Formation | 2013 |
---|---|
Founded at | Delft, Netherlands |
Type | Stichting |
Purpose | Cleaning the oceans |
Headquarters | Rotterdam, Netherlands |
Coordinates | 51°55′15″N4°28′06″E / 51.92083°N 4.46833°E |
Boyan Slat | |
Budget (2022) | € 54.705 million [1] |
Staff | 120 [2] |
Website | www |
The Ocean Cleanup is a nonprofit environmental engineering organization based in the Netherlands that develops technology to extract plastic pollution from the oceans and to capture it in rivers before it can reach the ocean. Their initial focus was on the Pacific Ocean and its garbage patch, and extended to rivers in countries including Indonesia, Guatemala, and the United States.
The Ocean Cleanup was founded in 2013 by Boyan Slat, a Dutch inventor [3] [4] [5] who serves as its CEO. It develops both ocean and river based catch systems. Its ocean system consists of a funnel shaped floating barrier which is towed by two ships. The ocean system is deployed in oceanic gyres to collect marine debris. [6] The project aims to launch 10 or more approximately 2 km-long (1.2 mi) systems which they predict could remove 50% of the debris in the Great Pacific Garbage Patch five years from deployment. [7] [8]
The river system consists of a variety of floating barriers which are anchored to the riverbank. The Ocean Cleanup also publishes scientific papers, [9] [10] [11] [12] and estimates that "1% of worlds rivers (~1000 rivers) are responsible for 80% of the pollution in the world's seas". [13] [14] [15] They aim to deploy their river systems in these 1000 rivers.
As of August 2023, the organization has removed more than 15.8 million kilograms of trash from rivers and the Great Pacific Garbage Patch. [16]
Slat proposed the cleanup project and supporting system in 2012. In October, he outlined the project in a TED-talk. The initial design consisted of long, floating barriers fixed to the seabed, attached to a central platform shaped like a manta ray for stability. The barriers would direct the floating plastic to the central platform, which would remove the plastic from the water. Slat did not specify the dimensions of this system in the talk. [17]
In 2014, the design replaced the central platform with a tower detached from the floating barriers. This platform would collect the plastic using a conveyor belt. The floating barrier was proposed to be 100 km (62 mi) long. They conducted and published a feasibility study. [18]
In 2015, this design won the London Design Museum Design of the Year, [19] [20] and the INDEX: Award. [21] [22] Later that year, scale model tests were conducted [23] in wave pools at Deltares and MARIN, testing the dynamics and load of the barrier in ocean conditions, and gathering data for computational modeling. [24]
A 100-metre (330 ft) segment went through a test in the North Sea in the summer of 2016. [23] [25] The test indicated that conventional oil containment booms would not stand up over time, and they changed the floater material to a hard-walled HDPE pipe. [26]
In May 2017, significant changes to the conceptual design were made: [25]
External videos | |
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The ocean plastic cleanup of Boyan Slat – a 2018 documentary of the organization, operational detail of System 001, and excerpt footage of the early life of the founder (VPRO, full episode) |
Tests in 2018 [31] led to sea anchors being removed, and the opening of the U turned to face the direction of travel, by creating more drag in the middle with a deeper underwater screen. [32] [33]
On 9 September 2018, System 001 (nicknamed Wilson in reference to the floating volleyball in the 2000 film Cast Away) [34] [7] deployed from San Francisco. The ship Maersk Launcher towed the system to a position 240 nautical miles off the coast, where it was put through a series of sea trials. [35] It consisted of a 600 m (2,000 ft) long barrier with a 3 m (9.8 ft) wide skirt hanging beneath it.[ citation needed ] It was made from HDPE, and consists of 50x12 m sections joined. [36] It was unmanned and incorporated solar-powered monitoring and navigation systems, including GPS, cameras, lanterns and AIS. [37] The barrier and the screen were produced by an Austrian supplier. [38]
In October 2018 it was towed to the Great Pacific Garbage Patch for real-world duty. [39] System 001 encountered difficulties retaining the plastic collected. [40] The system collected debris, but soon lost it because the barrier did not retain a consistent speed through the water. [41] In December, mechanical stress caused an 18-meter section to detach, and the rig was moved to Hawaii for inspection and repair. During the two months of operation, it had captured 2 metric tons of plastic. [42] [43] [44]
In June 2019, after four months of root cause analyses and redesign, [45] [46] System 001/B was deployed, [47] [48] with a water-borne parachute to slow the system, and an extended cork line to hold the screen in place. [49] [50] This successfully captured smaller plastic, [50] reduced the barrier size by two-thirds, and was easier to adjust offshore. [51] [52] [53] However, System 001/B still did not adequately capture and retain debris.
