Green Cities
Don’t Let the Plastic Get into the Ocean
May 2, 2018
Guest post by Mark J. Spalding, President, The Ocean Foundation 23 April 2018 Do you use your reusable water bottle and coffee mug? Do you use your reusable shopping bags? Do you remember to say “no straw” when ordering a drink? Good for you! You’re part of the solution. Now. Do you own a fleece vest or throw? Do you own yoga wear or other synthetic clothing items? Sorry. You’re part of the problem, too. We all know that plastic waste is a problem. It is a particular problem for the ocean. Currently approximately 8 million metric tons of plastic waste enters the ocean every year! That’s enough to line every foot of our coast. Ocean plastics can loosely be categorized in the following ways: Marine Debris—This includes everything from construction materials to beer coolers, but when we’re talking about ocean plastics, we generally mean the bigger pieces that are easily seen and can readily be picked up. Part of this is debris from marine sources such as fishing gear. Microplastics—These are the tiny pieces that plastic breaks into over time—not disintegrating, but simply fragmenting, making it ever more accessible to marine life. Microplastics are found in every part of our global ocean. Microfibers—These are the very tiny fibers from your fleece, athletic, or other synthetic clothing that shed every time you wash them in a machine. They are everywhere in the ocean as well as in lakes, rivers, streams, and even your drinking water. So, what does plastic in the ocean do? Some effects are not fully understood—such as the degree to which microfibers themselves or the toxins they carry cause harm in humans and other animals and at what scale. Others we know all too well. Plastic poisons and injures marine life as shellfish, corals, and other marine life eat microplastics and fibers as they filter for real food. Whales, fish, and other animals get entangled in derelict fishing gear and other debris and die a slow painful death from asphyxiation or starvation. When animals—sea birds and corals for example—take in plastics, it leaves no room for real food—and they suffer starvation as a result. Plastic is capable of emitting and absorbing or carrying all types of toxins, including flame-retardants and pesticides (DDT). Small pieces of plastics e.g. microplastics (microbeads, microfibers) can serve as vector for chemicals to get into the bodies of marine animals, where they can accumulate in fat cells. These can damage tissues and organ function. They can be absorbed into the brains of fish, altering behavior. Plastic is also a vector for bacteria and viruses. These properties of plastic, especially microplastics, have implications for human health as we consume fish and shellfish. Two Belgian researchers, looking at the amount of microplastics in some shellfish, concluded in 2014 that the average European seafood consumer could be eating 11,000 pieces of microplastic every year. And that’s just in shellfish (mussels in particular in this case). Plastic litters our beaches and landscapes which in turn affects tourism revenue. It’s no surprise that people like to visit clean beaches more than dirty ones. It also affects community health not only for the reasons above, but because plastic waste can collect water, allowing disease-bearing mosquitoes to breed, and poorly managed debris can clog the outflows of rivers and streams, causing flooding. So, what is it about single-use plastics? They represent somewhere between a third and a half of all global plastics production, which reached about 335 million metric tons in 2016. Some single use plastics should stay that way—especially for hypodermics and other medical uses. Others should be used only when and where they meet a unique or emergency need—think plastic straws, bottled water, bottled sodas, and plastic packaging—and that’s probably not in the EU or the US. Finland is one leader on plastics management, the European Union is doing quite well over all. The scale of use is overwhelming. We buy about 1 million plastic bottles every minute of every day! Where sanitation is a huge problem (e.g. hurricanes, floods, etc.) bottled water is a public health good and delivery in plastic is cheaper. But for daily use, it’s the more expensive choice, has a huge climate footprint, and is a big part of the plastic waste mismanagement problem. Only 1 percent of the 4 trillion plastic bags used annually is recycled. We use half a BILLION plastic straws a day in the U.S. alone—almost two for every man woman and child! So where is the plastic coming from besides littering? More than two billion people live without any waste collection. In China, Indonesia, Vietnam, Thailand and the Philippines ― which were identified in a 2015 Ocean Conservancy report as the top five plastic-polluting nations in the world ― the amount of mismanaged waste was close to 75 percent or more of the total waste generated. Getting a handle on that source at scale is a slow process because of the nature of governance in those countries and the ways in which waste disposal is managed. Landfills can leak harmful pollutants into the watershed and plastics on top of a landfill can be carried away by the wind and rainwater. Out of 50 largest uncontrolled dumpsites around the world, 38 of these are on the coast and spill directly into the sea. Thanks to sea level rise and storms, coastal landfills are eroding everywhere creating challenges for waste managers even in places where waste management has been reasonably well-addressed. The United States is one of the world’s top five waste-generating developed countries. Plastic waste to