TIL that octopuses have three hearts and blue blood sciencefocus.com Submitted by real_aurora_cole t3_1249tqr on March 28, 2023 at 2:33 AM in todayilearned 26 comments 156
GonnaGoFar t1_je03ftg wrote on March 28, 2023 at 1:33 PM Reply to comment by gilgobeachslayer in TIL that octopuses have three hearts and blue blood by real_aurora_cole Anatomical diagrams have arteries in red and veins in blue for easy identification. Permalink Parent 5
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