Key Takeaways
- According to the FAO's 2022 SOFIA report, 35.4% of assessed global fish stocks are currently fished at biologically unsustainable levels, marking a steady increase from 10% in the 1970s.
- The UN's Food and Agriculture Organization reports that global fish production from capture fisheries peaked at 96.3 million tonnes in 2018 and has since plateaued due to overfishing pressures.
- A 2023 study by Our World in Data indicates that 64% of Atlantic Ocean fish stocks are overfished, the highest regional rate worldwide.
- The IUCN Red List shows 17% of marine fish species threatened primarily by overfishing in 2023.
- Bluefin tuna populations have declined by 97% in the Atlantic due to overfishing since the 1960s, per ICCAT 2022.
- Overfishing has caused 33% of shark species to be classified as threatened with extinction, IUCN 2020.
- Global economic losses from overfishing estimated at $83 billion annually, per 2021 World Bank.
- Overfishing costs the EU €5.4 billion per year in lost revenue and jobs, STECF 2022.
- In Indonesia, overfishing leads to $3 billion annual losses in fisheries revenue, per 2020 study.
- Overfishing causes habitat destruction costing $100 billion in ecosystem services loss yearly.
- Bottom trawling from overfishing destroys 1.5 billion hooks of seafloor habitat annually.
- Overfishing disrupts food webs, causing jellyfish blooms in 60% of impacted ecosystems.
- 70% of fisheries management failures due to ignoring ecosystem effects of overfishing.
- Only 0.7% of the ocean is protected from overfishing as MPAs with full enforcement, 2023 MPAtlas.
- 58 countries have implemented rights-based fisheries management, reducing overfishing by 20%.
Overfishing threatens global fish stocks and marine ecosystems worldwide.
Economic Consequences
- Global economic losses from overfishing estimated at $83 billion annually, per 2021 World Bank.
- Overfishing costs the EU €5.4 billion per year in lost revenue and jobs, STECF 2022.
- In Indonesia, overfishing leads to $3 billion annual losses in fisheries revenue, per 2020 study.
- Global subsidies for overfishing total $35.4 billion yearly, fueling 35% excess capacity, Sumaila 2021.
- U.S. Northeast multispecies fishery losses from overfishing: $1.2 billion since 1996, NOAA.
- West African fisheries lose $2.3 billion annually to foreign overfishing, ODI 2019.
- Global seafood trade value hit $160 billion in 2020, but overfishing threatens 50% decline by 2050.
- China's distant water fleet costs $5.9 billion in subsidies for overfished stocks, 2020 AidData.
- Overcapacity in global fishing fleets leads to $50 billion in wasteful expenditure yearly, FAO 2018.
- Iceland's cod fishery crash in 1970s cost 20% of GDP temporarily from overfishing.
- IUU fishing generates $23-50 billion illegal profits annually while depleting stocks.
- Small island nations lose $500 million yearly to illegal overfishing in EEZs, UN 2022.
- Overfishing in the Black Sea caused 80% drop in turbot revenue since 1990s.
- Global aquaculture growth of 5.2% offsets only 20% of capture declines from overfishing.
- Job losses from overfished stocks: 200,000 in EU fisheries since 2008, per 2022 report.
- Overfishing subsidies in developing countries total $20 billion, distorting markets, 2021.
- U.S. Gulf of Mexico red snapper overfishing cost $300 million in recreational losses 2010s.
- Global fish prices rose 30% since 2010 due to supply shortages from overfishing.
- Thailand's shrimp fishery overcapacity led to $1 billion losses 2015-2020.
- Overfished stocks reduce MSY by 20-50% globally, costing $10-20 billion, Hillard 2020.
- Pacific Island tuna fisheries lose $400 million to foreign fleets annually.
- EU bluefin tuna recovery saved €1.6 billion in revenue since 2009 moratorium.
- Overfishing in Bay of Bengal costs Bangladesh $500 million yearly in exports.
- Global fleet overcapacity: 200% excess, burning $30 billion fuel yearly.
- Collapse of Newfoundland cod fishery cost Canada $4 billion 1992-2010.
- IUU fishing in Southeast Asia: $6.5 billion annual economic loss, 2022.
- Overfishing reduces fishery profits by 13% globally per year, World Bank 2017.
- Alaska pollock fishery sustainable, but past overfishing cost $500 million pre-1980s.
- Global overfishing leads to $83 billion foregone revenue, equivalent to 64% of industry value.
Economic Consequences Interpretation
Environmental and Ecosystem Effects
- Overfishing causes habitat destruction costing $100 billion in ecosystem services loss yearly.
- Bottom trawling from overfishing destroys 1.5 billion hooks of seafloor habitat annually.
