Bronte Wells
Ocean pollution has been around for centuries, with the earliest recorded instance of ocean pollution dating back to ancient times when the Greeks and Romans dumped waste and sewage into the Mediterranean Sea. However, it was during the Industrial Revolution in the 18th and 19th centuries that ocean pollution reached alarming levels, as industrial waste poured into nearby waterways and eventually made its way into the ocean. Today, plastic pollution is one of the most pressing environmental issues, with an estimated 8 million tons of plastic waste entering the ocean each year. This waste has devastating effects on marine life, killing animals through ingestion and entanglement. While there have been legislative attempts to de-pollute the ocean and raise awareness about the issue, the amount of plastic waste continues to increase, posing a constant threat to the health of our oceans.
| Characteristics | Values |
|---|---|
| Earliest recorded instance of ocean pollution | Greeks and Romans dumping waste and sewage into the Mediterranean Sea |
| Ocean pollution began to reach alarming levels | 18th and 19th centuries (Industrial Revolution) |
| Year plastic was first created | 1862 |
| Year plastic pollution was first noticed by scientists | Late 1960s and early 1970s |
| Year plastic pollution was first reported | 1960s |
| Amount of plastic waste dumped into the ocean per year | 8 million tons |
| Amount of plastic waste currently in the oceans | 75 to 199 million tons |
| Amount of plastic waste entering the marine environment each year | 33 billion pounds |
| Year plastic pollution concerns shifted from oil spills to plastic waste | 1980s |
| Year plastic pollution was found in the organs of aquatic species | By 2018 |
| Year the US banned ocean dumping of plastics | 1988 |
| Year with the highest recorded amount of plastic waste generation | Early 2000s |
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What You'll Learn
The ocean as a dumping ground
The ocean has long been viewed as a vast, seemingly limitless expanse of water. However, the reality is that the ocean is under constant threat from pollution caused by human activity. The earliest recorded instance of ocean pollution dates back to ancient times, when the Greeks and Romans would dump waste and sewage into the Mediterranean Sea. But it was with the Industrial Revolution in the 18th and 19th centuries that ocean pollution began to reach alarming levels. With the advent of factories and mass production, industrial waste poured into nearby waterways, ultimately making its way into the ocean.
In the past, boaters and shipping fleets have been the main cause of plastics in the ocean, with more than 85% of plastic waste in the ocean coming from the world's merchant shipping fleet. Since 1988, it has been illegal for ships to dump plastics into the ocean, but this law is difficult to enforce and does not account for driftnets and other fishing gear.
Another major source of ocean plastic pollution is mismanaged waste from households, industry, and agriculture, which can reach the ocean via littering, wind, landfills, or overflowing garbage bins. Rivers are a dominant pathway for plastics to reach the ocean, with plastic debris entering any part of a watershed and making its way into the sea.
The effects of plastic pollution on marine life are devastating. Marine animals often mistake plastic for food and ingest it, which can lead to suffocation, starvation, and other serious health problems. Plastic entanglement has also been observed to kill tens of thousands of seals annually, contributing to a decline in seal populations.
In recent years, there has been a growing movement towards sustainable practices and recycling to reduce plastic waste and protect the ocean and its inhabitants. Citizens have also become more engaged in the issue, with record numbers participating in beach clean-up campaigns. Governments have also implemented stricter regulations and standards for industrial and shipping practices, and there have been legislative attempts to de-pollute the ocean. Despite these efforts, plastic pollution remains a pressing environmental issue, with millions of tons of plastic waste continuing to enter the ocean each year.
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Ancient ocean pollution
Ocean pollution has been a problem since ancient times, with the earliest recorded instance of ocean pollution dating back to when the Greeks and Romans dumped waste and sewage into the Mediterranean Sea. However, the scale of the problem has increased dramatically in modern times, with the ocean now facing constant threats from pollution caused by human activity.
In the past, before the advent of plastics, the amount of waste in the ocean was relatively small as people did not dispose of their waste in the same way they do today. Instead, waterways were often used as a means of waste disposal, or rubbish would be burned, resulting in pollution in the ocean and atmosphere. It is likely that ocean dumping was occurring before it was investigated in the 1960s, as scientists had not researched this issue prior to this decade. During this time, scientists from the National Academy of Sciences discovered that more than 100 million tonnes of waste had been dumped into the ocean, mainly consisting of chemical, industrial, and sewage waste rather than plastic pollution.
