Sharks have several ways to dispatch their prey with surprise attacks, agility, and camouflaged sneak attacks. The shark’s dentition also tells the story of their diet as well as their method of attack. The Great White Shark, (Carcharodon carcharias), is the largest extant predatory shark on Earth and has large serrated teeth that tear through the flesh of its prey. Their teeth are 2.5-3 inches in height and have prominent serrations which allow them to tear large chunks out of prey including large fish, seals, sea lions, other sharks, carrion, dolphins, elephant seals, stingrays, and fish [8], [13]. These sharks hunt by swimming below the intended prey item and with a sudden burst of speed; they will attack with a large single bite and then swim off to allow the prey to bleed to death. These sharks are famous for breaching the water to grab seals and sea lions around the coast of South Africa in an area called Seal Island [7]. When the seals swim farther off from the island where the water is much deeper, the shark’s rate of a successful attack increase compared to the lowered success rate in shallower waters where the seals can easily outmaneuver them [7]. The bite force of the Great White measures around 4,000 pounds and is able to bite prey in half [10]. Great Whites …show more content…
Its teeth, like most shark teeth, have an upper tooth that does the tearing of flesh while the lower teeth puncture and hold onto prey [1]. The typical diet of a blue shark is mammalian carcasses, cuttlefish, octopus, smaller sharks, sea birds, crustaceans, but most important part of the diet is squid. In the documentary Blue Planet, it shows a blue shark preying upon a group of krill, which seems interesting considering the size of the shark. They attack like most sharks, with one large bite and wait for the prey to bleed to death
The film Sharkwater is a documentary directed and produced by Rob Stewart. Rob is an underwater photographer and a biologist that has a fascination with sharks, and their behavioral aspects. His way of studying these creatures he is able to learn about life and how to survive on this earth. This film showed the characteristics of reflexive documentary, this is because of the attention drawn into the sharks, their behaviors, and how we are affecting them. A statement that really stuck the documentary is people are taught their whole entire lives that sharks are dangerous but when you finally see it underwater your whole life can change in a flash. Rob made a very valid point as well, which is believed to be his thesis statement.
But occasionally the younger sharks are preyed on by bigger sharks that do not necessarily have to be Bull sharks they can be become prey to any larger species of shark and occasionally a crocodile. However there are parasites like Pandarus sinuatus, and Periscopus dentatus that use the surface of the shark’s skin and use it to survive (Curtis). Though that does not in anyway decrease or increase the economic uses for the bull shark, its effects on the environment, or level of danger to humans. In certain places around the world the amount of bull sharks is decreasing slightly, because sharks can be harvested to make fish food, for their meat, for oils, and their fins for shark fin soup, or in asia their skin can be used to make “good leather” (“Bullshark”; Curtis). Even though their numbers are thought to be decreasing according to the International Shark Attack Files, otherwise known as the ISAF, has reported that there have been at least 70 reported unprovoked attacks on humans of which 17 were fatal, but that is only the known number of the reported attacks by bull sharks there most likely have been many more attacks that went unreported (“Bullshark”; Curtis). They are known for being one of “the most dangerous sharks in the world” because they along side the tiger shark,and great white they are the most common sharks to attack a human
The Carcharhinus leucas commonly called the "bull shark" is a very unique shark. The bull shark can live in both salt water and fresh water but is commonly found along the Mississippi River and around Nicaragua. The bull sharks has a very blunt rounded nose giving it a bullish type of appearance thus giving it the name bull shark. The sharks are a dark black to a light grey with a white underbelly. Bull sharks can grow to be about 350 cm long and weigh around 230 kilograms. Bull sharks also tend to have smaller eyes compared to many other sharks which indicates that the bull sharks have limited vision. The bull sharks have triangular teeth like the great white shark (one of the bull sharks cousins). The bulls teeth are heavily serrated and are about 1.5 inches long which makes it easy to tear apart the flesh of their prey.
This image is what a majority of people believe to be the shark. They believe it to be the bloodthirsty sea monster that appears in countless works of literature and films, but science says otherwise. The classic picture painted by the minds of sailors returning from years at sea come from imagination and sharks’ violent methods of hunting and mating. Sharks fear humans as much as humans fear sharks, and most sharks, particularly the “man-eating” great whites, only bite humans because they mistake surfers for seals. In earlier times, the ocean was a source of mystery and adventur...
