Sharks: Predators With A Purpose Essay

1401 words - 6 pages

Shark! For many, their size, power, and great, mouthwatering jaws fill us with fear and fascination. Not for me, I’m bewitched by them. Sharks kill only a few people each year, but media coverage and movie representation of attacks have marked sharks as voracious killing machines. Our fears—and appetites—fuel an industry that hunts more than 100 million sharks each year and threatens to purge these vital predators from the oceans.
The shark is an enchanting creature, over 400 different swim in the ocean today. Too many, sharks symbolize the terrible essence of ruthlessness, representing the ultimate savages of the seas. Although many folks would rather not deliberately socialize with these fearsome predators of the depths, I appreciate swimming among sharks. Sharks in addition to their direct predecessors are swimming within the world's oceans for well over three hundred million years, and were going about their business long before dinosaurs walked the world. The fact that sharks have survived thus far without changing very much is a long real tribute to the effectiveness of their anatomy.
Sharks are fishes, confined within the taxonomic class called Chondrichthyes (meaning "cartilage-fish"). Sharks besides other cartilaginous fishes (rays, skates, and rat fishes) differ from the skeletal fishes because sharks have a cartilaginous skeleton, and lack a swim bladder. Worldwide there are over six hundred different types of fish, not to mention three hundred species of sharks.
From time to time sharks are referred to as primitive creatures. They are a prehistoric group of animals, so assuming sharks are primitive is correct. Unfortunately, this assumption is wrong. Recent offshore studies have shown that sharks are, in fact, extremely educated. Most sharks have an incredible sense of smell. Sharks can become aware of a single drop of blood dissolved in as much as one million gallons of water. Numerous sharks can sense the minute electrical currents produced by the muscles of swimming fish. Certain sharks like the Nerf shark can feel at a great distance the tiny pressure variations generated by injured fish struggling to swim. Contrary to popular opinion, most sharks have exceptional low light vision, thanks to a mirror located behind the retina. This mirror allows light to reflect through the retina a second time. A shark may have many rows of teeth, for example, the great white shark has five razor sharp rows of teeth. When an old tooth breaks or becomes too dull, a new one rotates into place. Are these the attributes of a primitive animal?
Sharks come in many shapes and sizes. The largest fish in the ocean is, in fact, the marvelous whale shark, reaching about 60 feet in length. The smallest known shark is the pygmy ribbon tail cat shark, which is about six to seven inches long when fully grown. While many sharks like the Sand Tiger shark do have exposed teeth, they only eat small invertebrates. Other sharks have no teeth at all, feeding by...

Find Another Essay On Sharks: Predators with a Purpose

An Inside Look at Shark Finning

1701 words - 7 pages soup.” In many Asian countries, it is a sign of wealth and prosperity and is often served and banquets and weddings to impress the guests. Just one bowl of shark fin soup can cost up to $100. Because of the high demand for shark fin soup, fishermen and middlemen alike have been finning sharks any chance they get. Although the shark fins are used in shark fin soup, they are also sold frozen, canned or dried. The fins are often treated with Hydrogen

Shark Hunting: The Loss of an Apex Predator, and the Corruption of the Ocean Ecosystem

2588 words - 10 pages well documented. Shark fin soup continues to grow ever more popular in Asian countries, shark fishing as a sport is becoming more and more prominent, and thousands of sharks' teeth and jaws can be seen for sale in tourist shops each day. As the demand for shark related products continues to rise, so does the killing. The loss of these apex predators is the cause for a large outcry due to the implications associated with their extinction. The

Shark Finning

747 words - 3 pages Did you know that sharks have been here longer than us humans? Sharks have been swimming the oceans for hundreds to millions of years before the first humans are said to have appeared on land. Unfortunately the shark population has been decreasing due to the shark fishing market. People have often thought sharks as predators to the human race; but truthfully, we should fear living in a world with no sharks. Occasionally, over 100 million sharks

Shark Water

810 words - 4 pages , how the extinction of Sharks may provide economic failure. Shark hunting has impacted the world from the moment it ever became such a commercial success. Shark hunting, although has made China economically successful because of its selling rates, may have negative effects eventually through time. With the disappearance of sharks, other commercially successful fish will deplete without intention. This will affect many countries’ sales and will

