...in so many shapes and kinds as the shark. The earliest evidences of sharks are isolated spines, teeth and scales that appeared about 430 million years ago in the Silurian Period, known as the "Age of Fishes". Sharks have a sleek, streamlined design which helps them swim without using up a lot of energy.They certainly need to conserve their energy because they never really sleep and most of them never stop swimming. Some sharks are fierce predators, and would be happy to eat you if they encountered you. Almost any shark six feet or longer is a potential danger, but three species have been identified repeatedly in attacks: the Great White Shark, the Tiger Shark and the Bull Shark . All three live world wide, reach large sizes and eat large prey such as marine mammals or sea turtles. But most sharks never grow longer than five feet and never even see anyone with legs and arms anyway. People kill thousands more sharks every year than sharks kill people. Sharks take about as long to mature as we do. Some of them become adults in their teens. A mother shark carries her babies inside her body while they develop, sometimes for more than a year. Even so, some sharks are born inside an egg which they have to crack open. They spend early portions of their lives in nursery grounds. Some of the advantages sharks have over people is that they keep growing new teeth, they don't have breakable bones, and they are not prone to get cancer. Sometimes sharks are referred to as swimming computers...
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...Sharks are an amazing species that have been around for millions of years, but they are being threatened by their newest predators, humans. Mankind has the power to terminate the marvelous creature or to help restore what has been done. About 5 people per year vs 100 million Sharks should be afraid of Sharks or should we be afraid of them? Sharks are an apex predator, they are in charge of the oceanic food chain, they are in thier own right “king of the ocean”. When Shark populations fall it causes problems in many oceanic ecosystems. The loss of Sharks can also lead to the depletion of the habitat itself. Consequently, the depletion of Sharks in the ecosystem causes instability in the entire oceanic ecosystem and creates a ripple effect down...
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...Shark Research Paper You are more likely to get struck by lightning than to get eaten by a shark. Don’t let the word shark fool you, they are actually harmless creatures that are demonized greatly. There is a popular tagging group called Ocearch, and their goals are to protect and research the sharks. Protection of these beautiful majestic creatures are essential to the underwater world. Sharks such as Sophia, have many unique features. The longest whale shark recorded was 41.5 ft long. This shark was named after the size they get to. Whale sharks almost never attack humans and have no intention to. Even though they are as big as whales, they are not whales, which means that they are cold blooded and have to live in warm waters. As you...
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...Shark Killing and the Ecosystem Introduction Sharks are fascinating creatures that come in all sizes and live in water all over the world. Arguably, these creatures play a very imperative responsibility in the ocean that a fish cannot. Apparently, sharks are the top food providers in the ocean almost in every part of the world. In this case, they assist in keeping the inhabitants of other fish species healthy and in suitable proportion for their ecosystem. However, shark population faces the threat of extinction in almost all parts of the world due to overfishing. Fishers us a technique called Bycatch, a process in which marine mammals or species of fish are unintentionally, caught while fishing for a specific target. Irrespective of the initiatives and laws put in place for overfishing, fishers have continued to hunt sharks for the fin soup, which is in high demand than their meat. On the other hand shark cartilage and shark liver oil are sold as cures for the hosts of aliments. Due to this disparity between meat and fins, it has led to a horrific practice of shark fining. As a result, there is need to create awareness on the importance of sharks in all parts of the world in order to save ocean ecosystem from extinction. Catching Techniques Many fishing techniques and gear are no selective and result in catching and discarding millions of marine life that is not always the target species. Most of the fishing methods like the long line typically are used to catch tuna. However...
