Octopus is a kind of marine life, and researchers have found many interesting phenomena in the process of studying them, such as their blood. Some people think that octopuses don't have blood, but that's not true. Octopuses also have blood, but it's different from the blood of humans and many other animals. When we think about blood, we may subconsciously think that blood is red. In fact, the octopus's blood is not red, but blue. This is a strange phenomenon for humans, so the researchers continued to study octopus blood in depth, and compared it with the red blood of other animals.
As mentioned above, when studying octopus blood, researchers found a strange phenomenon that octopus blood is blue. After a comparative study, it was found that the blue color of octopus blood was mainly due to hemocyanin. This material refers to a special protein that contains copper, so when transporting oxygen, they use copper. When copper and oxygen combine, the color of the product is blue, so the octopus's blood is blue as a whole. There is no hemoglobin in their blood, so the blood is not red. This hemocyanin is very important for octopuses to survive extreme temperature conditions.
The blood of humans and many other animals is red because it contains many metals, such as iron, and when iron combines with oxygen, the result is red. In addition to human beings, there are many animals whose blood is red, even earthworms, flies and other animals whose blood is red.
