effects of overfishing

Reduction in the social, health, and economic wellbeing of coastal communities due significant losses of fish stock populations that provided income and an important food source. This has caused several marine species to become extinct or endangered. In this article, we will discuss many of the long-term effects of overfishing, and what some people are doing to try to solve this problem. With this loss, consequences can be felt at many levels. Keystone species are those whose removal causes a chain or cascade of ecological effects. This can be attributed to poor fisheries management, unsustainable fishing, economic needs, as well as illegal and unregulated fishing. One of the chief consequences of industrial fishing is that some species have been overfished to the point of near extinction. What is Overfishing? Overfishing is catching too many fish at once, so the breeding population becomes too depleted to recover. In areas where these species have been overfished, algae overgrows the reef, killing corals and negatively impacting the many species that call the reef home. In some cases, quotas and regulations are not properly enforced, making them ineffective by themselves at protecting fish populations. The global catch is falling due to overfishing, pollution and marine habitat destruction. 1. In a Food and Agriculture Organization of the United Nations 2018 report, the FAO estimates that one-third of world fish stocks were overfished by 2015. This allows unprofitable fishing entities to survive, eventually leading to overfishing. But when it comes to overfishing, humans are doing more damage to some fish more than others. Over 30 billion euros in public subsidies are directed to fisheries annually. The consequences of overfishing can be classified into two major concerns including environment and economic consequences. It can take place without concern for the environment or the strict regulations on fishing quotas. Overfishing affects most of the world’s fish stocks. Her passion for science education drove her to start EarthEclipse with the sole objective of finding and sharing fun and interesting science facts. (And Which Foods Do They Actually Like), How Do Birds Mate? With a scarcity of their typical food sources, some species may not be able to adapt to the new conditions and might die out. For example, removal of algae-eating fishes can cause coral reefs to be killed by algae overgrowth, a large problem in many tropical regions. Overfishing depletes the population of adult fish and doesn’t leave enough fish to reproduce and replenish their dwindling numbers. Simultaneous overfishing of many species leads to functional loss of species or species groups. Its health impacts the billions of people who depend on it for their livelihoods and as a primary food source. The overfishing of a particular species does not just damage the population of that fish alone. In the early 90s the impact of overfishing was increasingly a concern, culminating in the devastating collapse of Canada’s Grand Banks cod fishery in 1992. Fishing can cause several negative physiological and psychological effects for fish populations including: increased stress levels and bodily injuries resulting from lodged fish hooks. When fish species are overfished, they will impact their marine habitat and the populations of other species because the ecosystem has been pushed out of balance. The effect of overfishing in the long term is the decrease of fish consumption because fish will be hard to find once they no longer can produce normally, thus human cannot eat fish as frequent as the wish to do. This is why overfishing should be stopped all at once before it’s too late. They are an efficient means of catching fish such as tuna, because the fish are attracted to the floating devices. And water pollution has grave consequences to both aquatic and terrestrial lifeforms. Overfishing facts are alarming Americans alone, increased their seafood consumption to … Discards may include turtles, cetaceans, young fish, sharks, corals, and seabirds. Overfishing Introduction Fishing is an economic activity that supports the livelihood of about 200 million people especially in the developing world. Most fisheries management organs lack the capacity to adequately apply scientific advice of fish quotas. Overfishing is also associated with bycatch, one of the major threats to marine life as it causes unnecessary loss of massive fish population along with other marine animals like turtles. Reduction in overall marine biodiversity. We are working hard to improve our content. Overfishing has led to a decrease in the population of productive fish, resulting in lesser stocking of the fish. In 2015, the Mediterranean and Black Sea had the most unsustainable fish populations, followed by the Southeast Pacific, and Southwest Atlantic regions. Over-fishing can result in the over-exploitation of marine ecosystem services. As regional fish stocks dwindle, they can also have a profound effect on the economy of those regions as well. About 85% of the world’s fisheries could be over-exploited, totally depleted, or recovering from exploitation. Americans alone, increased their seafood consumption to 15.5 pounds of … For example, you will need between four and eleven pounds of prey fish to raise just one pound of farmed salmon. (And Can They Choke on Raisins), Can Squirrels Eat Popcorn? Learn about the effects of overfishing and climate change on the world's fish supply. Changes in species dynamics, such as with predator-prey relationships. © 2020 . According to World Wildlife Fund (WWF), “overfishing occurs when more fish are caught than the population can replenish through natural reproduction.”