First of all, they are all mollusks. Octopus is a mollusk phylum cephalopods eight carpal order animals, commonly known as octopus. Cuttlefish and squid is a kind of fish, different regions called different, they are mollusks phylum cephalopods squid order animals. Squid is a species of cuttlefish or squid.

1, the body structure is different: octopus is eight wrists, squid, cuttlefish are ten wrists. Octopus body soft, squid growth has cartilage, cuttlefish have hard bone.

2, the appearance of different shapes: octopus I its body is sac-like, looks like a pill; squid body narrow, as if the tube, cross-section for the circle; cuttlefish body is more flat, very wide. Cuttlefish has a long round head, squid is long pointed, octopus is short round.

3, different habits: octopus generally use the wrist in the sucker along the bottom crawling, movement is very slow; squid, cuttlefish is in the sea fast swimming. Octopus is a nocturnal animal, very sensitive to light, like to stay in the dark environment; squid, cuttlefish like light.

4, different ways to eat: octopus can be eaten raw or cooked, and raw food is particularly good; squid, cuttlefish must be cooked before eating, because there is a peptide composition in its body, if it is not cooked through that is eaten, often will make the diners gastrointestinal motility disorders, resulting in abdominal discomfort. In addition, squid and other aquatic products are cold in nature, the spleen and stomach cold people should also be eaten sparingly. p>Squid nutrition:

1, squid is rich in calcium, phosphorus, iron elements, conducive to bone development and hematopoiesis, can effectively treat anemia;

2, squid in addition to being rich in protein and amino acids needed by the human body, squid also contains a large number of oxalic acid, which can inhibit blood cholesterol levels, relieve fatigue, restore eyesight, and improve liver function;

3, its contained Peptide and selenium have anti-virus, anti-ray effect;

4, Professor Wang Cunxin of the Institute of Oceanography of the Chinese Academy of Sciences, said that cholesterol has a low-density and high-density, squid cholesterol to high-density is dominated by the human body is favorable and harmless. Squid body fat and livestock, poultry fat structure is significantly different;

5, containing protein, omega-3 fatty acids, copper, zinc, B vitamins and iodine. B vitamins help relieve migraine, phosphorus helps calcium absorption. 100 grams of squid only 70 kcal energy. Note: Don't eat more than a fistful of squid a day, and it's best not to deep-fry it.

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