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the claim

Most shark species give birth to live young rather than laying eggs.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 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 most shark species give birth to live young rather than laying eggs?

Yes. A Natural History Museum reference states that of over 500 shark species, the majority give birth to live young and the remainder lay eggs, and NOAA Fisheries likewise reports that many sharks are viviparous while the remainder are oviparous. Additional peer-reviewed sources confirm live birth in angel sharks and blue sharks, though those cover only individual species.

Verdict: SUPPORTED · 5 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 · 5
Angel sharks (Squatinidae): A review of biological knowledge and exploitation.
2021
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Ellis, J. R., Barker, J., Phillips, S. R. M., Meyers, E. K. M., & Heupel, M. (2021). Angel sharks (Squatinidae): A review of biological knowledge and exploitation.. doi.org. https://doi.org/10.1111/jfb.14613

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More for · 4
Do sharks lay eggs? | Natural History Museum
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Do sharks lay eggs? | Natural History Museum. (n.d.). nhm.ac.uk. https://www.nhm.ac.uk/discover/do-sharks-lay-eggs.html

Laying eggs vs giving birth: is there a connection with internal vs. external ears?
2013
Get citation
Laying eggs vs giving birth: is there a connection with internal vs. external ears?. (2013). biology.stackexchange.com. https://biology.stackexchange.com/questions/9506/laying-eggs-vs-giving-birth-is-there-a-connection-with-internal-vs-external-ea

Eight Surprising Shark Facts | NOAA FisheriesLock
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Eight Surprising Shark Facts | NOAA FisheriesLock. (n.d.). fisheries.noaa.gov. https://www.fisheries.noaa.gov/feature-story/eight-surprising-shark-facts

Seasonal migrations of pregnant blue sharks Prionace glauca in the northwestern Pacific
Get citation
Seasonal migrations of pregnant blue sharks Prionace glauca in the northwestern Pacific. (n.d.). cir.nii.ac.jp. https://doi.org/10.3354/meps13557

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