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...What is Shark Finning? Why is it such a vicious practice and why do people do it? Shark Finning is an atrocious practice of cutting off the shark’s fins and tossing the shark, still alive, back to the water; this practice is illegal but it is practiced anyways and it’s quite serious as some shark are in the edge of extinction. Once the fins have been cut off, the shark is thrown back to the water and it slowly dies. The shark may either drown, bleed to death or be eaten by other creatures. The shark can’t move or defend itself because it has no fins so it just sinks to the button of the sea; helpless. Shark finning is one of the most monstrous things you can do to an innocent animal. It’s like cutting a person’s hands and legs and leaving them alone. The person is vulnerable and defenceless. It’s such an evil practice to perform because the creature suffers and dies in pain. Some people wonder why the fishers toss the finless shark to the water as it’s really heartless to leave an animal to die like that. The fishers try to avoid paying for the fish because they are charged for every kilogram they bring in the boat. Shark meat is rarely eaten and therefore it’s very cheap. Fisher men care for the fins as they are expensive and light. The fishers would have had a loss if they brought the whole shark with them and that is why the toss the finless shark back to the sea. The shark eventually dies in a really cruel way and the fisher earns quite a lot of money for something...
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...around the world. Sharks, although many claim them to be, are not all bloodthirsty killers. The American thriller films Jaws, Jaws 2, Jaws 3, and Jaws: The Revenge, simply gave them a bad rap. In the serious, the great white shark goes around barbarically murdering people that go into the ocean. Ever since the films were released, they have struck terror upon the public viewers. People only seem to think...
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... and ideas to help students understand meaning and relationships between facts and terms within a learning task (Strangman, 2002). It is important that content being taught in the classroom is structured in a way that helps the students organize key concepts and related details. Graphic organizers are used to help students organize key concepts and related details. They help students map out ideas visually and are visual aids for learning and instruction (Instructional Strategies Online, 2013). Graphic organizers help students be actively involved in their learning process and also helps them discover new information and make connections that they did not think of or know before. A K-W-L chart is an example of a graphic organizer. It is broken up into three columns label K, W, and L. This chart is used to list what the students already know, what they want to know, and what they learned at the end of the unit. This graphic organizer activates the students’ prior knowledge and gets them thinking about the topic and what they want to know. It allows the students to organize the information they are learning and keeps them engaged and interested in the unit. K-W-L charts are a great way for students to organize their thoughts and learning and a way for teachers to direct instruction throughout a unit. The lesson I will use to teach the students how to use a K-W-L chart is on the unit of sharks. At the beginning of the unit I will post a K-W-L chart about sharks on the classroom...
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...Endangered Sharks Rapidly declining shark populations has already been noticed and will continue to decline unless further steps are taken to ensure their protection as endangered species. 50 out of 307 shark species, listed by the International Union for Conservation of Nature (IUCN), are either vulnerable, endangered or critically endangered. However, of those 50, only three, the White, Whale, and Basking sharks are protected internationally under CITES. CITES is the Convention on International Trade in Endangered Species. Sharks as a whole, represent the highest percentage of threatened marine species listed on the IUCN Red List of threatened species. Some well-known species that are endangered are Hammerheads, Tiger Sharks, Whale Sharks, Great White Sharks, Shortfin Mako Shark, and many tropical reef sharks. The decrease of shark populations has already had devastating effects on local coastal communities. Two of the world’s largest fish are on the endangered list. The Whale Shark is listed as vulnerable for extinction. They migrate seasonally and are targeted by commercial fisheries. Whale sharks feed on krill and plankton so they do not harm humans, the most harm one could face would be to get struck by its massive caudal, tail, fin. Whale Sharks are beneficial to many tropical reef areas. In addition, the Basking Shark is also listed as vulnerable. These are the second largest living fish left. They are found in all the worlds’ temperate oceans and are a...
