blue blood. This interesting characteristic is a direct outcome of the organism's evolutionary adaptations to live in the ...

Here are four animals that managed to persist through ... They also have a unique and highly effective immune system. Their blue blood contains a clotting agent, Limulus Amebocyte Lysate (LAL ...

If the blood (called haemolymph in invertebrates) becomes deoxygenated - when the animal dies, for example - it loses its blue colour and turns clear instead. An octopus's three hearts have slightly ...