10 of the World’s Scariest Sharks

10 of the World’s Scariest Sharks.. Generally, most people would describe a shark as a huge, fierce carnivorous fish with very sharp teeth. However, this is just a generic description which cannot include all the 370 different kinds of sharks whose sizes differ a lot. The largest of all is the whale shark (forty feet long) whereas the smallest is the spined pygmy shark (six inches).