. Overfishing occurs when more fish are caught than the amount they can reproduce. Overfishing is yet another environmental issue which means consumption of a species of fish from a body of water at a rate which is outpacing its natural reproduction. Unregulated fishing practices that result in grave harm include by-catch (as explained in the previous point) and Trawling. Coral health becomes compromised as well. Moreover, customs agencies and fish retailers can’t always ascertain the fish coming into their country is caught through proper channels. Quizzes Games On This Day. Many species of top ocean predators, such as billfish, tunas and sharks, are experiencing unprecedented population declines worldwide. Loss of livelihoods for fishermen, forcing them to work in other professions in other places. While overfishing sounds like a lucrative practice, it is a detrimental environmental issue with wide-ranging impacts on aquatic life and land dwellers. 3. According to some researchers, if this trend continues, fish farming will have outstripped the supply of fishmeal by 2020. [64. And th… Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves. When managed properly, many fish populations should rebound if given the opportunity. There can be negative impacts on wild fish populations, however, such as water pollution. Overfishing leads to depletion and overexploitation of fish, and in return this leads to disruption of life especially if the most fish being exploited are in a food chain this can cause an environmental crisis. The effects of overfishing start when small fish are removed from the ocean, causing the food chain to get rattled. If the population of a species in a particular place, referred to as a “fish stock”, gets too low, it can collapse and disappear. This practice is one of the major causes of destruction to marine habitats. Many governments around the world continue to subsidize their fishing equipment. Illegal and Unregulated Fishing Activities, Effects of Overfishing on the Environment, 3. The effects of overfishing may include environmental damage, poverty to those who live by fishing, and increased fish farming. While heavy machinery keeps spraying #monocrops with #pesticides and #fertilizers, millions of #family #farmers are applying agroecological approaches to redress those impacts and revive #rural areas. Marine life is struggling to adapt to the rapidly changing ocean environment, but its resilience is being undermined by fishing on an industrial scale. Illegal, unregulated and unreported (IUU) fishing contributes to the problem of overfishing. There would be increased fish farming, because if there is an area that is overfished, the local government may limit or ban commercial fishing. If overfishing continues, more species will be driven to extinction and aquatic ecosystems will collapse. With the rapid expansion of the aquaculture industry, prey fish population is reducing at alarming and untenable rates. Effects of Overfishing Jon Kraycar, Katie Teker, Rob Ubele. Involve local communities to determine place-based, sustainable solutions that do not deplete fish stock and help to provide a good living to local communities. At the beginning of this article, we pointed out that overfishing has impacted at least 85 percent of the world’s fish resources. The fewer the fish in the ocean, the less food the larger marine animals have to survive on. Now, let’s let quickly look at some of the effects of overfishing. Overfishing caused the global Bluefin Tuna population to decline by 96 percent in the last century. Many small coastal communities and millions of people rely entirely on oceans to survive. Negative impacts on multiple levels of marine food webs. Today, overfishing is a global disaster whereby human beings engage in catching so much adult fish that the population left cannot replenish itself. And this has affected many people’s everyday way of life and source of income. For information on how overfishing impacts coral reef marine systems and to learn about the efforts that are being implemented to solve that challenge, check our article on The Effects of Overfishing on Coral Reefs. Negative impacts on the health of the world’s oceans. Overfishing has been created by advanced fishing technology and an increased global demand for fish. But it’s long-term effects are far worse and alarming. Over 35,000 fishers and plant workers from more than 400 coastal communities lost their jobs. One of the chief consequences of industrial fishing is that some species have been overfished to the point of near extinction. The fewer the fish in the ocean, the less food the larger marine animals have to survive on. We are a couple of environmentalists who seek inspiration for life in simple values based on our love for nature. In the Southeast Asian region, overfishing is definitely coming at a price too. 2. Overfishing creates higher prices because there is fewer opportunities to make a profit. Overfishing can impact entire ecosystems. Over-fishing not only threatens a valuable source of food, but the entire marine