Science & Nature: There Are About 500 Different Kinds Of Cone Snails Around The World. All Have A Sharp, Modified Tooth That Stabs Prey With Venom Like A Harpoon. Most Cone Snails Hunt Worms And Other Snails, But Some Eat Fish. These Are The Ones Most Dangerous To People. The Nerve Toxin That Stops A Fish Is Powerful Enough To Also Kill A