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the claim

Bull sharks live in freshwater rivers and lakes for extended periods.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that bull sharks live in freshwater rivers and lakes for extended periods?

Yes. A shark field guide states bull sharks are the only living sharks that can live in freshwater for extended periods, and a peer-reviewed study suggests one large specimen had a longer freshwater residence than others reported. Other sources confirm bull sharks inhabit rivers and lakes but do not address duration.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 8
In Search of Bull Sharks
2015
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In Search of Bull Sharks. (2015). ebookcentral.proquest.com. https://ebookcentral.proquest.com/lib/kxp/detail.action?docID=5141232

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More for · 7
The Audubon Society Encyclopedia of Animal Life
1982
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Society, N. A. (1982). The Audubon Society Encyclopedia of Animal Life. books.google.com. http://books.google.com/books?id=kw06AQAAIAAJ&dq=Bull+sharks+live+in+freshwater+rivers+and+lakes+for+extended+periods.&hl=&as_pt=BOOKS&source=gbs_api

Bull shark - Wikipedia
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Bull shark - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Bull_shark

An Illustrated Pocket Guide to the Sharks of the World
2014
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Ebert, D. A., Fowler, S., & Fowler, S. L. (2014). An Illustrated Pocket Guide to the Sharks of the World. books.google.com. http://books.google.com/books?id=RZG3DwAAQBAJ&dq=Bull+sharks+live+in+freshwater+rivers+and+lakes+for+extended+periods.&hl=&as_pt=BOOKS&source=gbs_api

Comprehensive analysis of genes contributing to euryhalinity in the bull shark, Carcharhinus leucas ; Na+-Cl− co-transporter is one of the key renal factors up-regulated in acclimation to low-salinity environment in bull sharks, but not in houndsharks, Triakis scyllium
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Comprehensive analysis of genes contributing to euryhalinity in the bull shark, Carcharhinus leucas ; Na+-Cl− co-transporter is one of the key renal factors up-regulated in acclimation to low-salinity environment in bull sharks, but not in houndsharks, Triakis scyllium. (n.d.). cir.nii.ac.jp. https://doi.org/10.1242/jeb.201780

Branchial osmoregulation in the euryhaline bull shark, Carcharhinus leucas : a molecular analysis of ion transporters
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Branchial osmoregulation in the euryhaline bull shark, Carcharhinus leucas : a molecular analysis of ion transporters. (n.d.). cir.nii.ac.jp. https://doi.org/10.1242/jeb.058156

Comprehensive analysis of genes contributing to euryhalinity in the bull shark, Carcharhinus leucas; Na+-Cl- co-transporter is one of the key renal factors upregulated in acclimation to low-salinity environment.
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Comprehensive analysis of genes contributing to euryhalinity in the bull shark, Carcharhinus leucas; Na+-Cl- co-transporter is one of the key renal factors upregulated in acclimation to low-salinity environment.. (n.d.). cir.nii.ac.jp. https://cir.nii.ac.jp/crid/1872560818548407936

The bull shark, Carcharhinus feucus (Valenciennes, 1841), from the Usumacinta River, Tabasco, Mexico, with notes on its serum composition and osmolarity
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The bull shark, Carcharhinus feucus (Valenciennes, 1841), from the Usumacinta River, Tabasco, Mexico, with notes on its serum composition and osmolarity. (n.d.). cir.nii.ac.jp. https://doi.org/10.7773/cm.v24i2.746

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