In October 2019, The Ocean Cleanup unveiled a floating barrier for river cleanup, The Interceptor, to intercept river plastic and prevent it from reaching the ocean. [54] Two systems were deployed in Jakarta (Indonesia) and Klang (Malaysia). [55]
In January 2020, flooding broke the barrier of Interceptor 001 in Jakarta. It was replaced with a newer model with a stronger screen, simpler design, and an adjustable better-defined weak link. [56] [57] A third Interceptor was deployed in Santo Domingo, in the Dominican Republic. [58] In December, The Ocean Cleanup announced they would start large-scale production of the Interceptor series. [59]
In July 2022, an Interceptor Original was deployed near the mouth of Ballona Creek in southwestern Los Angeles County, California. This was the first Interceptor Original installed in the United States, and the second of its kind to be deployed globally. [16]
In May 2022, the Ocean Cleanup trialed a new Interceptor called Trashfence on the Rio Las Vacas, a tributaty of the Rio Motagua, in Guatemala. It was anchored to the riverbed, and the anchors washed out. [60] In April 2023, they returned with a pair of new Interceptors, at a point on the river with slower current, anchored to the riverbank. This was successful, and soon became their most prolific site; by June 13, they had already removed 850 tons of plastic from the river. [61]
In July 2021, a new design called System 002, also known as "Jenny", was deployed in the Great Pacific Garbage Patch for testing. [62] System 002 was actively towed by two ships as opposed to System 001 which passively drifted. In October, the organization announced that the system had gathered 28,000 kilograms (62,000 lb) of trash. In October, the project announced plans for System 03, which would span up to 2.5 km (1.6 mi). [63]
By December, the project announced it had removed more than 150 tonnes of plastic from the Great Pacific Garbage Patch [65] and announced it would transition to the new longer System 03 the following year. [66]
In May 2023, the project deployed its System 03 barrier, 1,750 meters long. The system included a retention zone where material is held before it is removed from the water, with the nets' mesh size there being increased from 10 to 50 mm. This is to allow marine life such as fish and turtles to escape, and to allow smaller creatures such as blue buttons and violet snails to pass through. [67]
System 03 has about 5x the capacity of System 002, which is why they dropped a 0 from the naming scheme:
[O]ur modeling suggests it may be possible to clean the entire GPGP with as few as 10 systems. That’s why we knocked off one of the zeroes from ‘002’ when we named ‘03’ – we no longer need a three-figure amount of systems to clean all five ocean garbage patches around the world. [68]
In April 2024, the project claimed that it had removed 10 million kilograms (22 million lb) of marine trash from the Great Pacific Garbage Patch and from key polluting rivers around the world since 2019. [69]
The latest 03 design uses a towed floating structure. The structure acts as a containment boom. A permeable screen underneath the float catches subsurface debris and funnels it into the Retention Zone which serves as a debris catch. [62] The Retention Zone is monitored by underwater cameras. If an animal is spotted in the Retention Zone, the Marine Animal Safety Hatch (MASH) is activated, blocking off any further entrance into the Retention Zone while opening an exit hatch and giving the animal a clear route out.
Crewed boats tow the approximately 2km U-shaped barrier through the water at 1.5 knots. The ship is steered to areas with higher waste densities. [62] In July 2022, the floating system reached the milestone of 100,000 kg of plastic removed from the Great Pacific Garbage Patch. [70]
The Interceptor is a solar-powered, automated system designed to capture and extract waste. Along with an optimized water flow path, a barrier guides rubbish towards the opening of the Interceptor and onto the conveyor belt, which delivers waste to the shuttle. The shuttle deposits the waste equally into one of six bins according to sensors. When the bins are almost full, local operators are informed with an automated message. They then empty them and send the waste to local waste management facilities. The Interceptor project is similar to a smaller-scale local project called Mr. Trash Wheel developed in 2008 for Maryland's Baltimore harbor.
