Interesting Bull Shark Facts (Carcharhinus leucas)

The bull shark (Carcharhinus leucas)  is an aggressive shark found throughout the world in warm, shallow waters along coasts, in estuaries, in lakes, and in rivers. Although bull sharks have been found inland as far as the Mississippi River in Illinois, they arent a true freshwater species. The bull shark is listed as near threatened by the International Union for Conservation of Nature (IUCN). Essential Facts Bull sharks get their common name both from their appearance and their behavior. The shark is large and stocky, with a broad, flat snout and an unpredictable, aggressive nature. Females are larger than males. A typical female bull shark is 2.4 m (7.9 ft) long and weighs 130 kg (290 lb), while a male averages 2.25 m (7.4 ft) and 95 kg (209 lb). The largest recorded bull shark was a 4.0 m (13.1 ft) female. The bite force of a bull shark is 5914 Newtons, which is the highest for any fish, weight for weight.There are 43 elasmobranch species found in freshwater. Sand sharks, sawfish, skates, and stingrays are other species that can enter rivers. Bull sharks are capable of osmoregulation, which means they can control their internal osmotic pressure when external salinity changes. This also makes them euryhaline (able to adapt to different salinities) and diadromous (readily able to swim between fresh and salt water). Bulls sharks give birth to four to ten live young in fresh water. Over ti me, the sharks gain a tolerance for salinity. Newborn or young sharks are usually found in fresh water, while older sharks tend to live in salt water. Young bull sharks flow with the tides to conserve energy needed for movement and osmoregulation. However, bull sharks can live their entire lives in fresh water. Adult life in fresh water is not ideal, as most of the sharks food lives in the sea.Bull sharks mainly eat bony fish and smaller sharks, including bull sharks. As opportunistic predators, they also eat terrestrial mammals, birds, turtles, crustaceans, echinoderms, and dolphins. They use the bump-and-bite strategy to attack prey, typically hunting in murky water. Usually, bull sharks are solitary hunters, although they may hunt in pairs to trick prey. Although bull sharks hunt in murky water, they can see color and use it to seek prey. They can be attracted to bright yellow gear, for example. The sharks hunt both during the day and at night.Adult sharks mate in late summer or early autumn. It takes 10 years for a shark to reach maturity. In the mating ritual, the male bites the females tail until she turns upside down, allowing him to copulate. Mature females often have bite marks and scratches.Bull sharks are apex predators, so their main threat is mankind. However, they may be attacked by great white sharks, tiger sharks, and crocodiles. The average life span of a bull shark is 16 years. How Dangerous Is the Bull Shark? The bull shark is believed to be responsible for most shark attacks in shallow water, even though  the International Shark Attack File  (ISAF) cites the great white shark (Carcharodon carcharias) as  responsible for the largest number of bites to humans. The ISAF notes great white bites are often correctly identified, but its difficult to tell bull sharks apart from other members of the family  Carcharhinidae  (the requiem sharks, which include the blacktip, whitetip, and grey reef shark). In any case, the great white, bull shark, and tiger shark are the big three where shark bites are concerned. All three are found in areas frequented by humans, have teeth designed to shear, and are large and aggressive enough to pose a threat. How to Recognize a Bull Shark If you see a shark in fresh water, chances are good its a bull shark. While the genus Glyphis includes three species of river sharks, they are rare and have only been documented in parts of Southeast Asia, Australia, and New Guinea. Bull sharks are gray on top and white underneath. They have a small, bullish snout. This helps camouflage them so they are harder to see viewed from below and blend in with the riverbed or sea floor when viewed from above. The first dorsal fin is larger than the second one and is angled rearward. The caudal fin is lower and longer than that of other sharks. Tips for Telling Sharks Apart If youre swimming in the surf, its not a smart idea to get close enough to identify a shark, but if you see one from a boat or land, you may want to know what type it is: Sandbar sharks also have rounded snouts, but their dorsal fins are larger and more triangular than those of bull sharks.Blacktip sharks are shaped much like bull sharks, but they have pointed snouts and white anal fins. Note juvenile bull sharks may have black-tipped fins, so coloration is not a good way to distinguish these species.Lemon sharks have blunt snouts, but they are yellow-green to olive-gray in color and both their dorsal fins are about the same size. Lemon shark dorsal fins angle back like those of a bull shark.Spinner sharks have pointed shouts, black tipping on their anal fins, and a band of Z-shaped lines on their sides.Tiger sharks have a dark stripe on their sides.Great white sharks are very large (10-15 ft long), have black eyes, and pointed snouts. Their coloration is similar to the bull shark (gray on top, white underneath).

