The blackfin icefish, an Antarctic species also known as the Scotia Sea icefish, has been discovered to have white blood, making it the only known vertebrate on Earth without red blood, according to Quanta magazine(Opens in a new window).
Brachiopods have black blood. Octopuses have a copper-based blood called hemocyanin that can absorb all colors except blue, which it reflects, hence making the octopus' blood appear blue.
In Animal Kingdom, Blood Comes in a Rainbow of Colors. The Antarctic octopus, pictured, has a copper-rich protein in its blood that turns the vital fluid blue. Please be respectful of copyright.
The white blood cells (WBCs) are some of the components of vertebrates' immune systems. In some orders of mammals, the body mass of the animal correlates positively with the number of WBCs at the interspecific level.
Prasinohaema prehensicauda, found in New Guinea, is a green-blooded lizard with high concentrations of biliverdin, a toxic green bile pigment. Green blood is one of the most unusual characteristics in the animal kingdom—and the hallmark of a group of lizards in New Guinea.
One group of segmented marine worms has pink blood. This is because the molecule that carries the oxygen is a type of blood pigment, known as hemerythrin, which is described as pink or purple.
Sea cucumbers have yellow blood due to a high concentration of a yellow vanadium-based pigment called vanabin. Some members of the phylum Annelida (segmented worms and leeches) have a greenish respiratory pigment called chlorocruorin.
Indeed, most mammal, fish, reptile, amphibian, and bird blood is red because of hemoglobin, whose protein is made of hemes, or iron-containing molecules that fuse with oxygen.
Vertebrates, including mammals, birds, amphibians, reptiles and fish also have red blood because they too use hemoglobin as an oxygen transport protein.
Snails, spiders and octopi have something in common- they all have blue blood! We're not talking in the sense of royalty, these creatures literally have blue blood. So why is their blood blue and ours red? One of the purposes of blood is to carry oxygen around the body.
Did anyone know that some animals have blue blood, especially when it is exposed to oxygen? Can you guess what animals might have blue blood? Lobsters, crabs, pillbugs, shrimp, octopus, crayfish, scallops, barnacles, snails, small worms (except earthworms), clams, squid, slugs, mussels, horseshoe crabs, most spiders.
Peanut worms, duck leeches, and bristle worms, all of which live in the ocean, use the protein hemerythrin to carry oxygen in the blood. Without oxygen, their blood is clear in color. When it carries oxygen, it turns purple.
Vampire Bat
This type of bat, of which there are three species, is the only known mammal whose diet is solely based on blood. Although livestock, birds, and reptiles are its typical targets, humans are occasionally its prey.
Octopuses, lobsters, and horseshoe crabs use hemocyanin, which has copper instead of iron, and is blue instead of red—that's why these creatures bleed blue. Other related molecules are responsible for the violet blood of some marine worms, and the green blood of leeches.
All mammals and birds are capable of generating this internal heat and are classed as homoiotherms (ho-MOY-ah-therms), or warm-blooded animals.
Spiders, like most arthropods, have an open circulatory system, i.e., they do not have true blood, or veins which transport it. Rather, their bodies are filled with haemolymph, which is pumped through arteries by a heart into spaces called sinuses surrounding their internal organs.
Dragon's blood is a surprising red made from the resin of the Daemonorops draco plant and other rattan palms. This exotic red was used by the early Greeks, Romans and Arabs in art and medicine.
Dragon's blood is a red resin produced from a variety of trees growing in South East Asia, East Africa, Canary Islands, West Indies and also in South America. The constituents of this resin are numerous and differ according to their source.
Whereas most vertebrates have crimson red blood derived from the ferrous form of heme, these lizards have lime green–colored blood, resulting in bright green coloration of their muscles, bones, tongue, and mucosal tissues (1).
The short answer is ants have something similar to blood, but scientists call it “haemolymph”. It is yellowish or greenish. In vertebrates (animals with backbones such as humans, cats, dogs, snakes, birds and frogs) blood's main job is to move important things around the body.
Octopuses have blue blood, three hearts and a doughnut-shaped brain. But these aren't even the most unusual things about them!
Why do crabs have blue blood and humans have red blood ?
Some spiders, horseshoe crabs, and scorpions also have blue blood.
What color is a lobster's blood? Lobster blood is colorless. When exposed to oxygen, it develops a bluish color.
Prasinohaema (Greek: "green blood") is a genus of skinks characterized by having green blood.