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Japanese flying squid
The Japanese flying squid, Japanese common squid or Pacific flying squid,〔(【引用サイトリンク】url=http://www.phadia.com/en/Allergen-information/ImmunoCAP-Allergens/Food-of-Animal-Origin/Mollusks/Pacific-Flying-Squid/ )〕 scientific name ''Todarodes pacificus'', is a squid of the family Ommastrephidae. This animal lives in the northern Pacific Ocean, in the area surrounding Japan, along the entire coast of China up to Russia, then spreading across the Bering Strait east towards the southern coast of Alaska and Canada. They tend to cluster around the central region of Vietnam.
== Description ==
Adult squid have several distinguishing features. The mantle encloses the visceral mass of the squid, and has two fins, which are not the primary method of propulsion. Instead, the squid has a siphon, a muscle which takes in water from one side, and pushes it out the other side: jet propulsion. The squid has eight arms and two tentacles with suction cups along the backs. In between the arms sits the mouth, or beak. Inside the mouth is a tooth-tongue-like appendage called the radula. Squid have ink sacs, which they use as a defense mechanism against possible predators. Squid also have three hearts.
The age of a squid can be determined on the basis of its growth rings, or statoliths, when additions are appended daily to the balance organs in the back of the squid’s head. This species of squid can weigh up to 0.5 kg. Mantle length in females can go up to 50 cm; males are smaller.〔(【引用サイトリンク】 title=FAO Fisheries & Aquaculture - Species fact sheets )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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