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Sharks are another vertebrate that are similar to dolphins in many ways and very different from dolphins in other ways. There are more that 250 species of sharks, ranging from the harmless whale shark to the ferocious great white.
The great white shark, known as Carchardon Carcharias, feeds regularly on marine mammals, such as seals, sea lions, otters, dolphins, and whales. They enjoy eating bottle-nosed dolphins whenever they get an opportunity. Samuel Gruber in Discovering Sharks writes that the great white consumes marine mammals when they come across a deceased one. The Great White shark, also known as the white death, is considered the most dangerous shark in the waters. The Great White has a conical instead of a flattened snout, black eyes, and large, serrated, arrowhead-shaped teeth. The upper and lower lobes of the tail are almost equal in size, and the body is blue or brown-gray, not white, except on its belly. The Great White is found in temperate waters throughout the world's oceans, and it is important, though not common, predator in California.
Upon viewing these two animals at the zoo, I found them to be very similar in many ways. They both live in the ocean, both had long grey bodies and propelled through the water like a torpedo. The were very big fish...
However, the sharks appeared to be mean and mad. Whereas the dolphins appeared to be happy and full of life. They swam, jump and entertained the onlookers. These two salt water fish were very similar in many physical ways, yet very different in their movement, their habitat, their diet, and their way of life.
In conclusion, the bottle-nosed dolphin and the great white shark are two vertebrae that live in the depths of the ocean. They both are very large fish that use their backbones to propel themselves through the water, to support their long, heavy bodies, and to support their fins. Both the bottle-nosed dolphin and the great white shark like to eat fish and other marine life. On the other hand, the bottle-nosed dolphin and the great white shark also have several characteristics that are different. For example, the shark has larger teeth and can go many days without food or water. Dolphins have smaller teeth and do not like to go hungry. Both vertebrates are amazing creatures.
References
The Great White Shark. Retrieved December 8, 2006 at http://www.ucmp.berkeley.edu/vertebrates/Doug/shark.html
Bottlenose Dolphins. Retrieved December 8, 2006 at http://www.seaworld.org/infobooks/Bottlenose/home.html.
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