8. Hammerhead Shark
Species: Sphyrna spp.
Total number of attacks: 17
We are continuing our list of most aggressive sharks in the world with Hammerhead sharks that are perhaps the easiest to recognize by a layman because of the unique shape of their head. It extends into a flattened structure that resembles a hammer, making it different from any other species of sharks. One would think that the shark with a hammer for a head would succeed in killing every human it gets its fins on, but surprisingly, like the spinner shark, none of its attacks were fatal.