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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.
There are some animals with purple blood such as brachiopods, peanut worms, and other marine invertebrates.
BATON ROUGE – Green blood is one of the most unusual characteristics in the animal kingdom, but it's the hallmark of a group of lizards in New Guinea. Prasinohaema are green-blooded skinks, or a type of lizard.
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. A few species of segmented worms don't have any oxygen-carrying molecules at all, so their blood is colourless.
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.
Blue blood is found in octopuses and horseshoe crabs. This is due to the fact that hemocyanin, the protein that transports oxygen in their blood, is blue. Octopuses have three hearts, which is due in part to their blue blood.
Crustaceans, squid, and octopuses have a blood color of blue.
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.
All mammals and birds are capable of generating this internal heat and are classed as homoiotherms (ho-MOY-ah-therms), or warm-blooded animals. Normal temperatures for mammals range from 97° F to 104° F. Most birds have a normal temperature between 106° F and 109° F.
Chimpanzee and Old World monkey blood group systems
Two complex chimpanzee blood group systems, V-A-B-D and R-C-E-F systems, proved to be counterparts of the human MNS and Rh blood group systems, respectively.
Earthworms are invertebrates, which means they do not have a backbone. In fact, they don't have any kind of bones, legs, eyes, or teeth.
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.
Their food source is the blood of other animals, a dietary trait called hematophagy. Three extant bat species feed solely on blood: the common vampire bat (Desmodus rotundus), the hairy-legged vampire bat (Diphylla ecaudata), and the white-winged vampire bat (Diaemus youngi).
Platypus are monotremes - a tiny group of mammals able to both lay eggs and produce milk.
Do ants have blood? The answer to this question is yes; ants have a fluid that circulates throughout their bodies. This fluid, known as hemolymph, shares many similarities with human blood. Hemolymph carries nutrients to the tissues in an ant's body and also helps remove waste products from the cells.
Do spiders bleed? No spiders cannot bleed because they do not have true blood. Spiders used a circulatory fluid called haemolymph instead of blood.
Cockroaches do, in fact, contain blood. Haemolymph, which is found in the hemocoel, is their blood. Their circulatory system is open, with visceral organs bathing in a blood-filled open chamber termed a hemocoel. Haemocytes and colorless plasma make up the hemolymph, which is colorless.
Sea Stars Do Not Have Blood
This is a sort of trap door called a madreporite, often visible as a light-colored spot on the top of the starfish. From the madreporite, seawater moves into the sea star's tube feet, causing the arm to extend.
While humans and many other species have red blood, due to the iron in their hemoglobin, other animals have different colored blood. Spiders (as well as horseshoe crabs and certain other arthropods) have blue blood due to the presence of copper-based hemocyanin in their blood.
The reason insect blood is usually yellowish or greenish (not red) is that insects do not have red blood cells. Unlike blood, haemolymph does not flow through blood vessels like veins, arteries and capillaries. Instead it fills the insect's main body cavity and is pushed around by its heart.
Squid blood is blue, not red as in humans. This is because squid blood contains a copper-containing compound called haemocyanin. In humans, the blood is red and contains the iron compound haemoglobin.