Why does an octopus have three hearts and blue blood?
Octopus blood carries oxygen on copper, which turns blue and outperforms iron in cold water. Three hearts move it: one per gill, plus one for the body.
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Octopus blood carries oxygen on copper, which turns blue and outperforms iron in cold water. Three hearts move it: one per gill, plus one for the body.
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No skeleton, half its neurons in its arms, skin it can repaint in a fraction of a second, and a lineage that split from ours 750 million years...
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