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10 April, 18:40

Why do octopuses have 3 hearts?

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  1. 10 April, 18:44
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    Two branchial hearts pump blood through each of the two gill, while the third pumps blood through the body.
  2. 10 April, 18:54
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    Two branchial hearts pump blood through each of the two gills, while the third is a systemic heart that pumps blood through the body. Octopus blood contains the copper-rich protein hemocyanin for transporting oxygen.
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