enter the ocean from land is expected to increase tenfold within 7 years. Can you even visualize 80 million metric tons? More on the Danger to fish and humans: What are the Trends? New uses for plastic are being discovered all the time—and the demand for lightweight, flexible, sterile, and inexpensive packaging and other materials grows as the population grows. Plastic production is growing exponentially and is expected to double again in 20 years. Thus, plastic waste is too.And, we’re not doing a great job of managing it. As of 2015, 6,300 million metric tons of plastic waste has been generated since the end of World War 2. Only about 9 percent of that has been recycled—the rest was burned, is sitting in landfills, or is slowly breaking into smaller pieces on land or in the water. Perhaps the most famous example of the scale of the plastic problem in the ocean is the ever-expanding “Great Pacific Garbage Patch,” a gyre in the Pacific Ocean where currents and winds have fostered the movement of plastic waste into a defined area. The Patch is a mixture of marine debris, microplastics, and ocean life including microscopic crabs hitching a ride—and now covers an area three times the size of France! And it is just one of the five ocean gyres where plastic has collected. But as famous as the Patch is, the sad truth is that plastic waste—at every scale—is found throughout the global ocean, in bays and estuaries, in the deepest crevasses, and the coastal marshes, mangrove forests, and seagrass meadows. It is everywhere. So, how do we end plastic pollution? We’re human. We’d like to engineer away the problem- like a magic pill to lose weight or live forever. What removal system is being tested? It is likely you have heard of the young Dutchman Boyan Slat and his ocean boom system. The idea is that the booms will be towed out to the Pacific from San Francisco to begin operating next July. The system involves hanging nets from booms (made, of course from plastic pipe) and using drifting anchors positioned almost 2000 feet down to tap into where the ocean currents are slower than they are at the surface. The idea is that the floating plastic debris will move faster than the booms, and thus be concentrated into a central area held by the booms. Fish and other sea life are expected to swim under the nets. Ships are to collect the gathered trash once a month to convert it to pellets or other purposes. Slat raised $2.2 million in crowdfunding from 40 countries, and millions more in California to test the prototype and begin the process of moving it thousands of miles out to sea for deployment. The challenges include the potential for “corralling” of ocean life; addressing the incredible amount of energy (and expense) to go out to collect the trash and transport it back; as well as unintended consequences. And, of course, this collects plastic of a certain size at the surface and not the debris that has sunk nor the microplastics found everywhere. Booms have proven to be one good way to capture debris in streams and rivers to prevent their migration to the sea. Prevention is key. The plastic already in the ocean is nearly impossible to collect, especially at scale, without harm to sea life. It’s very simple really: Don’t let the plastic get into the ocean. What you can do with your friends, colleagues, and family: Collectively, we are addressing many of the key problems, beginning with promoting personal action. None of what we recommend is new, and we hope repetition helps. Bad habits are hard to break—especially when it’s easier to just go with the plastic flow! The people who make the biggest difference are the ones who do the little things consistently.
- Water: If you use a reusable water bottle, you personally could avoid an average of 156 plastic bottles annually—this sounds like a small thing but it’s doing your part and multiply it by everyone in your office, home, or school, and it really starts to add up. Likewise, bring your coffee mug with you—the go-cup might be paper, but the lid is probably not.
- Carriers: Bringing your own bag to shop (and carrying one with you just in case) can help make a dent in those 4 trillion plastic bags used each year. Bag fees and bag bans do work to reduce waste—with immediate effect on cleanup statistics as to what is collected following their implementation.
- Straws: Remembering to ask for no straw can become a habit. Straws only by request is a huge first step—and a great thing to ask of your favorite restaurant. Paper and reusable straws are an option too—and the movement is slowly growing.
- Clothing: Limit how often you wash synthetic clothing, including fleece. Seek out natural fibers (bamboo, cotton, wool, etc.).
- Entertainment: Remember our roots—we can use glasses, cloth napkins, and real cutlery at events as much as we can. We can use compostable tableware, napkins, and other products (and compost them).
- Prevention: Beach, stream, and river clean ups actually help, even though they seem like a drop in the bucket. Many organizations host regular clean ups and we need everyone to pitch in and pick up in their own neighborhood.
- multiple movies, events, and other outreach seems to have drastically increased ocean plastics awareness,
- educated/mobilized citizens demand less plastic, and
- increased public awareness of the role of NGOs in working towards change, especially where NGOs are working with governments at every level in Southeast Asian countries, and
- increasing the public expectation that solutions will be implemented.
- aim to PREVENT the generation of waste
- contribute to the REUSE of waste
- REDUCE the adverse effects of waste management