Alexei Volkov
Plastic pollution is a pressing issue for islands across the world. The Great Pacific Garbage Patch, located halfway between Hawaii and California, is the largest accumulation of plastic in the open ocean, with 1.8 billion pieces of plastic that kill thousands of marine animals annually. This plastic waste also has the potential to contaminate the human food chain. Islands such as Midway, Cocos, Henderson, and Home Island are inundated with plastic waste, threatening marine life and local ecosystems. To address this issue, initiatives like Plastic Free Waters and organisations like 4ocean are working to eradicate plastic from water bodies and oceans.
| Characteristics | Values |
|---|---|
| Plastic islands | Five oceanic plastic islands |
| Plastic island size | Three times the size of France |
| Plastic island composition | 94% microplastics |
| Plastic island impact | Kills thousands of marine animals annually |
| Plastic island solution | International coalition, improved recycling, reduced single-use plastics |
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What You'll Learn
- The impact of plastic pollution on marine life and ecosystems
- The financial burden of plastic clean-up efforts
- The role of international rules and coalitions in addressing plastic waste
- The dangers of microplastics and their formation from larger plastic pieces
- The contribution of shipping and fishing industries to plastic waste in oceans
The impact of plastic pollution on marine life and ecosystems
Plastic pollution is one of the most pressing environmental issues, with oceans bearing the brunt of this crisis. Millions of tons of plastic waste enter marine environments annually, severely impacting marine life and ecosystems. This plastic waste comes from various sources, including single-use plastics like plastic bags, bottles, and packaging materials, as well as microplastics from cosmetics, toothpaste, and synthetic clothing.
Islands, such as the Midway Island in the Pacific, are particularly affected by plastic pollution. The plastic waste washes up on their shores, endangering the local wildlife and destroying the natural beauty of these islands. For example, the CNN article describes the thousands of birds' bodies rotting on Midway Island, with plastic waste found inside their rib cages and stomachs. This plastic pollution not only affects the birds but also the seals and other marine life in the surrounding waters.
Plastic pollution in the ocean has far-reaching consequences for marine ecosystems and biodiversity. It affects marine organisms both physically and chemically. Marine animals often mistake plastic debris for food, leading to internal injuries, intestinal blockages, and starvation. For example, sea turtles confuse plastic bags with jellyfish, and seabirds ingest plastic fragments, mistaking them for fish eggs. Additionally, larger plastic items can entangle marine mammals and fish, leading to injuries, vulnerability to predators, and even death.
Microplastics, which are tiny plastic particles less than 5mm in size, are also a significant concern. They are invisible to the naked eye, making it easy for marine life to consume them. Microplastics can adsorb toxins, which then transfer to the fatty tissues of the organisms that ingest them. These toxins can bioaccumulate and move up the food chain, eventually reaching humans through seafood consumption. The long-term impacts of microplastics are still being studied, but they are known to cause reproductive issues in seals and may even cause fish to prefer eating plastic over their natural food sources.
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The financial burden of plastic clean-up efforts
The impact of plastic pollution on marine life and ecosystems also contributes to the financial burden. Plastic pollution kills thousands of marine animals each year and affects the conservation efforts of small fishing communities. For example, plastic ingestion has been linked to reproductive problems in seals and can cause physical harm to animals that become stuck in old nets or entangled in plastic debris. The chemicals in plastics can also enter the food chain, with potential impacts on human health that are still unknown.
Islands, in particular, are affected by plastic pollution and face financial burdens in dealing with it. For example, the Cocos Islands, a tropical paradise in the Indian Ocean, have been inundated with plastic trash, with an estimated 414 million pieces of trash found on its white sand beaches. The Eastern Island is also littered with plastic, with the plastic-filled stomachs of dead albatrosses washing up on its shores. The clean-up efforts required to address these issues can be time-consuming and costly, and the impact on tourism and local economies can be significant.
Additionally, the prevention of plastic pollution in the first place is a financial burden that requires committed international rules and collaboration. Experts advocate for international action to ensure that plastics don't end up in the oceans, and the United Nations Law of the Sea requires coastal countries to prevent, reduce, and control land-based pollution. However, individual efforts to avoid single-use plastics are also important, and innovative solutions, such as biodegradable plastics, are being developed to address the issue.
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The role of international rules and coalitions in addressing plastic waste
Plastic waste is a pressing issue for islands, as they are particularly vulnerable to the effects of plastic pollution. Marine life, including birds and fish, ingest plastic waste, leading to their deaths and the potential contamination of the human food chain. The issue is not limited to a single island or country; plastic waste in the oceans travels far, affecting multiple regions.
To address this global crisis, international rules and coalitions have been formed to reduce plastic waste and its impact on the environment and human health. One notable example is the Basel Convention, which came into effect on January 1, 2021. Under this treaty, 187 countries agreed to restrict the international trade of plastic scrap and waste, controlling transboundary shipments for the first time. The Basel Convention categorises plastic waste into three categories: the first covers most non-hazardous plastic waste, including contaminated and mixed plastic scrap; the second includes hazardous plastic waste; and the third is for plastic waste that does not fall under the Basel Convention requirements. This treaty empowers countries to refuse plastic waste they cannot safely manage, thereby protecting their environment and populations.
In addition to the Basel Convention, other international efforts are underway to tackle plastic pollution. The Center for International Environmental Law (CIEL) is working to strengthen existing international and regional instruments, such as the Stockholm Convention on Persistent Organic Pollutants and the Strategic Approach to International Chemicals Management (SAICM). CIEL also advocated for a global plastics treaty under the United Nations Environment Assembly (UNEA), which was adopted by member states in March 2022. This treaty aims to create a legally binding instrument to end plastic pollution and is expected to be finalised by the end of 2024.
