Abstract: The world population and together problems especially the health problems are increase in every day. Cancer come a cross as one of the main important and uncured problem. A lot of countries including many developed countries such as USA release huge amounts of money towards cancer- related searches, aiming to find an effective treatment against to this problem. Every day brings new idea and solutions in finding the cure. In this study sharks, with a possible treatment link between shark and cancer mechanism, were presented as one of new source in the reality of unrecorded any cancer cases in the sharks up to know.