วันพฤหัสบดีที่ 25 กรกฎาคม พ.ศ. 2556

Sharks: The Ocean’s Most Important Predator
            You might think Sharks are very dangerous monsters in the ocean. You might think that if you’re diving in the ocean and then sharks appear, you will get killed. Those opinions are very far from what sharks really are! Now, we will tell you about sharks and your mind will be changed!
            First, we’ll begin with the general information of shark species. Sharks have lived in the oceans for more than 450 million years! That was before the biggest living things ever, Dinosaurs, appeared on our world. There’re about 360 types of sharks in the world! And all of them are completely different from each other. The smallest shark is dwarf-dog shark which is only 6-inch long. Meanwhile, the biggest shark in the world is whale shark which is 60-foot long! But, the whale shark is not dangerous for us because it eats only plants and small living things in the sea. Sharks have a very good sense. They can sense the rotten fish or blood in the water. Moreover, they can hear and tell the direction of underwater sounds that occurred about 2 kilometers far away.
            Sharks play an important role as they help cleaning the ocean by eating dead and dying fish. Although they’re that important, sharks get killed over 100 million a year, only for food and their fins. Many up-scale restaurants in China have a shark fins soup in their menus. Some of them were killed because of sport. Sharks can be easily over killed because it took 10-15 years to begin reproducing and when they’re produced, it’s just a few numbers.
            Next, you’ve already know that even whale sharks are harmless to us. However, most people don’t know about that because of movies and novels. Sharks rarely kill or even hurt us. Only 100 people were hurt by them and only 25 get killed by sharks worldwide! The chances of getting killed by these predators are because they think we are sea lions swimming in the surface of water. The statistic shows that there a chance of 1 in 100 million to get killed by normal sharks! And the chance of getting killed while driving a car is thousand times higher than killed by sharks! Do you still think that sharks are a human-eater?
            Beside 2 above interesting things about sharks, there is one more thing that very important for humans and we’re about to tell you.
            Sharks can help prolong our lives. Many scientists discovered that most of them never get a cancer or an eye cataract. It’s so amazing if compared to us. Moreover, when they injured, their wounds never get infected and can recover so fast. So, many of scientist are researching about how to get something from sharks’ body like an extracted chemical of something in their blood that help them become so healthy. Researches told that chemicals extracted from Sharks’ cartilage can kill the cancer tumors in lab animals. If the day that we discovered those keys that help sharks so healthy, we can use them to prolong our lives.

            Now, you can see that sharks are not a monster at all. They are so important to the sea’s ecosystem. They can help us to cure those deceases in the near future also. As there’re many people eating sharks, I hope that you will not be one of them after getting these knowledge about sharks from us. So, go out there and tell people to stop harming sharks because they’re so important to us! Stop those stupid people from killing sharks that much every year!  Thank you.

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