why octopus blood is blue?
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Society elites aren't the only blue bloods. Several species of octopus have blue, rather than red, fluid running through their veins. The blue comes from a copper-rich protein called hemocyanin, which carries oxygen from the lungs to the bloodstream and then to the cells of the octopus's body.
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The blood going out to your body in the arteries is full of oxygen, which makes the blood bright red. But the blood coming back from your body in the veins is darker because your body parts have used up the oxygen in the blood. That's why veins look purple or blue.
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The Reason for Blood Color In humans, oxygenated blood is bright red and deoxygenated blood is dark red or maroon. ... Animals may have red, blue, green, yellow, orange, violet, or colorless blood. Some have hemoglobin like us, some have different respiratory pigments, and some have no respiratory pigments at all.
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Toxicity. The blue-ringed octopus, despite its small size, carries enough venom to kill 26 adult humans within minutes. Their bites are tiny and often painless, with many victims not realizing they have been envenomated until respiratory depression and paralysis begins. No blue-ringed octopus antivenom is available.
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Ink is mostly made from a dark pigment called melanin, which is suspended in thick mucus along with small amounts of other things such as amino acids. Squid ink is blue-black in colour, while cuttlefish ink is brown and octopus ink is black. To make ink, squid have special organs called ink glands and ink sacs.
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An octopus has three hearts, nine brains, and blue blood. Two hearts pump blood to the gills, while a third circulates it to the rest of the body. The nervous system includes a central brain and a large ganglion at the base of each arm which controls movement.
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Octopuses are boneless creatures. ... An octopus has three hearts, nine brains, and blue blood. Two hearts pump blood to the gills, while a third circulates it to the rest of the body.
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The blue-ringed octopus hunts small crabs and shrimp during the day, but it will eat bivalves and small fish if it can catch them. The octopus pounces upon its prey, using its tentacles to pull its catch toward its mouth.
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The octopus gills are located inside the mantle cavity and exit to the outside of the body. The oxygen requirements of octopus are greater than those required by other mollusks and fish. Octopuses have three hearts, two of which pump blood across the two gills, where oxygen exchange takes place.
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Isopods ("woodlice", "pill bugs", "slaters", "roly polies", etc.) ... The crystaline arrangement of virions in advanced infection causes the isopod's exoskeleton to become iridescent blue or bluish-purple prior to premature mortality, making presence of the virus easy to detect.
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Sometimes blood can look blue through our skin. Maybe you've heard that blood is blue in our veins because when headed back to the lungs, it lacks oxygen. But this is wrong; human blood is never blue. The bluish color of veins is only an optical illusion.
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Three defensive mechanisms are typical of octopuses: ink sacs, camouflage, and autotomising limbs. Most octopuses can eject a thick blackish ink in a large cloud to aid in escaping from predators. ... A few species, such as the Mimic Octopus, have a fourth defense mechanism.
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Blue-ringed octopuses, Hapalochlaena maculosa, can be found only in the temperate waters of southern Australia, from southern Western Australia to eastern Victoria at depths ranging from 0-50 m.
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Why are veins blue? The veins themselves are not blue, but are mostly colorless. It is the blood in the veins that gives them color. Furthermore, the blood in human veins is also not blue.
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Both octopuses and squids are related to snails and other molluscs. Unlike snails, octopuses no longer have any remnant of a shell. Squids possess a stiff structure known as a pen that acts as a flexible backbone. Both squids and octopuses have blue blood.
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As a gas, oxygen is clear. But as a liquid, it's pale blue.
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A purple or blue tongue could be a sign that your blood isn't delivering enough oxygen to your body's tissues. Or, that oxygen-depleted blood — which is dark red, rather than bright red — is circulating through your arteries. The blueish discoloration that occurs due to this is called cyanosis.