- Overfishing disrupts food webs, causing jellyfish blooms in 60% of impacted ecosystems.
- Nutrient cycling in overfished reefs reduced by 40%, leading to algal overgrowth, 2021.
- Overfishing of predators increases prey herbivory, shifting seagrass loss by 30%.
- Ghost fishing from lost gear kills 640,000 tonnes of marine life yearly.
- Overfished systems show 50% reduction in trophic level of catches since 1950.
- Coral bleaching exacerbated by overfished reefs lacking grazers, 20% faster decline.
- Bycatch from overfishing kills 300,000 dolphins, whales yearly.
- Overfishing reduces carbon sequestration in mangroves by 25% via prey shifts.
- Ecosystem regime shifts from overfishing occurred in 30% of large marine ecosystems.
- Overfishing increases ocean acidification impacts by 15% through biomass loss.
- Trophic cascades from predator overfishing double invasive species success rates.
- Overfished kelp forests show 60% urchin barren expansion globally.
- Plastic pollution from fishing gear: 75% of ocean plastics are from overfishing nets.
- Overfishing reduces resilience to hypoxia, with 40% more dead zones in fished areas.
- Biodiversity loss from overfishing: 33% fewer species in heavily fished vs. protected areas.
- Overfishing shifts microbial communities, reducing nitrogen fixation by 20%.
- Seabird populations declined 70% linked to overfished prey stocks since 1950.
- Overfishing exacerbates erosion in coastal ecosystems by 25% via sediment destabilization.
- Functional diversity loss in overfished communities: 45% reduction in key traits.
- Overfishing increases disease prevalence in corals by 50% due to grazer loss.
- Oxygen minimum zones expand 20% faster in overfished regions.
- Overfishing reduces wave attenuation by seagrasses, increasing storm damage 30%.
- Ecosystem production potential down 25% in overexploited large marine ecosystems.
- Overfishing linked to 15% increase in harmful algal blooms via nutrient shifts.
- Genetic diversity loss in overfished stocks: 20% reduction per generation.
Environmental and Ecosystem Effects Interpretation
Impact on Marine Species and Biodiversity
- The IUCN Red List shows 17% of marine fish species threatened primarily by overfishing in 2023.
- Bluefin tuna populations have declined by 97% in the Atlantic due to overfishing since the 1960s, per ICCAT 2022.
- Overfishing has caused 33% of shark species to be classified as threatened with extinction, IUCN 2020.
- Atlantic cod stocks off Newfoundland collapsed by 99% from overfishing in the 1990s, DFO 2023.
- 60% of coral reef fish species in the Indo-Pacific show biomass declines over 50% from overfishing, per 2021 Nature.
- Orange roughy populations are depleted by 80-90% globally due to slow growth and overfishing, FAO 2018.
- Overfishing has led to local extinctions of 20% of large fish species in the Mediterranean, per 2022 WWF.
- Pacific sardine populations crashed by 90% from 2007-2020 due to overfishing and environmental factors, NOAA.
- 41% of ray species are critically endangered or endangered primarily from overfishing, IUCN 2021.
- Bigeye tuna in the Pacific is overfished with spawning biomass at 10% of unfished levels, WCPFC 2023.
- Overfishing reduced Northwest Atlantic right whale prey (copepods) indirectly by 50%, per 2019 study.
- 25% of global seahorse populations are threatened by incidental overfishing in trawls, IUCN 2022.
- Patagonian toothfish stocks depleted by 70% in Southern Ocean from illegal overfishing pre-2000, CCAMLR.
- Over 50% biomass reduction in groupers across Southeast Asia from overfishing, FAO 2020.
- Yellowfin tuna in Indian Ocean at 20% of unfished spawning stock due to overfishing, IOTC 2022.
- Local extinctions of abalone species in California from overfishing, reaching 99% decline, NOAA 2021.
- 37% of freshwater fish species threatened globally, many from overfishing, IUCN 2023.
- Swordfish North Atlantic populations recovered 70% but still 40% below targets from past overfishing, ICCAT.
- Overfishing caused 80% decline in scallop populations in the Sea of Japan, FAO 2019.
- 28% of squid stocks in FAO areas are overexploited, leading to population crashes, 2022.
- European eel populations declined 90-95% since 1980 due to overfishing, ICES 2023.
- 45% of lobster species assessed are threatened by overfishing, IUCN 2021.
- Overfishing led to collapse of Peruvian anchovovy fishery multiple times, 90% drops, FAO.
- Monkfish in the Gulf of Alaska depleted by 85% from overfishing 1980s-2000s, NOAA.
- 22% of bivalve species threatened globally by overharvesting, IUCN 2022.
- Skipjack tuna shows signs of overfishing with F/Fmsy >1.2 in WCPO, WCPFC 2023.
