Different Types of Sharks INTRODUCTION Although sharks belong to the class Chondrichtyes, there ar many different types. Sharks arose about 350 jillion geezerhood ago and adjudge remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is musical make-up 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 give 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(prenominal) as a porbeagle. However many people do not realize the sheer diversity in the limit of sharks, or that rays are really sharks. Seldom does such an backup organism inspire such a variety of emotions reflecting a premix of fascination, awe and fear. Sharks have occasionally exacted a execrable legal injury from humans who have trespassed...If you want to master a beat essay, order it on our website: OrderEssay.net
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