Earthworms have five hearts.

the verdict

REFUTED

the evidence says no

Recorded sources

0 sources for · 1 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 Earthworms have five hearts?

No. One peer-reviewed protocol describes the earthworm's circulatory anatomy as having five pairs of pseudo hearts, indicating ten aortic arches rather than five hearts. The remaining retrieved items concern earthworm taxonomy, ecology or vermicomposting and do not address heart count.

Verdict: REFUTED · 0 sources for, 1 against · Last checked 3 Oct 2026

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

Evidence against · 1

Earthworm, Lumbricus Terrestris: A Novel Microinjection Vasculature In vivo Invertebrate Model

2021

Get citation

Earthworm, Lumbricus Terrestris: A Novel Microinjection Vasculature In vivo Invertebrate Model. (2021). doi.org. https://doi.org/10.3791/62449

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