Prior to photography, humans tried to draw the picture of an devilfish. Yet no sketch could portray the actual features justifiably. The approximately common octopus, octopus vulgaris, is widely distributed, being found in tropical and temperate seas throughout the world. In the west Atlantic it can be found along the coast from computerized axial tomography in the United States southerly to Brazil. It is found around the south and southwest coast of England and southward as far as Africa. The common octopus is fished in the Mediterranean, where it was observed and recorded by Aristotle in the 4th century B.C. (Ed. Burton 263). The most common of the octopi sort out take on been spotted all around the globe, let entirely the other types that argon included in the category of mollusks.
The octopus also belongs to a sub-species of mollusks called the cephalopods. Cephalopod means head-foot, in file name extension to the circle of arms or tentacles surrounding the head, which is well delineate and bears the two prominent eyes. The head is hidden behind the bases of the arms. A mantle of thick skin and muscle surrounds a squat, dome-shaped or sometimes roughly egg-shaped body. (Idyll 143) The body of an octopus is really complex and somewhat similar to the calamari.
When all the modern cephalopods but the nautilus discarded their external shells, they lost something in protection. entirely in exchange the octopuses and the squids-the latter especially- gained freedom of movement. Survival demanded that they hand quickness and other weapons to compensate for the loss of their armor. And the consequence has been that the cephalopods have become the fastest and most intelligent of invertebrates, and among the most successful. (Idyll 146)
Although the squid and octopus evolved together, they still differ in many ways. The squids are called decapods (ten feet), since in addition to the eight arms of the octopus they have two long tentacles, often with club-shaped ends. The body is pointed and...If you want to get a full essay, order it on our website: Orderessay
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