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SquIds. 122 Oceans Sciences. LOCATIONS. Squids are generally found all over the world. A great number of them are located in the pacific ocean. . BASIS.
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SquIds 122 Oceans Sciences
LOCATIONS Squids are generally found all over the world. A great number of them are located in the pacific ocean.
BASIS Squids are great examples of cephalopods, where their heads, tentacles and eyes are developed. They also have eight short arms, near their mouth and small fins near the ends of their tails.
NERVE IMPULSES Chromatophores are connected to the nervous system, and their size is determined by muscular contractions. Many of these creatures have special pigment cells called chromatophores in their skin. By controlling the size of the cells they can vary their color and even create changing patterns.
CIRCULATORY SYSTEM With a closed circulatory system, the squid has two branchial hearts. These two hearts are located at the base of the gills which send unoxygenated blood through the gills. The third ventricular heart then pumps this oxygenated blood throughout the body.
HABITAT Squids are quite shy creatures, and tend to live in deep waters ranging from 1000 to 2000 ft.
DIET Squid eat fish, crustaceans for instance, shrimp, and other squid.
REPRODUCTION Most squid have a sac containing spermatophores that it places in the mantle of the female squid where the sperm is released into the mantle cavity.
DIGESTIVE SYSTEM DIGESTIVE SYSTEM When food is taken up by cells lining the digestive glands arising from the stomach, and then is passed into the blood. Undigested materials are compressed and packaged, then discharged through the anus into the mantle cavity and are carried away in the water currents.
http://www.buzzle.com/articles/squids-habitat.html • http://tolweb.org/treehouses/?treehouse_id=4225