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...Sharks One of the most feared predators of the ocean are the sharks, with more than 465 known species of sharks living in our ocean today. They are very popular animals with movies such as Jaws and Deep Blue Sea, these animals are also dedicated a whole week on animal planet they are often categorized as monstrous savages who just attack any and everything. In fact that isn’t a true reputation of them. These animals are survivors and have been around for a long time. These fascinating creatures have caught the eye and imagination of so many people as well as me. There are many things I want to cover over today just to give a better understanding and idea of sharks. Sharks are very smart creatures so its no surprise to learn they have plenty of ways in effective forms of communication. Eventhough sharks are generally loners, so they aren’t in groups. This makes it harder for scientist to observe how they actually communicate with each other than with other animals that live in the water. They have an amazing sense of hearing which is believed most likely to be how they communicate majority of the time. They can hear sounds at very low frequencies so a great part of it won’t even be picked up during the test observations. Sharks also use their hearing to allow them to pick up vibrations and electrical currents from other sharks in the water with them. Most of the communication among sharks involves aggression. They will fight each other not for territory but for food. For...
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...Great White Sharks Great White Sharks perhaps one of the most feared and misunderstood creatures on planet earth. Popular culture’s point of view of this wonderful and magnificent organism has been slightly skewed because of television and movies such as Jaws. Which depicts these great animals in a negative light typical of Hollywood. In a positive light this generated more interest among people to hopefully begin to understand this exceptional predator of the seas. Analyzing the fossil record of ancient sharks can be quite a bit difficult task since sharks are made of mostly cartilage which decomposes and leaves almost no trace. Paleontologists are left looking for fossilized teeth and jaw bones. All sharks are extremely well suited for their aquatic environment. The Great White Shark physiology is far superior to that of any ocean hunter. Through evolution they possess six senses that enhance their ability to hunt; vision, hearing, smell, taste, touch, and electro-reception. These characteristics give a tremendous advantage to the Great White while looking for prey. They have supreme hearing with external ears located just above the eyes very difficult to see however the highly developed ear stones are able to sense the tiniest vibrations in their environment (http://ocean.si.edu/great-white-shark). One of the most interesting developments that Great White Sharks possess that humans would be extremely jealous of is the electro-reception. In the front of snout of...
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...Running head: Sharks Sharks T Tolerico Marine Biology Doctor Cameron Guenther Sharks What do you think of when you hear the word “Shark”? Do you think of the lion of the ocean or perhaps God’s perfect predator/scavenger? Perhaps you think of the movie “JAWS”? Most people will think of the movie “JAWS” and think killer, attacker, and predator. However, are sharks really preying on humans? I view sharks as God’s perfect predator and scavenger. Sharks, like lions, weed out the sick and slow fish to keep the population strong. They also scavenge on the bottom of the ocean any carcasses that settle there. The attacks on humans are more likely the shark “tasting” to see if the movement is a fish. When the shark realizes that the human is not its prey, they move away. Sharks can be found all over the world’s seas, from the equator to polar regions. We are currently aware of about 480 species and there are still species to discover. Some species, known as benthic, dwell mainly on the ocean floor. An example of a benthic is the nurse shark or ray shark. They scour the ocean floor for food. Other species are known as pelagic, meaning they spend much of their time navigating the open seas. Most of the species that we are familiar with are pelagic. Some species even inhabit rivers and lakes. The Bull shark can migrate into rivers and lakes. One important feature of sharks is that they are made up of cartilage not bone. There has been research done on shark cartilage...
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...Data Collection Chris Oakley SS3150 Angela Givens Create electronics for use in marine biology that can help us understand what lives in the oceans of the world. How much do we know about what lives in the oceans? In what ways can electronics be used to explore the underwater world? Is using electronics the best way to explore the oceans? I believe that the use of electronics will be instrumental in our exploration of the world’s oceans and beyond. Understanding and predicting animal movement is important as it is central to establishing effective management and conservation strategies. Until relatively recently, studying the movements and behaviors of highly migratory marine species (turtles, sharks, whales, penguins, seals and billfish) have been challenging due to the logistical and technological constraints of working in aquatic environments. However, rapid advancements in electronic tagging and tracking tools have significantly improved the ability of scientists to remotely study the movements of these enigmatic, and often threatened, animals Emerging analytical tools and technologies capable of measuring the physiological state, movement capacity, and performance ability of marine animals, as well as the environmental factors they encounter, are allowing researchers to increasingly understand and predict why animals move. As this field continues to advance, electronic tagging will enable scientists to address some of the most pressing environmental issues of the...