In the movie “Jaws”, which is a 20th century film, the preying shark terrorizes the beaches of New England. After he is finally trapped, he is killed- but not in the same fashion as Grendel was. The shark was shot in the mouth and then blew up to do a CO2 tank he had swallowed. The way in which each antagonist was killed was in two very different ways: with and without weaponry, respectively.
A large part of the whale's diet is made up of small shrimp-like animals called krill, which the animal strains with its plates of baleen. In order to get enough of these small creatures to eat, a blue whale has to filter large amounts of water. Folds of skin on its throat expand like an accordion to allow the whale to gulp in as much as 64,600 liters (17,000 gal) of water at one time. The whale then pushes its tongue (which can be as large as a Volkswagen) to the roof of its mouth in order to force out the water. Food is caught in the hairs of the baleen and swallowed. A blue whale weighing 75 to 80 tons eats about 4 tons of krill per day during the feeding season.
In Chinese tradition, Shark fin soup is called as “a celebration soup”, which people eat it to celebrate in various occasions. Moreover, people also believed that shark fin consisted of diverse nutrition values which provide them virility, wealth, and power(Wolchover, 2011). These beliefs lead to the beginning of poaching for sharks, the top of food chain in the sea world. Surprisingly, although people are aware of the decreasing number of sharks since the old days, around hundred million of sharks are still hunted each year(Heltus, 2013), to be served on luxury tables surrounded by those believers in things that they do not even prove whether the belief is reliable. Therefore, in the generation that people are mostly educated, sharks should no longer have to be continuously killed for their fins.
One of the previous papers in English class required the class to pick a paper to explore, this question will be concentrated on further in the synthesis essay. What evidence do scientist have to prove that prehistoric sharks existed? The reason behind picking this question wasn’t just to find proof that these monsters swam the seas, but to learn more about them from different resources. One of the resources that were used was a chapter in Angelo Mojetta’s book Sharks, called “ The Birth Of A Legend”. The other resource that was used for information was an article in Discovery Channels website called “ Prehistoric Sharks”. Sharks and Discovery Channel are the two resources that led to many other questions about their different, and similar views on prehistoric sharks existence.
Well if you happen to have no idea or clue as into what I’m talking about, which I seriously doubt that’s would be the case. Ever saw the movie Jaws and all of the subsequent directed by Steven Spielberg, then you definitely have a great picture of what the Great Whites are and what they are capable of doing to a human and other sea animal, this also label them one of the most dangerous wild life. The Great White also goes by these other names White Pointer or White Death is from a large species of lamniform shark. If you ever trying to locate on...
In 2015 only 59 shark attacks have occurred around the world compared to the millions of sharks killed by humans every year. Due to these accidental shark attacks people tend to think that sharks, especially Great Whites are evil creatures with malice intentions when attacks do occur; but, on the contrary that is wrong. Sharks are not the only beautiful and unique creatures in the ocean, they also play a vital role in our ecosystem; however, due to human interference they might not be around much longer, through awareness sharks can be protected from endangerment.
Thesis: Sharks should be conserved because they are an important part of the ocean, attacks are often incidental, and human behavior influences the behavior of sharks.
They are creatures that have no clue what we are and are afraid of us. Every year, thousands of more people are killed by other people than by sharks; thousand more people are killed in car accidents than by sharks, and more people are killed by lightning strikes than by sharks. Each year humans kill tens of thousands of sharks, yet, there are fewer than 100 shark attacks upon humans. For example, The Great White shark also known as the man-eater, has the greatest reputation for attacking humans. Recent studies of Great Whites show that they mainly feed on sea-mammals. Seen from below the surface a person swimming with a shark looks much like a seal, with arms and legs sticking out. The shark usually surprises its victim, being a person or seal, by one massive bite, and then retreats in order to allow the victim to die before digesting the food. For this reason, many humans survived the attack of a Great White shark if they are saved before being eaten. Not only getting out of the water and be safe, but the result of loss, blood or
The morphology of whale sharks is mostly similar to aquatic fish species, but many specific traits help differentiate them from the rest. Whale sharks are the largest fish in the world and can reach a size of around 20 meters (Martins, C., and C. Knickle). This is often compared to the size of a school bus. The shark has a very large transverse mouth. They have 5 very large gill slits and have a larger first dorsal fin compared to the second one (Whale Shark). They have a distinctive spotted “checkerboard” pattern with stripes (Martins, C., and C. Knickle). It is not exactly known why they have this specific body marking. It is believed that the body markings act as a camouflage. The strange thing about whale sharks is that they have 300 rows of teeth that play no role in feeding (Martins, C., and C. Knickle).