waste.
Lastly, recycling is an essential part of the solution. This involves both individual actions, such as properly recycling plastic waste, and systemic changes, such as improving recycling infrastructure and processes. By increasing the recycling of materials, we can reduce the use of new raw materials and move towards a more sustainable and circular economy.
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Frequently asked questions
Plastic is the most common form of marine debris and it never fully biodegrades. Marine life can get entangled in or ingest plastic debris, which can be fatal. It can also impact coastal environments and industries such as fishing and tourism, and it can contaminate the food chain.
Plastic enters the ocean through littering, improper disposal of trash, and illegal dumping of waste. It can be blown away from landfills or carried into waterways by rainwater and wind. Marine debris can also come from lost or abandoned fishing gear and litter dropped on the street.
While there are technologies to clean up ocean plastic, such as Ocean Cleanup's system of large floating net-like barriers, the focus should be on systemic change. This includes banning single-use plastics, improving waste management and recycling infrastructure, and reducing plastic consumption and production.