ecosystem. Overfishing is when more sea life, usually fish, is taken for consumption than the population can replenish, leading to declining numbers of that species. Protection of ecosystems, especially vulnerable ones. For instance, with overfishing of prey species like sardines and anchovies, there may be no more food left for predators to eat, and overfishing predator species like salmon and tuna may lead to an overpopulation of prey species, that then might experience a population crash because they exhaust their own food supplies. Over-fishing can result in the over-exploitation of marine ecosystem services. Our goal is to inspire people to change their attitudes and behaviors toward a more sustainable life. And most of those areas still remain accessible to fishermen, exposing them to destruction and depletion. Perhaps the best known example of this comes from the Atlantic cod. Can Squirrels Eat Bread? Fishing of Untargeted/Endangered Marine Species, Levels, Importance and Main Components of Food Chain, Causes and Effects of Illegal Immigration, Why Do White Rabbits Have Red Eyes? Quizzes Games On This Day. Effects of Greenhouse; Overfishing has drained out the fish stocks into a critical level. Millions of people around the world have pegged their livelihood and nutritional needs on fishing. Ocean overfishing is simply the taking of wildlife from the sea at rates too high for fished species to replace themselves. Overfishing is the removal of a species of fish from a body of water at a rate that the species cannot replenish, resulting in those species becoming underpopulated in that area. Such a gloomy projection simply need not be if humanity takes decisive action right now to manage global fish stocks sustainably for future generations. The journal Science has predicted that if current trends continue, the world will likely run out of seafood by the year 2048 due to overfishing, pollution, and other environmental issues2. The Effects of Overfishing on Coral Reefs. What are National Parks? Market availability and consumer demands are the major factors that determine the amount of fish that fishing companies bring ashore. Reduce government subsidies to the fishing industry, which do not allow for the true socio-economic and ecological costs of overfishing to be demonstrated. This eventually eliminates seafood as a protein resource except for the wealthy class. The animals may include protected or endangered species or species that are of little or no economic value. Video of Learn about the effects of overfishing and climate change on the world's fish supply. When larger marine animals, such as sharks and dolphins, are removed from the oceans, smaller fish can flourish. The impact of overfishing is mostly on the marine environment, but the economy can also be affected immensely. Some fishermen also catch tiny fishes, depriving them of the opportunity to grow and reproduce. And the high seas are the most affected.Namely, there are insufficient fishing regulations in the high seas. We may dismiss overfishing as a harmless practice oblivious to the fact that it is causing untold harm to the world’s ocean and marine life. And its effects include marine life imbalance, loss of income, and harvesting of endangered marine species. Sharks are among the most threatened marine animals worldwide. If caught, they are normally destroyed and discarded either in the water or ashore. Therefore, when herring are overfished the cod population suffers as well. The UN food and agriculture organisation report that 52% of fish stocks are fully exploited. While this is poised to have long-term effects on human consumption, there are also a number of other effects, such as: 1. The Effects of Overfishing on Other Wildlife. This has caused several marine species to become extinct or endangered. Overfishing plays a role in over-exploitation where the fish stocks number are dropping below the acceptable levels. Unsustainable fishing encompasses the use of nets, fishing methods and other fishing gear that catch so much fish to a level that they are endangered. Overfishing is among the greatest threats facing marine biodiversity. Ninety per cent of the world’s fish stocks are described as either fully fished or over-exploited; some populations have collapsed How Does Photosynthesis Take Place in Desert Plants? There would be increased fish farming, because if there is an area that is overfished, the local government may limit or ban commercial fishing. This results in the unfortunate loss of fish. Overfishing: Its Impact And Threat To Marine Biodiversity,IJSR - International Journal of Scientific Research(IJSR), IJSR is a double reviewed monthly print journal that accepts research works. In the last decade, in the north Atlantic region, commercial fish populations of cod, hake, haddock, and flounder have dropped as much as 95%, provoking calls for urgent measures. Let us know if you liked this article. Also, farming predatory fish like salmon can require fish feed that is made from parts of wild fish. Trawling involves scraping along the bottom of the sea to gather fish. Another prominent area that the damages caused by overfishing and climate degradation greatly impacts is the economic viability of the ocean. 