Essays on Different Types Of Sharks

Different Types of Sharks INTRODUCTION Although sharks belong to the class Chondrichtyes, there ar many different types. Sharks arose about 350 jillion years ago and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is musical theme that sharks almost certainly evolved from placoderms, a group of primitive jawed fishes. It took a long series of successful and unsuccessful mutations with fin, jaw positions etc to divide us all the different designs of sharks around today.

When asked to draw a shark, most people would draw a run along the lines of the whaler shark family, tigers or a mackeral shark such as a porbeagle. However many people do not realize the sheer diversity in the shape of sharks, or that rays are really sharks. Seldom does such an living organism inspire such a variety of emotions reflecting a premix of fascination, awe and fear. Sharks have occasionally exacted a terrible legal injury from humans who have trespassed...If you want to get a beat essay, order it on our website: Orderessay

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