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YearDateDeath TollAnimalSpeciesCountryState/Province/RegionCity/LocalCauseCause DescriptionSourceArticleNotes
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2023
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06/12/23Tens of ThousandsFishGulf MenhadenUSATexasQuintana BeachOxygenHigher water temperatures buoyed by global warming.
Bindu Bansinath, "Meanwhile, in Texas, Fresh Signs of Impending Apocalypse," The Cut, June 6, 2023, https://www.msn.com/en-us/weather/topstories/meanwhile-in-texas-fresh-signs-of-impending-apocalypse/ar-AA1crVYG?ocid=entnewsntp&cvid=2f3cfdd6be1f4ce086e0ae443895e543&ei=39.
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2022
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10/5/2022Tens of ThousandsFishSalmonCanadaBritish ColumbiaHeatDried-up creek bed
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9/26/202211FishWhite SturgeonCanadaBritish ColumbiaUnknownUnknownThe GuardianSudden die-off of endangered sturgeon alarms Canadian biologists
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9/23/20221,700FishRedbreat Sunfish / Bluegills / CatfishUSAGeorgiaWilkes CountyPollutionWaters polluted with ammoniaThe Atlanta Journal-ConstitutionNorth Georgia farm fined $85K for wastewater spill, fish kill
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9/22/2022"Large Community"FishPeanut BunkerUSANew JerseyHarvey CedarsUnknownUnknownNJ.comDead fish create a big stink as they rot in the waters off this Jersey Shore community
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9/22/2022200WhalesPilot WhalesAustraliaTasmaniaUnknownUnknownCNN32 whales rescued after around 200 die in mass stranding in Australia
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9/21/2022DozensFishCrappie / Large Mouth BssUSASouth CarolinaLymanUnknownUnknown7 News WSPA.comSCDNR investigates fish kill on Middle Tyger River
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9/16/2022DozensFishUSAIndianaNew PalestineAlgaeRed Algae / Thermal InversionGreenfield ReporterCounty officials say fish kills are rare but do happen
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9/15/2022>12WhalesSperm WhalesAustraliaTasmaniaUnknownUnknownCNNHundreds of whales stranded on Australian shore
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9/15/20228,818 lbs / 4,000 kgFishIndiaKarnatakaBengaluruPollutionSewage flowHindustan TimesSewage flow causes fish kill in Bengaluru's Haralur lake
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8/30/2022"Uncountable"FishUSACaliforniaSan FranciscoAlgaeRed Tide / Algal bloomThe New York TimesToxic Red Tide Kills ‘Uncountable’ Numbers of Fish in the Bay Area
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8/24/2022440,925 lbs / 200,000 kg FishGermany / PolandOder RiverUnknownPossible algal bloom. Germany says "elevated pesticide levels and increased salinity of water"EuronewsOder river fish die-off remains a mystery as new details emerge
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8/22/2022100FishUSAGeorgiaFlat CreekPollutionSoybean spillFox NewsMass fish deaths found in Georgia creek following soybean spill
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8/8/2022ThousandsFishSalmon, Trout, SuckerfishUSACaliforniaKlamath RiverMcKinney Fire - burned soil, rocks and downed timber fell into the river, and turned into a plume of brown “sludge” that made its way downriverThe New York TimesCalifornia Fire and Floods Turn a River to ‘Sludge,’ Killing Thousands of Fish
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7/28/2022>2,500FishBrown TroutUSAMinnesotaLewistonUnknownPossibly pollution seeping into streams after rainfallKARE11Fish kill in Minnesota river tops 2,500; state confirms deaths 'did not occur naturally'
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7/7/2022ThousandsFishAnchoviesUSACaliforniaMarin CountyOxygenAfter marine heat wave ended in 2016, anchovy population explosion, anchovies chased to shallow waters and ran out of oxygenThe New York TimesFirst, the Fish Fell From the Sky. Then They Washed Ashore.
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2/22/2022ThousandsFishAnchovies / SardinesChileColiumo peninsulaOxygenLow oxygen levels in deeper waters, according to some locals, could be the cause of the deaths, forcing fish to migrate closer to the shore in quest of oxygenRepublicWorld.comChile: Thousands Of Dead Anchovies And Sardines Wash Ashore On Beach
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2/1/2022ThousandsCrabs/LobstersUnited KingdomEnglandUnknownPossibly pyridine pollutionNew ScientistWhat’s causing a mass die-off of crabs on the UK coast?