In 2021, The Ocean Cleanup began expanding their Interceptor systems to be able to tackle a wider range of rivers. [71] [72] The Interceptor Barricade developed for Rio Las Vacas in 2023 was the first model designed for very high-throughput rivers that may carry 10,000 kg of trash a day.
Unit | Type | Ocean | Location | Deployed | Status |
---|---|---|---|---|---|
001 | System 001 | Pacific Ocean | Great Pacific Garbage Patch | 2018 | Concluded |
002 | System 002 | Pacific Ocean | Great Pacific Garbage Patch | 2021 | Concluded |
03 | System 03 | Pacific Ocean | Great Pacific Garbage Patch | 2023 | Deployed |
Unit | Type | River | Location | Deployed | Status |
---|---|---|---|---|---|
001 | Interceptor Original 1st Gen | Cengkareng Drain | Jakarta, Indonesia | 2019 | Deployed |
002 | Interceptor Original 2nd Gen | Klang | Selangor, Malaysia | 2019 | Deployed |
003 | Interceptor Original 2nd Gen | Can Tho | Can Tho, Vietnam | 2021 | Deployed |
004 | Interceptor Original 2nd Gen | Rio Ozama | Santo Domingo, Dominican Republic | 2020 | Deployed |
005 | Interceptor Original 3rd Gen | Klang | Selangor, Malaysia | 2021 | Deployed |
006 | Interceptor Barricade | Las Vacas | Guatemala City, Guatemala | 2023 | Deployed |
007 | Interceptor Original 3rd Gen | Ballona Creek | Los Angeles County, California, United States | 2022 | Deployed |
008 | Interceptor Barrier + Tender | Kingston Harbour (Kingston Pen Gully) | Kingston, Jamaica | 2021 | Deployed |
009 | Interceptor Barrier + Tender | Kingston Harbour (Barnes Gully) | Kingston, Jamaica | 2021 | Deployed |
010 | Interceptor Barrier + Tender | Kingston Harbour (Rae Town Gully) | Kingston, Jamaica | 2021 | Deployed |
011 | Interceptor Barrier + Tender | Kingston Harbour (Tivoli Gully) | Kingston, Jamaica | 2022 | Deployed |
012 | Interceptor Guard | Kingston Harbour (D'Aguilar Gully) | Kingston, Jamaica | 2023 | Deployed |
013 | Interceptor Barrier + Tender, Interceptor Guard | Kingston Harbour (Mountain View Gully) | Kingston, Jamaica | 2023 | Deployed |
014 | Interceptor Guard | Kingston Harbour (Shoemaker Gully) | Kingston, Jamaica | 2023 | Deployed |
019 | Interceptor Original 3rd Gen | Chao Phraya | Bangkok, Thailand | 2024 | Deployed |
020 | Interceptor Original 3rd Gen | Cisadane | Tangerang Regency, Indonesia | ? | Planned |
021 | Interceptor Barricade | Motagua | El Quetzalito, Guatemala | ? | Planned |
In August 2015, The Ocean Cleanup conducted the Mega Expedition, in which a fleet of approximately 30 vessels, with lead ship R/V Ocean Starr, crossed the Great Pacific Garbage Patch and mapped an area of 3.5 million square kilometers. The expedition collected data on the size, concentration and total mass of the plastic in the patch. According to the organization, this expedition collected more data on oceanic plastic pollution than the last 40 years combined. [78] [79]
In September and October 2016, The Ocean Cleanup launched the Aerial Expedition, in which a C-130 Hercules aircraft conducted the first ever series of aerial surveys to map the Great Pacific Garbage Patch. The goal was specifically to quantify the amount of large debris, including ghost nets in the patch. [80] Slat stated that the crew saw more debris than expected. [81]
The project released an app called The Ocean Cleanup Survey App, which enables others to survey the ocean for plastic, and report their observations. [82]
In February 2015, the research team published a study in Biogeosciences about the vertical distribution of plastic, based on samples collected in the North Atlantic Gyre. They found that plastic concentration decreases exponentially with depth, with the highest concentration at the surface, and approaching zero just a few meters deeper. [33] [83] A follow-up paper was published in Scientific Reports in October 2016. [84]
In June 2017, researchers published a paper in Nature Communications , with a model of the river plastic input into the ocean. Their model estimates that between 1.15 and 2.41 million metric tons of plastic enter the world's oceans every year, with 86% of the input stemming from rivers in Asia. [85] [86] In December 2017, they published a paper in Environmental Science & Technology about pollutants in oceanic plastic they had sampled. [87]