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...persuasive speech about shark culling, finning and cruelty to sharks to hopefully educate people and inform them with the actual facts and truth. To bring awareness to the important issue of shark culling and over - fishing and to change people’s views on these stereotyped creatures. To convince people to not listen to anything they see or hear on the media about sharks because it is very biased information and not aimed at solving the problem or creating a long term solution, rather to evoke people’s fear of sharks and to make them more scared when swimming in our oceans. It is aimed at the general population of Australia and anyone who would go swimming or indulge in water- based activities in the ocean and along the coast. This is also targeting anyone who has ever eaten shark fin soup without a second thought of the suffering that was caused to make it. As an ocean lover and surfer, I strongly believe that shark finning and culling is an important issue relevant to society today. Most of the population has not been properly informed about the situation and I am here today to hopefully change your views on sharks. By the end I would like you all to see them in a different light and hopefully agree with me when I say that shark culling is unnecessary and inhumane and shark finning is barbaric and cruel. Shark finning, for those of you who are unaware, is the removal and retention of shark fins and then the discard of the carcass into the ocean. The shark is almost always alive...
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...Basking Shark In the midst of all the masters of the sea, comes an enormous atrocious sea creature. It is known for being the second largest species of sharks in the world and also a fascinating monstrosity. Cetorhinus Maximus, also known as Basking sharks are fierce yet bizarre lethargic sharks. They are known for their gigantic mouths and unique appearance, which sets them apart, and additionally are quite impressive. According to “The Shark side of Life” it states that, “These sharks can grow to lengths of over 35 feet (10 meters), thus making them the second largest fish in the ocean ("The Shark side of the World ").” Due to their colossal appearance, this particular shark has few enemies. Basking sharks are very independent and known to depart from their mothers once born. They are ovoviviparous which is a form of reproduction where the eggs are internally fertilized as well as hatched within the female bearer which she gives birthed to fully young sharks. In addition to their eccentric process of reproduction, Basking sharks are oophagous, which means that the mother produces infertile eggs to nurture the fertile eggs, as a source of food. According to Sharks Trust, it states “Gestation periods of 1–3.5 years have been proposed though this figure has recently been revised to around 14 months. Estimates of the size at birth range from 1–1.7m, making Basking Shark pups larger at birth than the majority of other sharks are when fully grown ("Shark Trust ").” This shows...
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...International Shark Attack File “the number of unprovoked shark attacks has grown steadily since 1900, despite an overall decline in shark populations”. (Amin, 2012, p. 189) We walk through our negotiations to make it legal to hunt sharks and eliminate a threat to humans. A threat that is increasing as our world population’s increase. Shark attacks have affected, business, tourism, our safety, and could impact our health. Allowing us to fish for sharks, can eliminate a threat, we have lived with for hundreds of years. Body Today we meet to introduce Bill No. 6-142 into the senate. This will be recorded as our Fourth Regular Session. This bill has been created as an amendment to “Title 27 of the Palau National Code to prohibit foreign fishing vessels from fishing within a 50 nautical mile radius to the east of the reef entrance to Malakal Harbor; to prohibit foreign fishing vessels from taking reef fish, turtles, rays, sharks,” (Techera, 2012, p. 6) If this bill is passed we will be putting unnecessary lives at the risk. We have discussed the arguments we need to punish “any person who is found by the Supreme Court in a civil proceeding to have committed an act prohibited by section 181 of this title shall be liable to the national government for a civil penalty which shall not exceed $500,000 for each violation.” (Techera, 2012, p. 6) These fishermen would be protecting the lives of numerous individuals and boosting the economies of those affected by shark attacks...
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