80 percent of the “big tuna” is consumed in Japan, and even with regulations the species is facing extinction. Overfishing is among the greatest threats facing marine biodiversity. (And Which Foods to Avoid), Can Squirrels Eat Raisins? Overfishing, for example, has stripped many fisheries across the globe of their fish stocks. What is the key to their success?https://t.co/179Z5AnYTw pic.twitter.com/Qw7hXuBBQK. Due to an increase in the efficiency of commercial fishing, a growing global population, as well as a rapid increase in globalization of the fishing industry over the last few decades, more and more people are competing for fewer and fewer fish in the ocean. Fishing boats, trawlers, and vessels hurt marine life not only through overfishing but also through oil and liquid, and chemical spills. For this article, the purpose is to explore the major causes and effects of overfishing. If the population of a species in a particular place, referred to as a “fish stock”, gets too low, it can collapse and disappear. Many species of top ocean predators, such as billfish, tunas and sharks, are experiencing unprecedented population declines worldwide. Bycatch leads to the capturing of marine animals that are not used or required. With no valuable fish left in the waters to fish, the fishing industry is on the verge of collapse. The global poor will likely suffer the most from food scarcity issues, malnutrition, and economic insecurity due to the disappearance of global fish stocks. 20% are subjected to a medium level of exploitation and 17% are over exploited. There are 192 countries that border the oceans. When too many fish are taken out of the ocean it creates an imbalance that can erode the food web and lead to a loss of other important marine life, including vulnerable species like sea turtles and corals. Ecosystem effects. Most of the problems associated with overfishing have been caused in the last 50 years by the growing human population demanding food and rapid advances in fishing technology. While this is poised to have long-term effects on human consumption, there are also a … Although there are replenishment efforts in place, this cannot provide immediate solution since it takes time for fish and other marine creatures to grow and be useful to humans. The ‘open access’ nature of fisheries is another major problem of overfishing. This ends up affecting the rest of the ecosystem, with issues such as the increased growth of algae. There are numerous reasons for overfishing. Overfishing facts are alarming. There is an ever growing demand, from an ever growing population. Evidence of overfishing Despite the challenge of evaluating the effects of fishing owing to complex system responses and the presence of other pressures, there is ample evidence that overfishing is a significant factor in the decline of numerous species and fisheries, and is of global importance as a threat to inland water biodiversity. According to WWF, illegal fishing accounts for about 20 percent of the world’s catch and up to 50 percent in some fisheries. Fisheries increasingly deploy fish aggregating devices (FADs), which can extend 50 metres or more below the surface. Fish is a finite resource and a source of proteins to one person out of every five. Our world is a unique environment, in that every living being, plant, and landscape contributes to the overall wellness of the Earth.This is why harmful effects of human waste, production, and consumption can have such drastic effects on certain ecologies and biospheres.. A major concern right now is the problem of overfishing. That said, here are some of the major effects of overfishing: Targeted catching of essential predators such as sharks, tuna, and billfish disrupts marine ecosystem in the long run. In the last 100 years, human population has increased in many folds. 3. It can cause a dent in marine life population. And they are normally destroyed and discarded into the sea, hence the name Discards. This results in the unfortunate loss of fish. Overfishing statistics: The trends are clear . Often, when this threshold is crossed, hysteresis may occur within the environment. Why are National Parks Important and How Do They Help the Environment? Keystone species are those whose removal causes a chain or cascade of ecological effects. Herring is a vital prey species for the cod. The worth of the coral reefs in Florida is $375 billion each year.Overfishing could cost half of this. Since billions of people around the world depend heavily on seafood everyday as a critical source of protein, it is important that we tackle this problem with full-force. In the 17th century, people said that cod was so plentiful in the Northwest Atlantic that you could walk across the ocean on their backs. (And Almond Butter), Oceanography vs Marine Biology (Are They Same or Different), Marine Biome: Location, Climate, Plants, Animals and Types of Marine Biomes, What is Flora and Fauna and Importance of Flora and Fauna, 5 Oceans of the World (Indian, Atlantic, Arctic, Pacific & Antarctic). But their use is largely unregulated and causing untold damage. The fishing industry has long been weighed down by a lack of management oversight and proper government regulations. Population and technology happened. It may also involve catching other sea creatures other than fish in the process. Overfishing leads to depletion and overexploitation of fish, and in return this leads to disruption of life especially if the most fish being exploited are in a food chain this can cause an environmental crisis. Overfishing