The amazing shark is a kind of fish with a cartilaginous skeleton, five to seven gill slits, dermal denticles, and rows of teeth. Many sharks also have pores known as Ampullae of Lorenzini, which enable them to the electromagnetic fields by moving organisms. Most sharks are , though the largest sharks, the Whale Shark and Basking Shark, are primarily feeders much like whales. Some of shark have life spans, including the Whale Shark, which may live up to 180 years. Although sharks can be scary to people, attacks are actually , though some sharks like the Bull Shark will attack a human that gets to close to its territory.