Trey Larpenteur
Mr. Miller/Ms. Dene’
Science/English/7A
24 April 2018
Sharks
Sharks go through 30,000 thousand teeth in their lifetime. Sharks are one of the top predators in the ocean. There are many different types of sharks, that vary in size. This report will discuss how sharks reproduce, and the difference between Megalodon and the Great White, and why sharks attack.
Sharks are one of the top predators. An average shark has 15 rows of teeth in their jaw. The shark that has the most rows of teeth is the Bull Shark. The normal shark size is 15-16 foot, and their main food source is fish.
Sharks reproduce in an interesting way. The male shark bites the female for stability, then he uses his claspers to connect to her claspers to transport
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A Megalodon shark is the largest shark ever to live on this planet. The Megalodon was 52 feet and 50 tons, which is massive. The name of the Megalodon means big tooth. They are named bigtooth because their teeth are 6 ½ to 7 inches long. The Megalodon lived about 17 million to 2 million years ago. The food source for this gigantic shark was whales. They were very powerful hunters, with serrated teeth. The jaw size on the Megalodon was 6 ½ feet. The Great White is currently our largest shark. The Great White Shark is an ancestor of the Megalodon. The Great White’s teeth are 3 inches long, which is a 3 ½ difference between the Megalodon’s teeth. The Great White can grow more than 21 feet and still not have the size of the Megalodon. Their teeth are serrated like the Megalodon. Their food source is completely different. Great White Sharks eat seals, sea lions, and fish. The Great White and the Megalodon only have one thing in common; when they latch on a prey, they shake their head side to side to rip off big chunks of …show more content…
The Bull Shark is one of the most dangerous sharks because it can go in saltwater and freshwater. The Bull Shark is like a garbage truck that literally eats anything. One time some people found a license plate in the stomach of a Bull Shark. The Tiger Shark is another shark that eats anything in the water. They have found
Larpenteur 3 license plates in their stomachs also. The Great White Shark doesn’t like to eat humans, but they get confused between seals and humans. The Great White Shark will never eat a human whole. They will take a big bite, which will probably lead the victim to bleed out and die. Surfers tend to look like seals, and that is one reason for sharks to attack.
Sharks also have really bad eye site in the water, so they are easily convinced it is their prey. Splashing around in the water attracts sharks because they think it is something struggling. Don’t go in the water with minor cuts because if the bleed just a little bit, you can be smelled by a shark. If a shark tries to attack you, hit it on the side or the nose. If a shark is 100 feet long, it probably means that it is aggressive and it is hungry. There are 11.5 millionth chance of getting attacked. The shark will come bump into you to see what your are and see if you are its
...s. According to studies and statistics done, you are more likely to be struck by lightning than killed by a shark. They are often misinterpreted as scary and violent creatures, however this is merely due to media. Shark based films such as Jaw show that these sharks are harmful when they really aren't. Tapes/recordings of sharks slaughtering humans are published so often because of its actual unusualness.
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...
The body of the great hammerhead is the biggest of the nine species of hammerhead sharks and is coloured grey-brown to olive green on top and off-white below. They have heavily serrated triangular teeth. The length of the great hammerhead can range from four to six meters and weigh between 230 to 450 kg.
presence of a cartilage skeleton, nine gill slits (turning into five gill slits in sharks, where the first four became the jaw), and fins. Sharks belong to the class Chondrichthyes—a more elaborated organism. Jaws derived from the first four gill slits, spiral valve, and productive fins. The fins are amongst the most important advancements made by the sharks.
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.
Sharks have been scientifically proven to be able to be trained and tamed by humans. For instance, Sharon Guynup says, "Scientists have taught lemon sharks to swim through mazes, ring bells, and press targets,” (“What Do You Know About Sharks?” 879). This proves that
Watching a movie where hundreds of swimmers on a beach are in a complete panic because of shark attacks makes a person scared to swim in an ocean, lake, or even a pond. Not only movies, but also documentaries of shark attacks stress how dangerous sharks are. In reality, are sharks really that dangerous or is it how they are portrayed? Stephen R. Palumbi who is a Professor of Biology at Stanford University and also the Director at the Hopkins Marine Station at Stanford wrote an article about other animals living in the ocean that are more dangerous to humans than sharks. In fact, he has written books about creatures in the water such as The Death and Life of Monterey Bay, and The Evolution Explosion. In addition, his son Anthony R. Palumbi is a novelist and a science writer that has written for Atlantic and other publications (Princeton University Press 1). Together they co- authored an article titled “Forget Shark Week: They aren’t the only fish in the sea” that was published the Los Angeles Times.
A great white shark can get anywhere from 12 inches to 60 feet long! They can also weigh anywhere from 150 lbs. to 3000 lbs. There is no difference between males and females. Great whites have six senses. Sight, smell, taste, touch, hearing and an Electro-Reception they get through the nose to communicate with other sharks! They can swim up to 35 mph and have 3,000 teeth in several rows.
Most people think that sharks are large, fast-swimmers, and savage predators. This is true of some species and groups should be interested of the appealing aspects of biology found within it: all sharks have an excellent sense of smell; some can detect electrical discharges; some sharks give birth to one of the
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).
...heir vision is not needed at that depth in the dark water (I 77). These parasites might actually help the sharks. These parasites are biolumiscent and they might attract those fast swimming fish to the oral side of the shark. With out these parasites it is possible that the sharks could not catch as many fish as it does, due to its slow speed. On top of the parasites on its eyes, the Greenland shark also has poisonous flesh. To get rid of the poison n order to eat it, the flesh must be boiled and dried several times (II 63). If the meat is not prepared correctly, it can cause, nausea, vomiting, diarrhea, and abdominal pain, tingling and burning sensation of tongue, throat and esophagus. It can also cause muscular cramps, respiratory distress, coma and death (III Vol 25, 905). This shark may not kill you when it’s alive, but you have to careful when it’s dead.
The lorenzini is a pit-like organ located on the head of the whale shark that senses weak electrical and magnetic fields. This is an area that is currently being researched extensively and is largely unknown. It is speculated that this organ is used by the whale shark as a navigational aid by using the earth’s magnetic force (Rowat 2012). Evolution Studying the evolutionary history and adaption for this species is difficult and an ongoing struggle for scientists. It is classified in the order of Chondrichthyes, suborder Elasmobranchii, and family Rhincodontidea.