• otter@lemmy.dbzer0.com
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        22 hours ago

        Human blood is.

        Cephalopod blood is blue from the copper-rich hemocyanin instead of hemoglobin, which helps them endure the incredible cold of the abyss.

        Also, the Prasinohaema skinks of the island of New Guinea are green-blooded from the high concentrations of biliverdin, a toxic green bile pigment that outshines their hemoglobins’ iron. 🤓