Squid

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Squid

Squid (/skwɪd/; from Latin: squid, meaning 'cuttlefish') are cephalopods of the two orders Myopsida and Oegopsida, which were formerly regarded as two suborders of the order Teuthida, however recent research shows Myopsida and Oegopsida are not monophyletic. Squids are among the most intelligent and most mobile of all invertebrates.

Etymology

The term "squid" was first used in English in the early 17th century to refer to these creatures. It is derived from the Latin squid, meaning 'cuttlefish'.

Anatomy

Squids have a soft body that can change shape rapidly, enabling them to squeeze through small gaps. They are strong swimmers and certain species can 'fly' for short distances out of the water. The interior of a squid's body is divided into a mantle cavity, which contains the gills, and a visceral mass, which contains the digestive and reproductive organs.

Behavior

Squids are known for their speed and agility in the water. They are also known for their ability to change color and pattern, which they use for communication and camouflage.

Related Terms

  • Cephalopod: A member of the molluscan class Cephalopoda, which includes squids, octopuses, and cuttlefish.
  • Mantle (mollusk): The dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself in squids.
  • Ink sac: An anatomical feature that is used to produce the defensive ink cloud that squids and other cephalopods release when threatened.
  • Beak (mollusk): The hard, often dark-colored, structure that forms the mouth of squids and other cephalopods.

External links

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