In March 2018, they published a paper in Scientific Reports, summarizing the combined findings from the two expeditions. They estimated that the Patch contains 1.8 trillion pieces of floating plastic, with a total mass of 79,000 metric tons. Microplastics (< 0.5 cm) make up 94% of the pieces, accounting for 8% of the mass. The study suggests that the amount of plastic in the patch increased exponentially since 1970. [88]
In September 2019, they published a paper in Scientific Reports studying why emissions into the ocean are higher than the estimates of debris accumulated at the surface layer of the ocean. They argue that debris circulation dynamics offer an explanation for this missing plastic and suggest that there is a significant amount of time between initial emissions and accumulation offshore. The study also indicated that current microplastics are mostly a result of the degradations of plastic produced in the 1990s or before. [89] A follow-up study in May 2020 showed that part of the plastic at the surface of the Great Pacific Garbage Patch is breaking down into microplastics and sinking to the deep sea. Most debris is still found at the surface, with 90% in the first 5 meters. [90]
In October 2019, other researchers estimated that most ocean plastic pollution comes from cargo ships, with a majority from Chinese cargo ships alone. [91] A spokesperson from The Ocean Cleanup said: "Everyone talks about saving the oceans by stopping using plastic bags, straws and single use packaging. That's important, but when we head out on the ocean, that's not necessarily what we find." [92]
The Ocean Cleanup raised over US$2 million with the help of a crowdfunding campaign in 2014. [93]
As of 2019, it was mainly funded by donations and in-kind sponsors, including Maersk, Salesforce.com chief executive Marc Benioff, Peter Thiel, Julius Baer Foundation, The Coca-Cola Company and Royal DSM. [94] [95]
In 2019, it received a 10 million AUD award from the Macquarie Group Foundation as part of its 50th anniversary celebration. [96]
In October 2020, they unveiled a product made from plastic certified from the Great Pacific Garbage Patch, The Ocean Cleanup sunglasses, to help fund the continuation of the cleanup. [97] They made 21,000 sunglasses, sold at €200 apiece. They worked with DNV GL to develop a certification for plastic from water sources and the sunglasses were certified to originate from the GPGP. [97] [98] The sunglasses were designed by Yves Béhar and manufactured by Safilo. They sold out in early 2022. [99]
In October 2021, they were part of the #TeamSeas fundraising campaign led by YouTube stars Mark Rober and MrBeast, and received roughly half of the $30 million raised.
In 2022, Kia signed a seven-year deal to become a global partner of The Ocean Cleanup through funding and in-kind contributions. The partnership will fund the construction of a new Interceptor and will allow for recycled plastics to be used in the manufacturing process of Kia. [100]
In early 2023 the organization received its largest private donation to date of $25 million from Joe Gebbia, co-founder of Airbnb. [101]
Criticisms and doubts about method, feasibility, efficiency and return on investment have been raised in the scientific community. Miriam Goldstein, director of ocean policy at the Center for American Progress, stated in 2019 that compared to the ocean system, devices closer to shore are easier to maintain, and would likely recover more plastic per dollar spent overall. [102]
The team has expressed their own concerns that the devices could imperil sea life, [103] including neustons, communities of pleustons, Portuguese man-of-war, sea snails, and sail jellyfish that live near the ocean surface, [104] and have monitored for such impacts. A modelling study concluded that it is currently impossible to determine how damaging at-sea plastic removal strategies (such as those of The Ocean Cleanup) would be for marine life, with impacts potentially ranging from mild to severe. [105]
It is understood that this approach cannot solve the whole problem. [5] [106] Plastic in the oceans is spread far beyond the gyres; experts estimate that less than 5% of all the plastic pollution which enters the oceans makes its way into any of the garbage patches. [5] : 1 Much of the plastic that does make it to gyres is not floating at the surface, [103] though recent research confirms it is mostly within the first meters. Plastic in rivers can be more easily trapped at the source but that accounts for only a part of all plastic in the oceans.
