Why is octopus blood BLUE — the metal hiding in its veins 🐙
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Why is octopus blood BLUE — the metal hiding in its veins 🐙
Octopus blood isn't red — it's blue, because they carry oxygen on copper instead of iron. Oxygen latching onto that copper turns the blood vivid blue, and it works better than ours in freezing, oxygen-poor deep water. Would you trade your red blood for cold-proof blue blood? Subscribe for more wild facts every day. #shorts #nature #science # ...
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