There is no way to accurately count the number of remaining sharks as there are more than 400 known species of shark spread out all around the world. However, what researchers do know is that an estimated 100 million sharks are killed each year which exceeds what the different species need to recover.
That estimate is rather conservative. Researchers at Dalhousie University in Halifax, Nova Scotia in Canada, believes the number of shark deaths per year could be as high as 273 million. Countries have the authority to regulate around their coastline, but it does little good when fishermen go out beyond coastlines. The Conference on International Trade of Endangered Species is considering protection for sharks.