Biology of a Squid Essay - 577 Words

Biology of a Squid Squids are among the most varied and unique of all invertebrates. They are mollusks of the Class Cephalopod, along with the nautilus, cuttlefish, and octopus. Squids are highly evolved, and have developed a number of traits uncommon to most other mollusks. Fossil records of cephalopods have dated back the Cambrian Period (about 600 million years ago). Structurally, squids have only small variations of a basic theme common to all cephalopods. They are spherical or cigar-shaped with two fins used to stabilize movement when swimming. Ten arms are easily distinguished emerging from near the mouth Eight of these arms each have four rows of suction cups encircled by rings of chitinous (horny) hooks. These suction†¦show more content†¦Squids (and cephalopods in general) possess several unusual abilities that help them deal with their predators (which range anything from large fish to sperm whales). Their lack of an external shell allows them to squeeze into very tight places, enabling them to conveniently and easily hide from their enemies. When confronted with a dangerous animal away from hiding places, however, squids seem to have a disadvantage when compared to other mollusks with external shells. If attacked, they have no exterior protection. To counter this potential crisis, they have adapted a number of tactics. First, they are capable of temporarily altering the color of their skin, in effect camouflaging themselves. They can shift their appearance from a deep brown color, to a white, or almost transparent quality. Along with this, they are able to slightly change the texture of their skin. This form of camouflage allows the squid to take the form of rocks, seaweed, or other ocean-dwelling objects. If a hazardous foe is not fooled by camouflage, the squid can release an ink cloud. The ink cloud has a number of helpful characteristics that can ward off enemies. The cloud initially causes the nearby water to become dark and cloudy, reducing the enemys visibility and allowing the squid to escape from danger. Some deep-sea squids contain bacteria in their ink so that the cloud glows, and scares away harmful rivals.Show MoreRelatedThe Research Methods Of Internet Articles1554 Words   |  7 PagesInternet was a place where the majority of them gathered. This method of research contributed to most of the references in the final outcome. The second research method was the email interview with a marine biology professor. The research question is in the area of marine biology, and a marine biology professor would be best suited for an interview on this question. This method was chosen because it is a great primary source. Primary sources are needed in research project to make sure the informationRead MoreCamp Cimi Experience1056 Words   |  5 Pagesopportunity to night snorkel, however, if we chose not to, the counselors would either take our group to dissect a squid, or to do creatures of the night. In past years, we would have rock climbed instead, however, it was closed down for some unknown reason. Since snorkeling was too cold for me, I decided to dissect a squid. Due to the fact that my partner, Spencer, did not like to touch the squid, I ended up doing most of the work. After acclimating to the horrible smell, we then began to dissect itRead MoreThe Effect Of Nucleis In The Creation Of Star1449 Words    |  6 Pageswell as several classes of brilliant butterflies. Squid have distinct cells in their skin that lets them be able to change their color patterns for concealment and for the purpose of communication. The female squids in one class of squid might show a natural protection for evading undesirable male responsiveness and this is through distinct light-reflecting cells, these cells are able to develop the delusion of testes. The opalescent inshore squid (Doryteuthis opalescens) is a good example and isRead MoreMarine Biomes1537 Words   |  7 Pagesis insufficient for photosynthesis. Below this zone, no light penetrates through. At about 1,600 feet oxygen levels run low. Life still goes on with gills that are more efficient or by minimizing movement. Some animals that live here are swordfish, squid, wolf eels, and some species of cuttlefish. Many organisms that live in this zone are bioluminescent. This zone extends from 650 feet to about 3,300 feet. Some animals living in this zone will rise to the epipelagic zone at night to feed. In the bathypelagicRead MoreMarine Biomes1037 Words   |  5 Pages A marine biome is a large aquatic zone that takes up almost 75% of Earth’s surface, has a salt concentration around 3%, and is distinguished from other biomes by its physical environment. According to Campbell Essential Biology with Physiology, (2010), the habitats of a marine biome varies depending on the level of the sea that it exists (pp.382). The layers or â€Å"zones† that make up the marine biome consist of the pelagic realm, the intertidal zone, the photic zone, theRead MoreBiological Psychology Paper1189 Words   |  5 Pagesfunction (and behaviour) by the use of drugs that affect the action of neurotransmitters† (Wickens, 2005, p. 14). In 1936 John Z. Young found a neuron in a squid that was â€Å"large enough to allow the insertion of a stimulating or recording electrode†; mostly everything known about neurons has been discovered by using this research about the giant squid (Wickens, 2005). Alan Hodgkin and Andrew Huxley made many discoveries using Youngs’ discovery; they â€Å"were able to show that the electrical pulse was causedRead MoreThe Eye : A View Into Sight980 Words   |  4 Pagesaway impurities to maintain eye health. The biology of our eyes inspires us to develop ways we can protect and maintain comfort for these remarkable structures. For all the wonders our eyes provide throughout our lives, we owe them our attention and ongoing care. But to simply speak about the functions and structures of the eye would not be providing it with the admiration and respect it deserves. The evolution of the eye is the true marvel in biology, once considered so complex that even CharlesRead MoreThe Eco logy Of The Deep Sea Species1522 Words   |  7 PagesCookie-cutter shark can withstand these cold temperatures of the deep waters but do however migrate to the surface in order to increase the body temperature. The high pressure is survived through the large liver that is present within the internal biology of these species. The large liver is extremely oil rich which prevents the shark from being moved around by the pressure (Saveena, 2014). This helps the shark to maintain its buoyancy with little energy required. The deep water is also oxygen poorRead MoreWhale s Negative Interaction With Mankind1229 Words   |  5 PagesNatasha Clements October 17th, 2017 Marine Biology Ms. Brown p4 Honors Essay: Whale’s Negative Interaction With Mankind How Are Killer Whales Being Killed? Have you met Shamu? He (or she) is the star orca whale of the 2017 One Ocean Shamu Show at SeaWorld. The showcase begins with the propaganda display about saving the oceans, â€Å"The ocean is the heart of our natural world. Our legacy is tied to its future, in our hands to cherish and protect. We are one world, united by one ocean.† AccordingRead MoreThe Ecology Of The Cookie Cutter Shark1541 Words   |  7 Pagesthis increases the efficiency of the absorption of nutrient for these species (Castro Huber, 2010). Figure 07: Cookie-cutter bite marks (http://images.mentalfloss.com/) The Cookie-cutter shark can also feed on crustaceans, gonostomatids and squid (Hurst Dando, 2009). These species interact with multiple marine species such as dolphins, whales, sharks, bony fish as well as seals it interact with almost all marine species (Frederick, 2012). These species also do not really get fed on by other

