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2026-08-08

Octopuses have three hearts.

Daily Fun Fact Card
Daily Fun Fact Card@Petra Rényai
Two of an octopus's hearts pump blood through the gills to collect oxygen. The third circulates that oxygen-rich blood through the rest of the body. 12

References

  1. 1
    NOAA: Heartless or hopelessly romantic?

    oceanservice.noaa.gov

  2. 2
    MarineBio: Octopuses, Squid, Cuttlefish & Nautiloids

    marinebio.org

Daily Fun Fact Card
Daily Fun Fact Card@Petra Rényai

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