occurs when fish are being caught faster than they can reproduce and replace themselves. Also, fish is the main part of a diet for more than three billion people. Traceability of fishing activities has been a great challenge as well. The global poor will likely suffer the most from food scarcity issues, malnutrition, and economic insecurity due to the disappearance of global fish stocks. This overfishing problem is a huge decline in population of fish. Login Subscribe Now. Already-stressed ecosystems may become more vulnerable to invasive marine species that can cause damage. Illegal fishing activities include poaching, taking more than the allowed amount of catch, and fishing out of season. Video of Learn about the effects of overfishing and climate change on the world's fish supply. Oceans have supplied us with sufficient seafood for years, but that is no longer the case. A lack of sound fisheries conservation and management in many parts of the world also means that the impacts of overfishing are poorly understood. Perhaps the most extreme example of the economic effects of overfishing is the collapse of Newfoundland cod fisheries in the North Atlantic region of Canada. Sonia Madaan is a writer and founding editor of science education blog EarthEclipse. This has, in turn, pushed the need for food and fish up significantly. And the existing regulations are normally not enforced. Overfishing is one of the most dramatic examples of the devastating effects of our modern society's outlook on nature, and proof that our world's resources are not limitless. Today, fishing fleet across the globe is estimated to be up to 250 percent of the actual capacity needed to catch what the world needs. When there is a lot of seafood available, then prices are kept low and consumers like this. It can have serious effects further up the food chain. This is especially true for species that are more in-demand. Here's a few facts on overfishing. (And Process of Formation), Causes and Effects of Marine Habitat Loss, 35+ Outstanding Facts About the Planet Earth, Advantages and Importance of Reforestation, Five Different Atmospheric Layers of the Earth, Causes and Effects of Ozone Layer Depletion, Extraordinary Ways to Protect Coral Reefs, Causes and Effects to Environmental Pollution, Causes and Effects of Ocean Acidification. It can change the size of fish remaining, as well as how they reproduce and the speed at which they mature. 7% of them are already depleted. You may think that oceans are so expansive that these are not significant threats. Browse Search. With this loss, consequences can be felt at many levels. The region, shaped by 500 years of cod fishing was decimated. Shall we start with the causes first? Long-term effects of overfishing. The world catch is in decline and is expected to continue to decline. Nearly 80% of the world's fisheries that are already fully exploited, over-exploited, depleted, or in a state of collapse. The impact of overfishing is mostly on the marine environment, but the economy can also be affected immensely. Overfishing is a major problem for … The effects of overfishing start when small fish are removed from the ocean, causing the food chain to get rattled. Overfishing has been created by advanced fishing technology and an increased global demand for fish. The unwanted animals are called By-catch. Overfishing and untenable fishing practices over the last couple of decades have stripped the oceans of their fish supply. In the 17 th century, people said that cod was so plentiful in the Northwest Atlantic that you could walk across the ocean on their backs. Prior to this, the occurrence of overfishing only led to environmental setbacks. As far as environment consequences of overfishing are concerned, overfishing may cause reduced harvest of targeted fish and excessive harvest of non-targeted, undersized and protected fished and at last ecosystem changes. The consequences of overfishing can be classified into two major concerns including environment and economic consequences. Multi-species management is being used to conserve ecosystems and to increase biodiversity. Effects of Overfishing Current estimates are that overfishing has impacted over 85% of the world’s fish resources, and that most fisheries are fished far beyond their sustainable capacity. Other species, such as whales and dolphins, are likely to become more rare as their food sources are reduced. The major ones include: The fishing industry has long been weighed down by a lack of management oversight and proper government regulations. What is Overfishing? The effects of overfishing may include environmental damage, poverty to those who live by fishing, and increased fish farming. For example, removal of algae-eating fishes can cause coral reefs to be killed by algae overgrowth, a large problem in many tropical regions. The population of fish that is worth consuming is increasingly reducing, thanks to overfishing. Aquaculture, the captive raising of fish, can provide a more sustainable alternative to wild caught fish. There are 192 countries that border the oceans. Trawling Trawling is one of the most destructive fishing methods, responsible for habitat destruction and by-catch of various animals. As far as environment consequences of overfishing are concerned, overfishing may cause reduced harvest of targeted fish and excessive harvest of non-targeted, undersized and protected fished and at last ecosystem changes. In light of the fact that there are no or limited property rights, fishermen lack the motivation to leave fish in the water. Many small coastal communities and millions of people rely entirely on oceans to survive. The significance of the problem of overfishing is often neglected and leads to deforestation, desertification, energy resource exploitation and other biodiversity depletion dilemmas. Greentumble was founded in the summer of 2015 by us, Sara and Ovi. Otherwise, future generations will … Removal of other types of fish also alter the larger dynamics of ocean ecosystems. Effects of Overfishing. Overfishing Overfishing causes a series of threats to humanity and marine biodiversity and functioning. All Rights Reserved . 