8 Wildlife Wonders Whose Blood Isn't Red
Horseshoe crab blood is light blue due to the presence of copper in hemocyanin, a protein used for oxygen transport
Flatworms may have different pigments in their body fluids, resulting in colorless or whitish blood depending on the species
Icefish are the only vertebrates for lacking hemoglobin, resulting in their blood appearing cloudy white
Octopus blood appears blue because of hemocyanin, a specialized biological molecule that uses copper to give the blood its distinctive color
Like octopuses, squids also have blue blood due to the presence of hemocyanin, which utilizes copper to impart the blue coloration
Sea cucumbers have yellow blood containing vanabin, a vanadium-based pigment not involved in oxygen transport like hemoglobin and hemocyanin
Inside their bodies, lobster blood is colorless; however, it turns blue when exposed to oxygen
Spiders possess blue blood due to the presence of hemocyanin, a protein that binds oxygen using copper