In 2022, it collected 923 000 kg of ocean and river plastic with the expenses of €45.603 million; a cost of €49.4/kg. [1]
In 2023 the efficacy has significantly improved due to the upscaling of the river systems. A total of 8531 metric tons of ocean and river plastic was collected with the expense of €44.507 million; a cost of €5.22/kg. [107]
The project and its founder have been recognized in many fora.
Marine debris, also known as marine litter, is human-created solid material that has deliberately or accidentally been released in seas or the ocean. Floating oceanic debris tends to accumulate at the center of gyres and on coastlines, frequently washing aground, when it is known as beach litter or tidewrack. Deliberate disposal of wastes at sea is called ocean dumping. Naturally occurring debris, such as driftwood and drift seeds, are also present. With the increasing use of plastic, human influence has become an issue as many types of (petrochemical) plastics do not biodegrade quickly, as would natural or organic materials. The largest single type of plastic pollution (~10%) and majority of large plastic in the oceans is discarded and lost nets from the fishing industry. Waterborne plastic poses a serious threat to fish, seabirds, marine reptiles, and marine mammals, as well as to boats and coasts.
The North Atlantic Gyre of the Atlantic Ocean is one of five great oceanic gyres. It is a circular ocean current, with offshoot eddies and sub-gyres, across the North Atlantic from the Intertropical Convergence Zone to the part south of Iceland, and from the east coasts of North America to the west coasts of Europe and Africa.
Marine pollution occurs when substances used or spread by humans, such as industrial, agricultural and residential waste, particles, noise, excess carbon dioxide or invasive organisms enter the ocean and cause harmful effects there. The majority of this waste (80%) comes from land-based activity, although marine transportation significantly contributes as well. It is a combination of chemicals and trash, most of which comes from land sources and is washed or blown into the ocean. This pollution results in damage to the environment, to the health of all organisms, and to economic structures worldwide. Since most inputs come from land, either via the rivers, sewage or the atmosphere, it means that continental shelves are more vulnerable to pollution. Air pollution is also a contributing factor by carrying off iron, carbonic acid, nitrogen, silicon, sulfur, pesticides or dust particles into the ocean. The pollution often comes from nonpoint sources such as agricultural runoff, wind-blown debris, and dust. These nonpoint sources are largely due to runoff that enters the ocean through rivers, but wind-blown debris and dust can also play a role, as these pollutants can settle into waterways and oceans. Pathways of pollution include direct discharge, land runoff, ship pollution, bilge pollution, atmospheric pollution and, potentially, deep sea mining.
Ghost nets are fishing nets that have been abandoned, lost, or otherwise discarded in the ocean, lakes, and rivers. These nets, often nearly invisible in the dim light, can be left tangled on a rocky reef or drifting in the open sea. They can entangle fish, dolphins, sea turtles, sharks, dugongs, crocodiles, seabirds, crabs, and other creatures, including the occasional human diver. Acting as designed, the nets restrict movement, causing starvation, laceration and infection, and suffocation in those that need to return to the surface to breathe. It's estimated that around 48 million tons of lost fishing gear is generated each year, not including those that were abandoned or discarded and these may linger in the oceans for a considerable time before breaking-up.
The North Pacific Gyre (NPG) or North Pacific Subtropical Gyre (NPSG), located in the northern Pacific Ocean, is one of the five major oceanic gyres. This gyre covers most of the northern Pacific Ocean. It is the largest ecosystem on Earth, located between the equator and 50° N latitude, and comprising 20 million square kilometers. The gyre has a clockwise circular pattern and is formed by four prevailing ocean currents: the North Pacific Current to the north, the California Current to the east, the North Equatorial Current to the south, and the Kuroshio Current to the west. It is the site of an unusually intense collection of human-created marine debris, known as the Great Pacific Garbage Patch.