Social Work As A Profession - 1826 Words

Hailey Wistner Social Work as a Profession University of South Alabama Abstract Social Work throughout the professional world has had to battle for it to be recognized as a profession and really made scholars define what a profession really is. Though it took a long amount of time and a lot of people fighting for it, Social Work has finally begun to be recognized as a profession and not just a job. This paper aims to focus on what makes Social Work a profession and what it takes to become a Social Worker. Specifically, it will focus on Dorthea Dix and how her work impacted the Social Work profession and how she helped develop the values and ethics that make Social Work the profession that it is today. Furthermore, it will provide why things like critical thinking and the theory of person-in-situation affect Social Work and how the values may or may not interfere with my own personal values and how that could affect my profession and how to compensate for those differences. Social Work as a Profession When talking about Social Work as a profession, we must first understand what Social Work is actually defined as. The International Federation of Social Workers (IFSW) adopted an international definition that says that Social Work â€Å"promotes social change, problem solving in human relationships, and the empowerment and liberation of people to enhance well being† (Dubois and Miley, 2014, p. 2). Dorthea Dix, who was a pioneer of the social workShow MoreRelatedSocial Work As a Profession685 Words   |  3 PagesChoosing social work as my future profession was a decision I made after much reflection, considering the fact that more than just a profession, social work is a vocation that I must commit to, professionally and personally. One of the main reasons why I decided to pursue social work as my future profession is that I have always been interested and passionate about social issues, particularly those I find relevant to my life. My experience living close to informal settlers in my community exposedRead MoreThe Profession Of Social Work1290 Words   |  6 PagesOne of the main purposes of my interest in the profession of social work is to gain the knowledge and skill set to effectively help, counsel, and accordingly, provide services for all individuals so that their problems and needs are met. The profession of social work can be rigorous, yet it is a rewarding career that I am ready and willing to engage in. With the career being very diverse, it allows me to devote to my community in a number of ways from working in mental health to provide adequateRead MoreSocial Work As A Profession1309 Words   |  6 PagesSocial work as a profession is a universal and opportunistic field. The field itself ranges from placements in mental health to even education. One of the most prominent and growing areas in the field is medical social work. According to the NASW, social workers in hospitals and medical centers provide frontli ne services to patients with conditions spanning the entire healthcare continuum. Medical social work includes settings such as hospitals, clinics, nursing homes, rehabilitation centers, etcRead MoreThe Profession Of Social Work1253 Words   |  6 PagesThe profession of Social Work introduced itself to me at a very tender age. My personal interest in the social work field was solidified when I lived with my paternal aunt and her abusive ex-husband. At age 13, my traits of compassion, empathy and patience allowed me to mentor and guide my aunt when she was most vulnerable. For the past half decade, I have maintained a constant and consistent path to social work, with the hope to obtain my LCSW (licensed clinical social worker) and empower our mostRead MoreSocial Work Is The Profession735 Words   |  3 PagesI. Social Work is the profession by which to help others in need A. Social Workers Assess and Advocate for others in need B. They work as an intermediary to connect people with helpful services II. Older population A. Any individual over the age of 65 is apart of the older population B. The Older population is growing and there for more services will need to be utilized because people are living longer C. With more services being utilized more cost will incur D. 40% of people need assistance andRead MoreSocial Work As A Profession1928 Words   |  8 PagesSocial work, as a profession, has developed greatly over the years. As an actual profession, social work did not truly begin until the 1900s. In the 1920s schools of social work developed uniform standards for the training and education used. These standards