Octopus Trivia:Why is the blood of the octopus blue?

The color of blood is determined by the substance elements contained in blood cell proteins. The blood of…

The color of blood is determined by the substance elements contained in blood cell proteins. The blood of humans and vertebrates is red because the blood contains a large amount of iron-containing hemoglobin.

Octopus Trivia:Why is the blood of the octopus blue?
Octopus Trivia:Why is the blood of the octopus blue?

The octopus contains a blue pigment protein, which is what we usually call copper-containing hemocyanin. The function of this hemocyanin is to transport oxygen. When the octopus moves, oxygen enters the octopus’ blood vessels and combines with this hemocyanin, thus forming blue blood.

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