The Great Pacific garbage patch is a garbage patch, a gyre of marine debris particles, in the central North Pacific Ocean. It is located roughly from 135°W to 155°W and 35°N to 42°N. The collection of plastic and floating trash originates from the Pacific Rim, including countries in Asia, North America, and South America.
Plastic pellet pollution is a type of marine debris originating from the plastic particles that are universally used to manufacture large-scale plastics. In the context of plastic pollution, these pre-production plastic pellets are commonly known as 'nurdles'. These microplastics are created separately from the user plastics they are melted down to form, pellets. Loss can occur during both the manufacturing and transport stages. When released into the open environment, they create persistent pollution both in the oceans and on beaches. About 230,000 tonnes of nurdles are thought to be deposited in the oceans each year, where they are often mistaken for food by seabirds, fish and other wildlife. Due to their small size, they are notoriously difficult to clear up from beaches and elsewhere.
A garbage patch is a gyre of marine debris particles caused by the effects of ocean currents and increasing plastic pollution by human populations. These human-caused collections of plastic and other debris are responsible for ecosystem and environmental problems that affect marine life, contaminate oceans with toxic chemicals, and contribute to greenhouse gas emissions. Once waterborne, marine debris becomes mobile. Flotsam can be blown by the wind, or follow the flow of ocean currents, often ending up in the middle of oceanic gyres where currents are weakest.
Marine plastic pollution is a type of marine pollution by plastics, ranging in size from large original material such as bottles and bags, down to microplastics formed from the fragmentation of plastic material. Marine debris is mainly discarded human rubbish which floats on, or is suspended in the ocean. Eighty percent of marine debris is plastic. Microplastics and nanoplastics result from the breakdown or photodegradation of plastic waste in surface waters, rivers or oceans. Recently, scientists have uncovered nanoplastics in heavy snow, more specifically about 3,000 tons that cover Switzerland yearly.
Charles J. Moore is an oceanographer and boat captain known for articles that recently brought attention to the 'Great Pacific Garbage Patch', an area of the Pacific Ocean strewn with floating plastic debris caught in a gyre.
A manta trawl is a net system for sampling the surface of the ocean. It resembles a manta ray, with metal wings and a broad mouth. The net it pulls is made of thin mesh, and the whole trawl is towed behind a scientific research vessel. The manta trawl is useful for collecting samples from the surface of the ocean, such as sampling the plastic pieces making up the great Pacific garbage patch as well as the associated plankton.
Project Kaisei is a scientific and commercial mission to study and clean up the Great Pacific Garbage Patch, a large body of floating plastic and marine debris trapped in the Pacific Ocean by the currents of the North Pacific Gyre. Discovered by NOAA, and publicized by Captain Charles Moore, the patch is estimated to contain 20 times the density of floating debris compared to the global average. The project aims to study the types, extent, and nature of the debris with a view to identifying the scope of the problem and its effects on the ocean biome as well as ways of capturing, detoxifying, and recycling the material. It was organized by the Ocean Voyages Institute, a California-based 501c3 non-profit organisation dealing with marine preservation. The project is based in San Francisco and Hong Kong.
The Indian Ocean gyre, located in the Indian Ocean, is one of the five major oceanic gyres, large systems of rotating ocean currents, which together form the backbone of the global conveyor belt. The Indian Ocean gyre is composed of two major currents: the South Equatorial Current, and the West Australian Current.
The North Atlantic garbage patch is a garbage patch of man-made marine debris found floating within the North Atlantic Gyre, originally documented in 1972. A 22-year research study conducted by the Sea Education Association estimates the patch to be hundreds of kilometers across, with a density of more than 200,000 pieces of debris per square kilometer. The garbage originates from human-created waste traveling from rivers into the ocean and mainly consists of microplastics. The garbage patch is a large risk to wildlife through plastic consumption and entanglement.
