The Sharks by Gu XinZhi, Nanjing Arts Institute

The shark is the most ferocious fish in the ocean. The shark existed on the earth three hundred million years before the advent of the dinosaurs, but we did not know that there were many different species of sharks, and there was a huge gap of 18cm to 18 meters in length. My information chart showed the shark's head 25 species of shark species, people a better understanding of sharks.