Why is the color of lobsters blue ?
As it is known, it gives blood pigments it carries in its color. Blood containing hemoglobin (in vertebrates) and the pigment of Hemoerythrin becomes red in color. There is an iron element in their structure. The blood containing the hemocyanin pigment (such as some arthropods, molluscs) becomes blue. In their structure, there is a copper element instead of iron. In the structure of lobsters, there is a copper element instead of an iron element. For this reason, the blood of lobsters becomes blue.