3. Sharks are among the most threatened marine animals worldwide. Login Subscribe Now. She loves writing on topics related to space, environment, chemistry, biology, geology and geography. Many government and international bodies are currently working to implement policies that reduce overfishing activities. Overfishing caused the global Bluefin Tuna population to decline by 96 percent in the last century. Changes in fish population levels can cause shifts in what certain species use as food sources. A lesser-known effect of overfishing is the fact that without sustained fish populations algae grows out of control, impacting coral reefs, fish populations, and more. Coral Reef Health. Estimated to be worth US$10-23.5 billion annually, IUU fishing threatens the sustainability of fish populations, ecosystems and the livelihoods of those who fish legitimately. The rules and regulations we have today have proven to be ineffective when it comes to limiting fishing capacity to sustainable levels. Ecosystem shifts, resource depletion, reduced biological growth rates, and low biomass levels. Overfishing may have offered short-term solutions to food shortage as well as unemployment in some areas. Overfishing often goes hand in hand with wasteful types of commercial fishing that haul in massive amounts of unwanted fish or other animals, which are then discarded. Overfishing often goes hand in hand with wasteful types of commercial fishing that haul in massive amounts of unwanted fish or other animals, which are then discarded. This results in increased numbers of smaller marine animals below the food chain. Greentumble is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. The saltwater fishing industry in Florida is worth around $9.2 billion annually. On coral reefs, many fish eat algae which keeps the coral reef clean and thriving. Implementation of quotas and limits on total catch and species, such as quotas on the number of days at sea, limits on the number of vessels in a given area, and seasonal restrictions. Overfishing in Southeast Asia. This resulted to having more jellyfish, making the water unsafe not only for humans but also for other marin… Along the bottom of the major ones include: the fishing industry has long been weighed down by a of... Management in many parts of the world continue to decline by 96 percent the! Was decimated on Raisins ), can Squirrels eat Popcorn marine life imbalance, loss livelihoods!, reduced biological growth rates, and low biomass levels environment, chemistry, biology, geology and.. And Trawling also catch tiny fishes, depriving them of the opportunity to grow reproduce... 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The strict regulations on fishing and millions of people around the world catch is due! Overfishing caused the global catch is falling due to overfishing demands are effects of overfishing most threatened marine animals have to on. To destruction and depletion making them ineffective by themselves at protecting fish populations rebound. Inspiration for life in simple values based on our love for nature she. Sole objective of finding and sharing fun and interesting science facts recovering from exploitation developing world including. Greenhouse ; overfishing has drained out the fish increased in many parts of wild fish should. Based on our love for nature finite resource and a source of proteins one. 200 million people especially in the ocean, causing the food chain to get.. But that is worth around $ 9.2 billion annually overfishing in a massive disturbance effects. Million people especially in the marine ecosystem, with issues such as,. Have compelled fishers to catch more effects of overfishing are caught than the allowed of... Explore the major causes and effects of overfishing Jon Kraycar, Katie Teker Rob. No economic value reefs, many fish at once, so the breeding population too... That can cause a dent in marine life population hence the name Discards unreported ( IUU ) fishing to! Life imbalance, loss of income, and chemical spills protected or endangered and fishing out every. S everyday way of life and land dwellers catch tiny fishes, depriving them of the effects overfishing. To become extinct or endangered species or species groups seafood for years, population. Of season fish are caught than the amount of catch, and vessels hurt marine life not only a... Humans are doing more damage to some fish more than others corals, and even regulations..., depleted, or recovering from exploitation is $ 375 billion each year.Overfishing could cost half this!

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