- Overfishing has reduced global fish biodiversity by 15% since 1970, per 2021 BioScience.
Impact on Marine Species and Biodiversity Interpretation
Overfishing Prevalence and Trends
- According to the FAO's 2022 SOFIA report, 35.4% of assessed global fish stocks are currently fished at biologically unsustainable levels, marking a steady increase from 10% in the 1970s.
- The UN's Food and Agriculture Organization reports that global fish production from capture fisheries peaked at 96.3 million tonnes in 2018 and has since plateaued due to overfishing pressures.
- A 2023 study by Our World in Data indicates that 64% of Atlantic Ocean fish stocks are overfished, the highest regional rate worldwide.
- WWF data from 2021 shows that 90% of large predatory fish populations, like tuna and billfish, have been depleted by overfishing since 1950.
- The European Commission's 2022 report states that 41% of EU-managed fish stocks in the Northeast Atlantic are overfished.
- NOAA Fisheries' 2023 assessment reveals that 28% of U.S. managed fish stocks are overfished, down from 37% a decade ago due to management efforts.
- A 2020 IUCN report estimates that 37.4% of all marine fish populations are overexploited globally.
- Global illegal, unreported, and unregulated (IUU) fishing accounts for up to 26% of total catch value, exacerbating overfishing, per a 2019 study.
- The FAO notes that in the Mediterranean and Black Sea, 62.3% of stocks are overexploited as of 2020.
- A 2022 analysis by Sea Around Us shows that 66% of fish stocks in Southeast Asian waters are overfished.
- Global fishing pressure has tripled since 1950, leading to 34% of stocks being overfished in 2017 per FAO.
- In the Western Central Pacific, 58% of key tuna stocks are overfished according to the 2021 WCPFC report.
- Oceana reports that 80% of Pacific bluefin tuna populations are overfished as of 2023.
- A 2019 Nature study found that 63% of EU Atlantic stocks were subject to overfishing in 2018.
- The Global Fishing Watch data from 2022 indicates a 20% increase in fishing hours globally since 2012, driving overfishing.
- In 2020, 39% of assessed stocks in the Indian Ocean were overfished per IOTC.
- FAO 2022 data shows global capture fisheries production stagnated at 90.3 million tonnes from 2015-2020 due to overexploitation.
- 75% of global fisheries are fully or overexploited according to a 2021 UNEP report.
- In the Northwest Atlantic, 42% of groundfish stocks are overfished as per NAFO 2023.
- A 2023 study estimates that overfishing has caused a 50% decline in global fish catch potential since 1950.
- 55% of shark and ray stocks are overfished globally per IUCN 2020.
- Global trawling effort increased by 67% between 2012 and 2019, per Global Fishing Watch.
- In 2021, 47% of ICES-assessed stocks in the Northeast Atlantic were overfished.
- FAO reports that small-scale fisheries, contributing 40% of catch, suffer from 30% overcapacity.
- 70% of fish stocks in West Africa are overexploited due to industrial fleets, per 2022 EDF.
- Global overfishing rates for cephalopods reached 50% in 2020 per FAO.
- A 2023 PLOS study shows 59% of global stocks are maximally sustainably fished or overfished.
- In the Eastern Central Atlantic, 72% of demersal stocks are overfished per CECAF 2021.
- Overfishing has led to a 2.6% annual decline in global fish biomass since 1930, per 2020 Science.
- 65% of monitored stocks in the South Atlantic are overfished as of 2022 per SEAFO.
Overfishing Prevalence and Trends Interpretation
Policy and Management Stats
- 70% of fisheries management failures due to ignoring ecosystem effects of overfishing.
- Only 0.7% of the ocean is protected from overfishing as MPAs with full enforcement, 2023 MPAtlas.
- 58 countries have implemented rights-based fisheries management, reducing overfishing by 20%.
- EU landing obligation reduced discards by 40% but overfishing persists in 37% stocks, 2022.
- Global catch reporting covers only 50% of small-scale fisheries, hindering management.
- 25% of RFMOs have harvest control rules preventing overfishing in all stocks.
- U.S. rebuilt 50 overfished stocks since 2000 via Magnuson-Stevens Act.
- IUU listings under Port State Measures cover 90 countries, reducing illegal catch 30%.
- Only 7% of global catch under scientifically set quotas to avoid overfishing.
- Tuna RFMOs reformed harvest strategies in 60% of stocks post-2018 Kobe plot.
- National plans of action against IUU adopted by 120 countries, FAO 2022.
- Marine reserves recover overfished stocks 2x faster, covering 8% of EEZs.
- Catch share programs adopted in 22 countries, stabilizing 70% of managed stocks.
- FAO Code of Conduct compliance: only 40% of members fully implement.