were developed by the American Association of Schools of Social Work, which later merged and became the Council on Social Work Education. This is the group that currently regulates curriculum taught by social work schools. In 1955 the NationalRead MoreSocial Work As A Profession1869 Words   |  8 PagesStatement Cutley S. Thadison Purpose of social work choice of social work as a profession. Social Work is a powerful, selfless profession. We as a profession enable persons within a community achieve positive and beneficial goals. We speak for those who can’t speak for themselves while teaching them how to speak for themselves. The profession of social work is about putting the needs of others before self. I have decided to pursue social work as a profession due to my desire of wanting to help othersRead MoreThe Profession Of Social Work1761 Words   |  8 Pagesdefining social work, the phrase â€Å"a helping profession† is used quite frequently. The profession is often misconstrued with promoting the distribution of welfare. Often times, this stereotype amuses me because social work is remarkably so much more. Not only do people fail to realize that social work is one of the broadest occupations that offers various work environments, but also they neglect one of the key goals besides the act of helping: empowerment. Yes, the profession of social work st rivesRead MoreSocial Work As A Profession907 Words   |  4 PagesA) I would describe social work as a profession that seeks to help individuals, families, and groups in multiple ways. Social work takes into account benefits of society as well as individuals and therefore seeks for a solution to a problem that would be the most moral and right thing to do. The social work profession has multiple careers that assist with several issues such as adoption, mental health, addictions, poverty and homelessness, hospice care, and immigration and aboriginal treatment. EachRead MoreThe Social Work Profession2035 Words   |  9 PagesIn the social work profession, the primary goal is to aid and empower individuals or families who are faced with oppression, vulnerable in society, and living in poverty (Code of Ethics, 2008). Social workers strive to improve the welfare of those who need assistance meeting their daily basic essentials for survival. According to Abraham Maslow’s Hierarch y of Basic needs, a person requires five clusters to make them an integrated and self-motivated whole in society. The five clusters include: physiological

Clocks Essay Research Paper Not until somewhat free essay sample

Redstem storksbills Essay, Research Paper Not until slightly late ( that is, in footings of human history ) did people happen a demand for cognizing the clip of twenty-four hours. As best we know, 5000 to 6000 old ages ago great civilisations in the Middle East and North Africa initiated clock devising as opposed to calendar doing. With their attendant bureaucratisms and formal faiths, these civilizations found a demand to form their clip more expeditiously. After the Sumerian civilization was lost without go throughing on its cognition, the Egyptians were the following to officially split their twenty-four hours into parts something like our hours. Obelisks ( slender, tapering, quadrilateral memorials ) were built every bit early as 3500 BC Their moving shadows formed a sort of sundial, enabling citizens to partition the twenty-four hours into two parts by bespeaking midday. They besides showed the twelvemonth # 8217 ; s longest and shortest yearss when the shadow at midday was the shortest or longest of the twelvemonth. Later, markers added around the base of the memorial would bespeak farther clip subdivisions. Another Egyptian shadow clock or sundial, perchance the first portable timekeeper, came into usage around 1500 BC to mensurate the transition of # 8220 ; hours. # 8221 ; This device divided a sunstruck twenty-four hours into 10 parts plus two # 8220 ; twilight hours # 8221 ; in the forenoon and eventide. When the long root with 5 variably spaced Markss was oriented east and west in the forenoon, an elevated crossbar on the east terminal cast a traveling shadow over the Markss. At midday, the device was turned in the opposite way to mensurate the afternoon # 8220 ; hours. # 8221 ; The merkhet, the oldest known astronomical tool, was an Egyptian development of around 600 BC A brace of merkhets were used to set up a north-south line by run alonging them up with the Pole Star. They could so be used to tag off nighttime hours by finding when certain other stars crossed the acme. In the pursuit for more year-around