Leadership in One Flew Over The Cuckoos Nest and...

Leadership in One Flew Over The Cuckoos Nest and Leadership in the Real World The theme of leadership in the ward does not mirror the outside world very accurately, as in contemporary society a leader of a society or an organisation is almost always accountable to a person senior to him. This is not seen in the novel, as Big Nurse seems to be answerable to no one, in fact, it is arguable that everyone answers to her. A hierarchy or class system operates inside the ward which can be clearly seen throughout the course of the novel. Patients living within the ward are ‘classed’ according to the state of their mental health or to the condition of which they suffer from. Chief describes the method of discriminating patients from†¦show more content†¦McMurphy has a strong, intelligent character and so he is able to manipulate others who are more vulnerable than he is. An example of his manipulation is when he shows some playing cards with pornographic photographs on them to Cheswick: ‘I brought along my own deck†¦Fifty-two positions’. Cheswick is pop-eyed already†¦those cards don’t help his condition. (16) Personality types which can be seen in contemporary society can also be seen very clearly with regard to the characters in the ward setting: McMurphy’s character is a rebel character who hates authority and authoritative figures. This is, perhaps, why he clashes so fiercely with Big Nurse. Chief is the veteran of the ward. He has been there the longest, since the start of World War II, with the exception of Big Nurse. He has the mutual respect of everyone in the ward. Billy Bibbit is insecure and has a stutter. His name is ironic in that it resembles a stutter when said. His problems have probably been caused by his overbearing mother, who was very protective and spoke for him whenever possible. In a large group of individuals, these personalities are often seen; A rebel character who goes against the system is almost always present in a class inside a school; A veteran who has gained the respect ofShow MoreRelatedKen Keseys One Flew Over the Cuckoos Nest and Anthony Burgesss A Clockwork Orange2318 Words   |  10 Pagessold to Americans, they lost their fundamental rights as human beings. However, their inferiority was further cemented when slaves eventually conformed to their white owners. In slavery’s infancy, almost all slaves resisted against their oppressors in one form or another but had limited to no success. These failed resistances eventually led to hopelessness for the slaves as they even began to consider slavery as an accepted practice. Many slaves developed a notion of performing their forced labour moreRead More One Flew Over The Cuckoos Nest Essay example1619 Words   |  7 PagesOne Flew Over The Cuckoos Nest   Ã‚  Ã‚  Ã‚  Ã‚  Sometimes in life people are forced to conform to a certain situation for lack of a better alternative, and this is the case in One Flew Over the Cuckoo’s Nest. These such people lack the will to stand up for their scruples, and intern are simply guided through their mundane lives by the powers that be. Until someone comes along offering them leadership and the prospect to become â€Å"big again.† The man who does so is no other than R.P. McMurphy. Scanlon, HardingRead Moreâ€Å"One Flew over the Cuckoo’s Nest†: an Allegory of Communism2301 Words   |  10 Pagesâ€Å"One Flew Over the Cuckoo’s Nest†: an allegory of Communism Have you ever heard anything about the lives of people who live in a Communist country? I am personally one of those whose family struggled 18 years without individual rights and freedom under the Communist rule. I am familiar with the lives of those people. These experiences are not found in any Communist books. Before 1975, Vietnam was a republic. On April 30th, 1975, Communists took over the country. They claimed that our country

Changing Times free essay sample

This paper examines the changes in the womens movements in Spanish speaking countries. This paper presents an in-depth study of the changing roles of Spanish speaking females over the last thirty years in their native nations. The author examines women movements and changes in Mexico and Latin America over the past three decades and discusses what has changed and what has remained constant. During the last 30 years the womens movement in the United States of America revolutionized the way women were treated. Women get more pay, they get more rights, and they are moving into careers that were formally reserved for men. While the world watched the American movement other movements began to take place. Hispanic women have historically been treated like second-class citizens in many areas of life. In Latin nations as well as Mexico the females have been given a different set of rules to abide by both socially and economically. We will write a custom essay sample on Changing Times or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The last thirty years in these nations have tested the very core of the value systems that have been in place for hundreds and thousands of years. The systems have been supported and founded in the belief that men are somehow better than women and that women are there for the comfort of men. This is not to say that they were not treated with kindness and appreciation, they were, they were just not treated as equals in many areas of their societies.