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2 October, 10:52

Why do octopuses have 3 hearts?

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  1. 2 October, 12:46
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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.
  2. 2 October, 14:01
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    Two branchial hearts pump blood through each of the two gill, while the third pumps blood through the body.
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