Microplastics are fragments of any type of plastic less than 5 mm (0.20 in) in length, according to the U.S. National Oceanic and Atmospheric Administration (NOAA) and the European Chemicals Agency. They cause pollution by entering natural ecosystems from a variety of sources, including cosmetics, clothing, food packaging, and industrial processes. The term microplastics is used to differentiate from larger, non-microscopic plastic waste. Two classifications of microplastics are currently recognized. Primary microplastics include any plastic fragments or particles that are already 5.0 mm in size or less before entering the environment. These include microfibers from clothing, microbeads, plastic glitter and plastic pellets. Secondary microplastics arise from the degradation (breakdown) of larger plastic products through natural weathering processes after entering the environment. Such sources of secondary microplastics include water and soda bottles, fishing nets, plastic bags, microwave containers, tea bags and tire wear. Both types are recognized to persist in the environment at high levels, particularly in aquatic and marine ecosystems, where they cause water pollution. 35% of all ocean microplastics come from textiles/clothing, primarily due to the erosion of polyester, acrylic, or nylon-based clothing, often during the washing process. However, microplastics also accumulate in the air and terrestrial ecosystems. Because plastics degrade slowly, microplastics have a high probability of ingestion, incorporation into, and accumulation in the bodies and tissues of many organisms. The toxic chemicals that come from both the ocean and runoff can also biomagnify up the food chain. In terrestrial ecosystems, microplastics have been demonstrated to reduce the viability of soil ecosystems and reduce weight of earthworms. As of 2023, the cycle and movement of microplastics in the environment was not fully known. Deep layer ocean sediment surveys in China (2020) show the presence of plastics in deposition layers far older than the invention of plastics, leading to suspected underestimation of microplastics in surface sample ocean surveys.
The Indian Ocean garbage patch, discovered in 2010, is a marine garbage patch, a gyre of marine litter, suspended in the upper water column of the central Indian Ocean, specifically the Indian Ocean Gyre, one of the five major oceanic gyres. The patch does not appear as a continuous debris field. As with other patches in each of the five oceanic gyres, the plastics in it break down to ever smaller particles, and to constituent polymers. As with the other patches, the field constitutes an elevated level of pelagic plastics, chemical sludge, and other debris; primarily particles that are invisible to the naked eye. The concentration of particle debris has been estimated to be approximately 10,000 particles per square kilometer.
Plastic pollution is the accumulation of plastic objects and particles in the Earth's environment that adversely affects humans, wildlife and their habitat. Plastics that act as pollutants are categorized by size into micro-, meso-, or macro debris. Plastics are inexpensive and durable, making them very adaptable for different uses; as a result, manufacturers choose to use plastic over other materials. However, the chemical structure of most plastics renders them resistant to many natural processes of degradation and as a result they are slow to degrade. Together, these two factors allow large volumes of plastic to enter the environment as mismanaged waste which persists in the ecosystem and travels throughout food webs.
Boyan Slat is a Dutch inventor and entrepreneur. A former aerospace engineering student, he is the CEO of The Ocean Cleanup.
A trash interceptor is a device in a river to collect and remove floating debris – before the debris flows out into a harbor, for instance.
The South Pacific garbage patch is an area of ocean with increased levels of marine debris and plastic particle pollution, within the ocean's pelagic zone. This area is in the South Pacific Gyre, which itself spans from waters east of Australia to the South American continent, as far north as the Equator, and south until reaching the Antarctic Circumpolar Current. The degradation of plastics in the ocean also leads to a rise in the level of toxics in the area. The garbage patch was confirmed in mid-2017, and has been compared to the Great Pacific garbage patch's state in 2007, making the former ten years younger. The South Pacific garbage patch is not visible on satellites, and is not a landmass. Most particles are smaller than a grain of rice. A researcher said: "This cloud of microplastics extends both vertically and horizontally. It's more like smog than a patch".
"I certainly hope they will be able to get it to work, but this is a very difficult environment where equipment breaks, which is why you normally do things closer to shore, where things are easier to repair," said Miriam Goldstein, director of ocean policy at the Center for American Progress, a liberal think tank. ... Goldstein wrote her Ph.D. dissertation in oceanography on the Pacific Garbage Patch. ... "A great deal of money is being spent on this Ocean Cleanup device," Goldstein said, "when there are various other methods that remove a lot more plastic, for a lot less money."