truth, sundials evolved from level horizontal or perpendicular home bases to more luxuriant signifiers. One version was the hemispherical dial, a bowl-shaped depression cut into a block of rock, transporting a cardinal perpendicular gnomon ( arrow ) and scribed with sets of hr lines for different seasons. The semicircle, said to hold been invented about 300 BC, removed the useless half of the hemisphere to give an visual aspect of a half-bowl cut into the border of a squared block. By 30 B.C. , Vitruvius could depict 13 different sundial manners in usage in Greece, Asia Minor, and Italy. Having described a assortment of ways devised over the past few millenary to tag the transition of clip, it is informative to specify in wide footings what constitutes a clock. All redstem storksbills must hold two basic constituents: A regular, changeless or insistent procedure or action to tag off equal increases of clip. Early illustrations of such procedures included motion of the Sun across the sky tapers marked in increases, oil lamps with pronounced reservoirs, sand spectacless ( # 8221 ; hourglasses # 8221 ; ) , and in the Orient, little rock or metal labyrinths filled with incense that would fire at a certain gait. A agency of maintaining path of the increases of clip and exposing the consequence. Our agencies of maintaining path of clip transition include the place of clock custodies and a digital clip show. The history of timekeeping is the narrative of the hunt everlastingly more consistent actions or procedures to modulate the rate of a clock. Water redstem storksbills were among the earliest timers that didn # 8217 ; t depend on the observation of heavenly organic structures. One of the oldest was found in the grave of Amenhotep I, buried around 1500 BC Later named water clocks ( # 8221 ; H2O stealer # 8221 ; ) by the Greeks, who began utilizing them about 325 BC, these were rock vass with inclining sides that allowed H2O to drip at an early changeless rate from a little hole near the underside. Other water clocks were cylindrical or bowl-shaped containers designed to slowly fill with H2O coming in at a changeless rate. Markers on the interior surfaces measured the transition of # 8220 ; hours # 8221 ; as the H2O degree reached them. These redstem storksbills were used to find hours at dark, but may hold been used in daytime every bit good. Another version consisted of a metal bowl with a hole in the underside ; when placed in a container of H2O the bowl would make full and drop in a certain clip. These were still in usage in North Africa this century. More luxuriant and impressive mechanised H2O redstem storksbills were developed between 100 BC and 500 AD by Greek and Roman watchmakers and uranologists. The added complexness was aimed at doing the flow more changeless by modulating the force per unit area, and at supplying fancier shows of the transition of clip. Some H2O redstem storksbills rang bells and tam-tams ; others opened doors and Windowss to demo small figures of people, or moved arrows, dials, and astrological theoretical accounts of the existence. A Grecian uranologist, Andronikos, supervised the building of the Tower of the Winds in Athens in the first century BC. This octangular construction showed bookmans and market place shoppers both sundials and mechanical hr indexs. It featured a 24-hour mechanised water clock and indexs for the eight air currents from which the tower got its name and it displayed the seasons of the twelvemonth and astrological day of the months and periods. The Romans besides developed mechanised water clock, though their complexness accomplished small betterment over simpler methods for finding the transition of clip. In the Far East, mechanized astronomical/astrological clock doing developed from 200 to 1300 AD. Third-century Chinese water clocks drove assorted mechanisms that illustrated astronomical phenomena. One of the most luxuriant clock towers was built by Su Sung and his associates in 1088 AD Su Sung # 8217 ; s mechanism incorporated a water-driven escapement invented about 725 AD The Su Sung clock tower, over 30 pess tall, possessed a bronzy power-driven heavy weapon domain for observations, an automatically revolving heavenly Earth, and five front panels with doors that permitted the screening of altering mannikins which rang bells or tam-tams, and held tablets bespeaking the hr or other particular times of the twenty-four hours. Since the rate of flow of H2O is really hard to command accurately, a clock based on that flow can neer accomplish excellent truth. Peoples were of course led to other attacks