Beyond international agreements, coalitions and organisations are also playing a crucial role in addressing plastic waste. The Alliance to End Plastic Waste, for example, drives systems change by fostering collaboration and developing economically viable, environmentally beneficial, and socially responsible solutions. They work on various projects worldwide, such as improving waste management practices, incentivising waste collection, and converting plastic waste into valuable resources like construction materials. Another coalition, the Plastic Pollution Coalition, has brought together over 1,300 organisations and businesses, along with more than 14,000 individuals, to advocate for a plastic-free future and reduce single-use plastic globally.
These international rules and coalitions provide a framework for countries and organisations to work together towards the common goal of reducing plastic waste and mitigating its harmful effects on the environment and human health, especially for vulnerable regions like islands.
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The dangers of microplastics and their formation from larger plastic pieces
Microplastics are small plastic pieces less than five millimetres long, which can be harmful to our oceans and aquatic life. They are environmental pollutants that are prevalent in the oceans, remote islands, and polar regions. They are frequently detected in environmental and human samples, and humans can be exposed to them through oral intake, inhalation, and skin contact.
Microplastics can come from a variety of sources, including larger plastic pieces that have broken apart through physical, biological, and photochemical degradation, including photo-oxidation caused by sunlight exposure. This process of breaking down large plastic material into much smaller pieces is known as fragmentation. Over time, the structural integrity of plastic debris is reduced to a size that is eventually undetectable to the naked eye. Other sources of microplastics include resin pellets used for plastic manufacturing and microbeads, which are small manufactured plastic beads used in health and beauty products. These microbeads are usually washed into the sewage system and can pass through water filtration systems, ending up in the ocean and posing a threat to aquatic life.
The formation of microplastics from larger plastics is a significant issue. In the marine environment, fishing gear, such as plastic monofilament lines and nylon netting, can drift at variable depths within the oceans. These "ghost nets" can be dangerous to marine life, and microplastics from the industry have been found in different types of seafood. Additionally, recreational and commercial fishing, marine vessels, and marine industries are all sources of plastic that can directly enter the marine environment, both as macroplastics and secondary microplastics following long-term degradation.
The dangers of microplastics are evident in their impact on marine life and their potential threat to humans. Microplastics have been found to accumulate in the bodies of marine and aquatic organisms, leading to malnutrition, inflammation, reduced fertility, and mortality. They can also cause reproductive problems in seals, with larger animals showing higher concentrations of plastic. There is growing evidence that fish may prefer eating plastic to food, as demonstrated by larval perch in a Swedish study. This ingestion of plastics can contaminate the human food chain through a process called bioaccumulation, where chemicals in plastics enter the body of an animal and pass to predators as prey, eventually reaching humans.
Islands, such as Midway, are particularly affected by plastic waste, including microplastics. The Eastern Island is littered with tiny fragments of plastic, and the sand is contaminated with plastic from decaying birds. The impact of microplastics on these islands serves as a warning of the potential dangers to human health and ecosystems worldwide.
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The contribution of shipping and fishing industries to plastic waste in oceans
While it is challenging to pinpoint the sources of marine plastic pollution, the fishing industry is a significant contributor. Fishing gear, such as nets and ropes, constitutes 50-100% of plastic debris in certain ocean areas, with the North Pacific subtropical gyre being a notable example. This gyre, also known as the North Pacific Garbage Patch (NPGP) or the Great Pacific Garbage Patch, has become emblematic of the impact of plastic pollution in the ocean. Scientific reports reveal that industrialised fishing nations are largely responsible for the floating plastic pollution in this region.
The fishing industry's plastic waste dynamics are complex, and short-sighted approaches can lead to systemic failures. A holistic understanding of the various plastic waste streams is critical to tackling marine plastic pollution effectively. Fishing plastic waste has substantial environmental, health, and socioeconomic impacts, which are often overlooked. For instance, plastic waste in the NPGP has severe consequences for marine life, with animals ingesting toxic chemicals attached to the plastic.
The shipping industry also contributes to plastic waste in the oceans, albeit indirectly. Rich countries, including those in Europe and North America, export a significant amount of their plastic waste to other countries, particularly those with poor waste management systems. As a result, these exporting countries have an indirect impact on ocean pollution. While the direct contribution of traded waste from rich countries to ocean plastics is estimated to be around 5%, the true figure may be higher when considering the indirect effects of waste exportation.
Islands, such as Midway Island, are particularly vulnerable to the impacts of plastic waste. Plastic debris washes up on their shores, and the surrounding oceans become polluted with plastic, threatening marine life and the health of the island's inhabitants. The plastic waste problem is exacerbated by rising ocean levels, which may cause islands like Midway to vanish before the plastic has a chance to decay. This highlights the urgency of addressing plastic waste and improving waste management systems to prevent further environmental degradation.
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Frequently asked questions
Plastic islands are the result of waste dumping into the ocean, mostly from land and sea traffic. They are gigantic concentrations of garbage, mostly made up of microplastics.
The Great Pacific Garbage Patch is the largest accumulation of plastic in the open ocean. It is located between California and Hawaii and is three times the size of France.
Plastic waste is killing thousands of marine animals every year. It is also entering the marine food web, which means it has the potential to contaminate the human food chain.
Various initiatives are being undertaken to address the issue of plastic waste on islands, such as the Plastic Free Waters initiative, which aims to eradicate plastic from water bodies in the region. There are also individuals like Alex Schulz and Andrew Cooper, who are making efforts to remove plastic from the oceans and coastlines.
To prevent the growth of plastic islands, it is important to eliminate unnecessary single-use plastic, partake in ocean clean-ups, and ensure that fishing equipment is not dumped into the ocean. International rules and coalitions are also necessary to address this global issue effectively.
