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Squids

Squids. Charity Sonier.

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Squids

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  1. Squids Charity Sonier

  2. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles. Squid are strong swimmers and certain species can 'fly' for short distances out of the water.

  3. Anatomy

  4. The Vampire squid At a maximum of one foot in total length, the vampire squid is no threat to humans. Its body varies in color between velvety jet-black and pale reddish, depending on location and lighting conditions. A webbing of skin connects its eight arms, each lined with rows of fleshy spines; the inside of this "cloak" is black. Only the farthest part of the arms have suckers. Its eyes, which appear red or blue, depending on lighting, are proportionately the largest in the animal kingdom at 1 inch in diameter

  5. Classification Kingdom:Animalia Phylum:Mollusca Class:Cephalopoda Subclass:Coleoidea Superorder:Octopodiformes Order:Vampyromorphida Suborder:Vampyromorphina Family:Vampyroteuthidae Genus:Vampyroteuthis Species:V. infernalis

  6. General Information The vampire squid (Vampyroteuthis infernalis) is a small, deep-sea cephalopod found throughout the temperate and tropical oceans of the world. Unique retractile sensory filaments justify the Vampire Squid's placement in its own order: Vampyromorphida (formerly Vampyromorpha), which shares similarities with both squid and octopuses.

  7. Habitat and Adaptions The Vampire squid is an extreme example of a deep sea cephalopod. Their hemocyanin binds and transports oxygen more efficiently than in other cephalopods, aided by gills with especially large surface area along with other adaptations, like a low metabolic rate. This allows them to live within depths that few other organisms can bear, known as the “Oxygen minimum zone” 600-900 feet underneath the ocean’s surface.

  8. Behaviour The vampire Squid is capable of swimming very quickly, but because of their low metabolic rate they have stamina issues. Because of this, they have developed different methods of predator avoidance such as, they are able tot urn themselves inside out in order to look much larger, and they have glowing pigments at the end of each arm distracting from any critical parts of the body. http://www.youtube.com/watch?v=IWAnliNc6wk&feature=related

  9. Digestive System Like all cephalopods, squid have complex digestive systems. The muscular stomach is found roughly in the midpoint of the body. From there, the bolus moves into the caecum for digestion. The caecum, a long, white organ, is found next to the ovary or testis. In mature squid, more priority is given to reproduction such that the stomach and caecum often shrivel up during the later life stages. Finally, food goes to the liver (or digestive gland), found at the bottom end, for absorption. Solid waste is passed out of the rectum.

  10. Did you know? It is a unique member of the cephalopod family in that it shares similarities with both squid and octopuses. In fact, it was originally and mistakenly identified as an octopus by researchers in 1903

  11. Bibliography http://www.seasky.org/deep-sea/vampire-squid.html http://en.wikipedia.org/wiki/Squids http://www.youtube.com/watch?v=IWAnliNc6wk&feature=related http://en.wikipedia.org/wiki/Vampire_squid

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