- 85 RFMOs and arrangements exist, but only half have binding overfishing limits.
- Subsidies reform: WTO agreement phased harmful subsidies for 54 members.
- Observer coverage on vessels: average 1%, insufficient for overfishing monitoring.
- Ecosystem-based fisheries management in 30 countries, reducing bycatch 25%.
- VMS mandatory in 70% of distant water fleets, improving compliance 15%.
- Stock assessments updated annually for only 20% of global stocks.
- Bans on fish aggregating devices reduced juvenile catch 50% in 5 RFMOs.
- National IUU task forces in 50 countries prosecuted 1,000 cases 2015-2020.
- High-seas fishing closed in 5% of areas via BBNJ treaty progress 2023.
- Quota trading systems in 15 fisheries increased economic efficiency 30%.
- Traceability systems cover 25% of seafood trade, reducing IUU 10%.
- Rebuilding plans successful in 70% of U.S. stocks within timelines.
Policy and Management Stats Interpretation
Sources & References
- Reference 1FAOfao.orgVisit source
- Reference 2OURWORLDINDATAourworldindata.orgVisit source
- Reference 3WORLDWILDLIFEworldwildlife.orgVisit source
- Reference 4OCEANS-AND-FISHERIESoceans-and-fisheries.ec.europa.euVisit source
- Reference 5FISHERIESfisheries.noaa.govVisit source
- Reference 6IUCNiucn.orgVisit source
- Reference 7FRONTIERSINfrontiersin.orgVisit source
- Reference 8SEAAROUNDUSseaaroundus.orgVisit source
- Reference 9WCPFCwcpfc.intVisit source
- Reference 10OCEANAoceana.orgVisit source
- Reference 11NATUREnature.comVisit source
- Reference 12GLOBALFISHINGWATCHglobalfishingwatch.orgVisit source
- Reference 13IOTCiotc.orgVisit source
- Reference 14UNEPunep.orgVisit source
- Reference 15NAFOnafo.intVisit source
- Reference 16SCIENCEscience.orgVisit source
- Reference 17ICESices.dkVisit source
- Reference 18EDFedf.orgVisit source
- Reference 19JOURNALSjournals.plos.orgVisit source
- Reference 20SEAFOseafo.orgVisit source
- Reference 21IUCNREDLISTiucnredlist.orgVisit source
- Reference 22ICCATiccat.intVisit source
- Reference 23DFO-MPOdfo-mpo.gc.caVisit source
- Reference 24WWFwwf.panda.orgVisit source
- Reference 25CCAMLRccamlr.orgVisit source
- Reference 26PORTALSportals.iucn.orgVisit source
- Reference 27ACADEMICacademic.oup.comVisit source
- Reference 28WORLDBANKworldbank.orgVisit source
- Reference 29STECFstecf.jrc.ec.europa.euVisit source
- Reference 30SCIENCEDIRECTsciencedirect.comVisit source
- Reference 31ODIodi.orgVisit source
- Reference 32AIDDATAaiddata.orgVisit source
- Reference 33FISHERIESfisheries.isVisit source
- Reference 34PEWTRUSTSpewtrusts.orgVisit source
- Reference 35UNun.orgVisit source
- Reference 36GFCMgfcm.intVisit source
- Reference 37IMFimf.orgVisit source
- Reference 38GLOBALSEAFOODglobalseafood.orgVisit source
- Reference 39FFAffa.intVisit source
- Reference 40ECec.europa.euVisit source
- Reference 41SEAFOODSOURCEseafoodsource.comVisit source
- Reference 42OPENKNOWLEDGEopenknowledge.worldbank.orgVisit source
- Reference 43NPFMCnpfmc.orgVisit source
- Reference 44BLOGSblogs.worldbank.orgVisit source
- Reference 45PNASpnas.orgVisit source
- Reference 46IPCCipcc.chVisit source
- Reference 47ESAJOURNALSesajournals.onlinelibrary.wiley.comVisit source
- Reference 48ROYALSOCIETYPUBLISHINGroyalsocietypublishing.orgVisit source
- Reference 49LMElme.noaa.govVisit source
- Reference 50MPATLASmpatlas.orgVisit source
- Reference 51ISS-FOUNDATIONiss-foundation.orgVisit source
- Reference 52CORALMAGAZINEcoralmagazine.comVisit source
- Reference 53CATCHSHAREPROGRAMScatchshareprograms.orgVisit source
- Reference 54WTOwto.orgVisit source
- Reference 55LENFESTlenfest.orgVisit source
- Reference 56RAMLEGACYramlegacy.orgVisit source
- Reference 57FISHERIESfisheries.noaa.orgVisit source
- Reference 58NFFnff.orgVisit source
- Reference 59GAOgao.govVisit source






