Attack No. 6: The Bobbit’s mistake. Clearly, Arndt had injured the worm — but he also knew Bobbit worms are capable of regenerating; plus, it still had his head. So for the next few days, he kept ...

Sand strikers — also known as bobbit worms — reach up to 10 feet long. They have razor-sharp jaws they use to catch unsuspecting fish and can split into bits to regenerate.