We Must Save the Great White Shark from Extinction

4284 words - 17 pages We Must Save the Great White Shark from Extinction The Great White Shark, immortalized by the Hollywood film Jaws, is at the midst of an international controversy. The shark, despite its notoriety, is in danger of extinction. A conflict over the fate of these sharks has existed for decades, but with recent attacks the debate has come to the forefront. The environmental conflict over the Great White Shark has yet to reach a conclusion, as

SHARK FINNING

730 words - 3 pages 93%, tiger sharks by 97% and bull sharks, dusky sharks and smooth hammerheads by 99%. The consequences of the decline in shark populations on ocean life are immense. The large shark species are "apex" predators, they are ecological stabilizers. For example along the US East Coast where large sharks such as black tip and tiger sharks have been virtually elevated, there have been declines in shellfish numbers and a reduction in water quality

The Natural History of Whale Sharks

1115 words - 4 pages 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

Sharks

1450 words - 6 pages rounded body, shaped somewhat like a torpedo. This type of flexible body makes their swimming in oceans and strong currents much easier. Their bodies are also shaped somewhat like a torpedo to give them a more streamlined affect in the in water. Yet, some types of sharks, the ocean dwellers have a flat body similar to that of skates and rays. Sharks can travel with great bursts of speed especially when attacking their prey or when excited. The

Shark Conservation

1949 words - 8 pages Shark Conservation Abstract Arising over 350 million years ago, the shark species has been labeled as a human devourer. Now, with the increase in human population, the demand for shark meat, fins, and cartilage are at an all time high; therefore, the existence of the shark is becoming a concern (Budker 1971). Individuals are conditioned to think of sharks as a negative aspect to the environment, which is prolonging the effort to save

All About Sharks-seven paragraphs

787 words - 3 pages because they have an elongated blade like snout that is lined with sharp teeth along the edges, which gives them the name saw sharks. Hexanchiformes, or cow sharks, comprise of two families. They are recognized by their six or seven pairs of gill slits. These sharks can often be found in deep water.Shark fossil records are incomplete at best. Most fossils found so far consist of nothing but teeth; in some cases a few vertebrae have been found

Stop Shark-Finning

1187 words - 5 pages kill about 30 people annually. Sharks are very beneficial to us, why do people keep on harming them? Why is shark-finning so important? Shark-finning gives both advantages and disadvantages economically, politically, cultural, societal, and environmental. It is important to recognize the significance of shark finning and its relationship with the government and how it affects a country’s economic state, how it relates to culture, and to know if

Similar Essays

What Is A Satellite? How Can They Help Us Daily / What Is The Purpose With Satellites. How Do They Orbit? Satellite Power Sources

1471 words - 6 pages first artificial satellite Telstar I into orbit. Since then, many more satellites were made by different countries and launched into space.How can they help us daily / what is the purpose with satellitesIt has been helping scientists find answers to the unknown, and assisting tourists finding their way when they are lost. Today, satellites have become so widely used that some of them have become available to civilians around the globe with over

What Is The Purpose Of A Business Plan And Why Is It An Essential First Step For A Start Up Firm? This Essay Also Addresses Commom Problems With Small Businesses.

804 words - 3 pages What is the purpose of a business plan and why is it an essential first step for a start-up firm? A business plan can get you in to action when just beginning to plan the future of your business. Starting a business can seem like a long, intimidating and drawn out process. A business plan will help you ease this task by setting things apart so that they may be seen more clearly. It also helps by breaking the process into pieces. So, writing a

The Secret Life Of Great White Sharks

2184 words - 9 pages Great White Sharks are greatly misinterpreted as vicious man-eaters because of the media, movies, and people’s imaginations, but they are actually large fish who mistake people for seals and other marine life. What is a great white shark? The great white, among the least understood of Earth’s creatures, is an apex predator, meaning that it is at the top of the food chain with no natural predators. This means great whites have their pick of food

Research Paper

1028 words - 5 pages swim up to 45mph. Sharks play a vital role in the oceans ecosystem something the average fish don’t do. Most species of shark serve as the top predators in the oceans food chain. Whether it is sharks intentions or not they help regulate the natural balance of the ocean at all levels. Although perceived as these blood thirsty animals Sharks usually hunt old, sick or weak prey, they help keep the species of the fish that are lower on the food