The Industrial Revolution in the 18th and 19th centuries marked a significant turning point, as ocean pollution began to reach alarming levels. The establishment of factories and mass production of goods led to industrial waste pouring into nearby waterways, eventually making its way into the ocean. Plastic pollution, in particular, has become one of the most pressing environmental issues of our time. With the development of man-made plastic in 1862 and the surge of plastic innovations around World War II, plastic waste has been increasingly dumped into the ocean, causing severe threats to marine life, human health, and the planet.
Today, billions of pounds of plastic and other pollutants enter the ocean each year, impacting marine ecosystems and wildlife. Plastic debris is pervasive in the ocean, with every square mile of surface ocean affected. Marine animals, such as sea turtles, often mistake plastic for food, leading to internal injuries, starvation, and death. The problem is expected to worsen, with predictions that plastic will outweigh all the fish in the sea by 2050.
While there have been legislative attempts to address ocean pollution, such as the Marine Protection, Research and Sanctuaries Act passed by the U.S. Congress, the ongoing production and reliance on plastic continue to fuel the crisis. It is crucial to reduce plastic pollution, implement stricter regulations, and transition towards sustainable practices to protect the ocean and mitigate the devastating effects of pollution on our planet.
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Industrial Revolution pollution
Ocean pollution has been an issue since ancient times, with the Greeks and Romans dumping waste and sewage into the Mediterranean Sea. However, it was during the Industrial Revolution in the 18th and 19th centuries that ocean pollution reached unprecedented and alarming levels. The advent of factories and mass production meant that industrial waste began to pour into nearby waterways, which ultimately flowed into the ocean.
The Industrial Revolution marked a shift to manufacturing-based economies, powered by heavy industrial machinery that improved efficiency and output. Steam power, for instance, enabled semi-automated factory systems that could mass-produce goods. This industrialization advanced societies in crucial ways, leading to rapid economic growth and improved transportation systems, working conditions, and living standards.
However, these advancements came at a cost. The Industrial Revolution was the catalyst for our intensive use of fossil fuels, which has become the driving force behind climate change. The reliance on fossil fuels, such as coal, led to a sharp increase in carbon emissions and harmful environmental pollution. Over the entire industrial era, approximately 2.3 trillion tonnes of carbon dioxide were released into the atmosphere. As a result, atmospheric carbon dioxide concentrations have soared, contributing to rising global temperatures and extreme weather events.
The environmental impact of the Industrial Revolution extended beyond carbon emissions. The rapid industrialization and urbanization put immense strain on natural resources, leading to environmental degradation, deforestation, water pollution, and overcrowding in cities. Industrialization also introduced industrial wastewater, which contains heavy metals, organic compounds, and toxic chemicals. When not treated properly, this wastewater pollutes marine environments and disturbs marine life.
The industrialization of the oceans has mirrored the early stages of activities that triggered mass extinctions on land. The same patterns of human activity, such as overfishing and pollution, are now threatening marine ecosystems and wildlife. The industrialization of fishing and the intensive use of plastics have further contributed to the degradation of ocean health and the endangerment of marine species.
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Plastic pollution
Plastic waste makes up 80% of all marine pollution, with an estimated 8 to 10 million metric tons of plastic entering the ocean each year. This plastic waste forms garbage patches, with the most polluted and well-studied being the Great Pacific Garbage Patch, located in the North Pacific Ocean between Hawaii and California. This garbage patch is estimated to be twice the size of Texas and contains around 100 million kilograms of plastic, with 1.8 trillion pieces larger than 0.5mm.
The presence of plastic in the ocean has devastating consequences for marine life and ecosystems. Marine animals can become entangled in plastic debris, leading to injury and death, and plastic ingestion can cause intestinal injury and death, as well as reducing the storage volume of the stomach, leading to starvation. Research indicates that half of sea turtles worldwide have ingested plastic, and it is estimated that 60% of all seabird species have eaten plastic, with this number predicted to increase to 99% by 2050. Plastic pollution also affects marine food chains, with fish in the North Pacific ingesting 12,000 to 24,000 tons of plastic each year, which can then be transferred up the food chain to bigger fish, marine mammals, and human seafood eaters.