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2021
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10/1/2021Tens of ThousandsCrabs/LobstersUnited KingdomEnglandUnknownPossibly pyridine pollutionNew ScientistWhat’s causing a mass die-off of crabs on the UK coast?
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2020
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9/23/2020380WhalesPilot WhalesAustraliaTasmaniaUnknownUnknownThe Guardian380 whales dead in worst mass stranding in Australia's historyDr Karen Stockin, an associate professor at Massey University in New Zealand, is an expert on whale and dolphin strandings "“It’s fair to say this will probably rank third or fourth globally [in terms of the numbers of stranded animals].”
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2019
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2018
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20178/28/2017ThousandsFishWhitebait / Pilchards / Sand EelsUKEnglandSt. AustellUnknownUnknownCornwall LiveThousands of tiny fish have been mysteriously washing up on Crinnis Beach in St Austell
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8/23/2017DozensFishMulletUKEnglandFalmouthOxygenA dramatic change in oxygen levels could be responsibleThe PacketUnknown contaminants likely to blame for dead fish at Swanpool: UPDATE
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8/9/2017HundredsBirdsShearwatersUSALong Island / New EnglandUnknownUnknown - Starvation due to toxic algae?Eco RI NewsDead Seabirds Washing Ashore on New England Beaches
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6/19/2017HundredsFishCatfish / Crappie / WalleyeUSAMissouriLake of the OzarksDiseaseThe Missouri Department of Conservation is attributing the kill to a naturally occurring fish disease.LakeExpoFISH KILL: Biologists Explain Why Fish Are Dead By The Hundreds At Lake Of The Ozarks
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6/14/2017DozensFish / CrabsUSANew YorkStaten IslandUnknownUnknownSILive.comDead fish and crabs wash up on shore of Wolfe's Pond Park
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6/12/2017ThousandsFishMenhadenUSATexasMatagordaChron.Thousands of fish wash up dead in river channel in Matagorda, Texas
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6/5/2017ThousandsFishAnchovies & other bigger game fishUSAWashingtonPuget SoundThe hot weather last weekend prompted the fish to swim closer to the shore to feed on plankton. When the tide went out, the anchovies became trapped and died from a lack of oxygen.The Weather ChannelHuge Fish Die-Off in Washington's Puget Sound Blamed on Hot Weather
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5/2/2017ThousandsFishSilver CarpUSATennesseeKentucky and Barkley lakesBecause of malnutrition, the fish eventually succumb to secondary stressors such as bacterial infections, which their immune systems would normally fight off.The TennesseanStinky, rotting fish are polluting Kentucky and Barkley lakes
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2/15/2017ThousandsFishSardinesCosta RicaGulf of NicoyaUnknownUnknown. The report said it is unlikely that the phenomenon was caused by chemical poisoning or that it has anything to do with warmer water temperatures in the Gulf of Nicoya, since a single species appears to have been affected.The Tico TimesThousands of dead fish wash up from Gulf of Nicoya
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20168/24/2016ThousandsFishUSANew JerseyKeansburgOxygen"Warmer water has a lower oxygen saturation. What that really means is that warm water holds less oxygen. Second, most animals and bacteria in the ocean are ‘cold blooded’ and their metabolic activity is related to temperature. When it is warmer, their basic metabolic rate goes up and they need more oxygen,”New Jersey 101.5Where will Keansburg take thousands of dead fish? Same place they buried whale
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2015
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6/1/201540,000,000TreesMangrovesAustraliaGulf of CarpentariaMoon WobbleMoon wobble and possibly El NinoSmithsonian MagazineWorld’s Largest Mangrove Die-Off Was Likely Aided by the MoonWorld's largest
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20147/30/2014ThousandsFishAnchoviesUSAOregonSeasideOxygenAn upwell in ocean nutrients that allowed for an expansion of phytoplankton, which in turn reduced oxygen levels and turned the water more acidic than normalReutersDead anchovies delight sea birds, disgust Oregon beach town
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201310/22/2013Tens of ThousandsFishAnchoviesUSACaliforniaSanta CruzOxygenAnchovies chased to shallow waters and ran out of oxygenThe Mercury NewsFish take wrong turn, foul Santa Cruz harbor
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2012
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2011
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