Red goo? My circulatory system uses a copper based hemoglobin analogue, you insensitive clod :-) (arthropod blood) https://en.wikipedia.org/wiki/Hemocyanin h

Red goo? My circulatory system uses a copper based hemoglobin analogue, you insensitive clod :-) (arthropod blood) https://en.wikipedia.org/wiki/Hemocyanin https://en.wikipedia.org/wiki/Hemocyanin