Microplastics, tiny particles of plastic that do not fully degrade, have been found throughout the water column and in every corner of the globe, from Mount Everest to the Mariana Trench. These microplastics have been found in drinking water, salt, beer, and soil, and can be eaten by marine animals, entering their bodies and tissues and leading to disastrous consequences for the health of the planet and its inhabitants. While mechanical systems can be effective at picking up large pieces of plastic, microplastics are virtually impossible to recover once they have drifted throughout the water column in the open ocean.
Efforts are being made to address the plastic crisis, with 175 countries adopting a resolution to "End plastic pollution: towards an International legally binding instrument" at the UN Environment Assembly in 2022. Local and global organizations, companies, and initiatives are working to clean up existing plastic pollution and prevent further pollution from entering the oceans.
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Mitigating plastic pollution
The ocean has long been viewed as a dumping ground for plastic, sewage, industrial and chemical waste. The history of ocean pollution dates back to ancient times, with the Greeks and Romans dumping waste and sewage into the Mediterranean Sea. However, it was during the Industrial Revolution in the 18th and 19th centuries that ocean pollution reached alarming levels, with industrial waste pouring into nearby waterways and, eventually, the ocean. Today, plastic pollution has become one of the most pressing environmental issues, with an estimated 8 million tons of plastic waste entering the ocean annually.
Plastic pollution is a significant issue that requires large-scale human action to address. Here are some strategies to mitigate plastic pollution:
Policy Interventions and Legislative Actions:
- Governments have a crucial role in implementing and enforcing policies to reduce plastic pollution. For example, Canada has aimed to ban single-use plastics, and Peru has banned single-use plastics in protected areas.
- Taxation on plastic products can be implemented to decrease their consumption. However, it is important to note that neoclassical economic theory, which assumes a direct relationship between price and demand, may oversimplify human behaviour.
- Behavioural theory suggests that policy interventions should consider behavioural costs and benefits, such as time, effort, and convenience, to effectively motivate mitigation actions.
- Developing countries, such as Bangladesh, have also taken legislative action. The 1995 Bangladesh Environmental Conservation Act allowed the government to restrict the manufacture and sale of plastic bags.
Sustainable Practices and Waste Management:
- Individuals can contribute by properly disposing of trash, recycling, and supporting organizations dedicated to ocean protection.
- The development of natural substitutes for plastics, such as paper, cloth, or materials derived from banana leaves, offers a promising solution.
- Initiatives like the Sustainable Manufacturing and Environmental Pollution (SMEP) program focus on manufacturing processing changes to reduce plastic waste.
- Proper waste management is essential, as mismanaged waste from households, industry, and agriculture contributes significantly to plastic pollution in oceans.
Reducing Plastic Consumption:
- Single-use plastics are major contributors to marine litter. Encouraging the use of reusable alternatives can significantly reduce plastic pollution.
- The Society of the Plastics Industry developed the plastic resin identification code in the 1980s to facilitate easier recycling and disposal of plastics.
Addressing plastic pollution requires collective efforts from individuals, industries, governments, and organizations. By implementing policies, adopting sustainable practices, and reducing plastic consumption, we can work towards mitigating plastic pollution and protecting our oceans.
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Frequently asked questions
Ocean pollution has been around since ancient times, with the Greeks and Romans dumping waste and sewage into the Mediterranean Sea. However, it wasn't until the Industrial Revolution in the 18th and 19th centuries that ocean pollution reached alarming levels, with industrial waste pouring into nearby waterways and, ultimately, the ocean.
The main sources of ocean pollution are land-based and oceanic activities. Land-based sources include mismanaged waste from households, industry, and agriculture, which can enter the ocean via littering, wind, natural disasters, and sewage overflows. Oceanic sources include fishing, boating, and shipping, such as cargo-associated wastes and the gradual breakdown of rope and polymer-based paints.
Ocean pollution has devastating effects on marine life. Plastic pollution can kill marine mammals through entanglement in fishing gear and other plastic debris. It can also kill marine animals through ingestion, as they mistake plastic for food. In addition, plastic can concentrate pollutants up to a million times their level in seawater and deliver them to the species that ingest them.
