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the claim

Some shark species, such as bull sharks, can survive in freshwater.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 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 some shark species, such as bull sharks, can survive in freshwater?

Yes. A reference article states bull sharks are euryhaline and can thrive in both salt and fresh water, and a peer-reviewed study notes bull sharks inhabit both seawater and freshwater environments. These sources confirm the claim's example but do not survey other shark species.

Verdict: SUPPORTED · 3 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 · 3
Bull shark
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Bull shark. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Bull_shark

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More for · 2
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

Seasonal Distribution and Habitat Associations of Bull Sharks in the Indian River Lagoon, Florida: A 30‐Year Synthesis
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Seasonal Distribution and Habitat Associations of Bull Sharks in the Indian River Lagoon, Florida: A 30‐Year Synthesis. (n.d.). cir.nii.ac.jp. https://doi.org/10.1080/00028487.2011.618352

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